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Nakajima Y, Kitayama A, Ohta Y, Motooka N, Kuno-Mizumura M, Miyachi M, Tanaka S, Ishikawa-Takata K, Tripette J. Objective Assessment of Physical Activity at Home Using a Novel Floor-Vibration Monitoring System: Validation and Comparison With Wearable Activity Trackers and Indirect Calorimetry Measurements. JMIR Form Res 2024; 8:e51874. [PMID: 38662415 PMCID: PMC11082727 DOI: 10.2196/51874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 12/24/2023] [Accepted: 01/03/2024] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND The self-monitoring of physical activity is an effective strategy for promoting active lifestyles. However, accurately assessing physical activity remains challenging in certain situations. This study evaluates a novel floor-vibration monitoring system to quantify housework-related physical activity. OBJECTIVE This study aims to assess the validity of step-count and physical behavior intensity predictions of a novel floor-vibration monitoring system in comparison with the actual number of steps and indirect calorimetry measurements. The accuracy of the predictions is also compared with that of research-grade devices (ActiGraph GT9X). METHODS The Ocha-House, located in Tokyo, serves as an independent experimental facility equipped with high-sensitivity accelerometers installed on the floor to monitor vibrations. Dedicated data processing software was developed to analyze floor-vibration signals and calculate 3 quantitative indices: floor-vibration quantity, step count, and moving distance. In total, 10 participants performed 4 different housework-related activities, wearing ActiGraph GT9X monitors on both the waist and wrist for 6 minutes each. Concurrently, floor-vibration data were collected, and the energy expenditure was measured using the Douglas bag method to determine the actual intensity of activities. RESULTS Significant correlations (P<.001) were found between the quantity of floor vibrations, the estimated step count, the estimated moving distance, and the actual activity intensities. The step-count parameter extracted from the floor-vibration signal emerged as the most robust predictor (r2=0.82; P<.001). Multiple regression models incorporating several floor-vibration-extracted parameters showed a strong association with actual activity intensities (r2=0.88; P<.001). Both the step-count and intensity predictions made by the floor-vibration monitoring system exhibited greater accuracy than those of the ActiGraph monitor. CONCLUSIONS Floor-vibration monitoring systems seem able to produce valid quantitative assessments of physical activity for selected housework-related activities. In the future, connected smart home systems that integrate this type of technology could be used to perform continuous and accurate evaluations of physical behaviors throughout the day.
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Affiliation(s)
- Yuki Nakajima
- Department of Human-Environmental Sciences, Ochanomizu University, Bunkyo, Japan
| | - Asami Kitayama
- Department of Human-Environmental Sciences, Ochanomizu University, Bunkyo, Japan
| | - Yuji Ohta
- Department of Human-Environmental Sciences, Ochanomizu University, Bunkyo, Japan
| | - Nobuhisa Motooka
- Department of Human-Environmental Sciences, Ochanomizu University, Bunkyo, Japan
| | | | - Motohiko Miyachi
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Settsu, Japan
| | - Shigeho Tanaka
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Settsu, Japan
- Faculty of Nutrition, Kagawa Nutrition University, Sakado, Japan
| | - Kazuko Ishikawa-Takata
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Settsu, Japan
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Setagaya, Japan
| | - Julien Tripette
- Department of Human-Environmental Sciences, Ochanomizu University, Bunkyo, Japan
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Settsu, Japan
- Center for Interdisciplinary AI and Data Science, Ochanomizu University, Bunkyo, Japan
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Suau Q, Bianchini E, Bellier A, Chardon M, Milane T, Hansen C, Vuillerme N. Current Knowledge about ActiGraph GT9X Link Activity Monitor Accuracy and Validity in Measuring Steps and Energy Expenditure: A Systematic Review. SENSORS (BASEL, SWITZERLAND) 2024; 24:825. [PMID: 38339541 PMCID: PMC10857518 DOI: 10.3390/s24030825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024]
Abstract
Over recent decades, wearable inertial sensors have become popular means to quantify physical activity and mobility. However, research assessing measurement accuracy and precision is required, especially before using device-based measures as outcomes in trials. The GT9X Link is a recent activity monitor available from ActiGraph, recognized as a "gold standard" and previously used as a criterion measure to assess the validity of various consumer-based activity monitors. However, the validity of the ActiGraph GT9X Link is not fully elucidated. A systematic review was undertaken to synthesize the current evidence for the criterion validity of the ActiGraph GT9X Link in measuring steps and energy expenditure. This review followed the PRISMA guidelines and eight studies were included with a combined sample size of 558 participants. We found that (1) the ActiGraph GT9X Link generally underestimates steps; (2) the validity and accuracy of the device in measuring steps seem to be influenced by gait speed, device placement, filtering process, and monitoring conditions; and (3) there is a lack of evidence regarding the accuracy of step counting in free-living conditions and regarding energy expenditure estimation. Given the limited number of included studies and their heterogeneity, the present review emphasizes the need for further validation studies of the ActiGraph GT9X Link in various populations and in both controlled and free-living settings.
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Affiliation(s)
- Quentin Suau
- AGEIS, Université Grenoble Alpes, 38000 Grenoble, France; (Q.S.); (A.B.); (M.C.); (T.M.); (C.H.)
| | - Edoardo Bianchini
- AGEIS, Université Grenoble Alpes, 38000 Grenoble, France; (Q.S.); (A.B.); (M.C.); (T.M.); (C.H.)
- Department of Neuroscience, Mental Health and Sensory Organs (NESMOS), Sapienza University of Rome, 00189 Rome, Italy
| | - Alexandre Bellier
- AGEIS, Université Grenoble Alpes, 38000 Grenoble, France; (Q.S.); (A.B.); (M.C.); (T.M.); (C.H.)
- CHU Grenoble Alpes, Université Grenoble Alpes, Inserm CIC 1406, 38000 Grenoble, France
| | - Matthias Chardon
- AGEIS, Université Grenoble Alpes, 38000 Grenoble, France; (Q.S.); (A.B.); (M.C.); (T.M.); (C.H.)
- UNESP Human Movement Research Laboratory (MOVI-LAB), Department of Physical Education, Bauru Sao Paulo State University, Bauru 17033-360, SP, Brazil
| | - Tracy Milane
- AGEIS, Université Grenoble Alpes, 38000 Grenoble, France; (Q.S.); (A.B.); (M.C.); (T.M.); (C.H.)
| | - Clint Hansen
- AGEIS, Université Grenoble Alpes, 38000 Grenoble, France; (Q.S.); (A.B.); (M.C.); (T.M.); (C.H.)
- Department of Neurology, Kiel University, 24105 Kiel, Germany
| | - Nicolas Vuillerme
- AGEIS, Université Grenoble Alpes, 38000 Grenoble, France; (Q.S.); (A.B.); (M.C.); (T.M.); (C.H.)
- LabCom Telecom4Health, Orange Labs & Université Grenoble Alpes, CNRS, Inria, Grenoble INP-UGA, 38000 Grenoble, France
- Institut Universitaire de France, 75005 Paris, France
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Antão J, Rebelo P, Almeida S, Franssen FME, Spruit MA, Marques A. Effects of ActiGraph's filter, epoch length and non-wearing time algorithm on step counts in people with COPD. J Sports Sci 2024; 42:9-16. [PMID: 38394032 DOI: 10.1080/02640414.2024.2319448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
The influence of the ActiGraph® processing criteria on estimating step counts in chronic obstructive pulmonary disease (COPD) remains uncertain. This study aimed to assess the influence of filters, epoch lengths and non-wearing time (NWT) algorithms on steps/day in people with COPD. ActiGraph GT3X+ was worn on the waist for seven days. Steps were detected using different filters (normal and low-frequency extension [LFE]), epoch lengths (15s and 60s), and NWT algorithms (Choi and Troiano). Linear mixed-effects model was applied to assess the effects of filter, epoch length, NWT algorithm on steps/day. Lin's concordance correlation and Bland-Altman were used to measure agreement. A total of 136 people with COPD (107 male; 69 ± 8 years; FEV1 51 ± 17% predicted) were included. Significant differences were found between filters (p < 0.001), but not between epoch lengths or NWT algorithms. The LFE increased, on average, approximately 7500 steps/day compared to the normal filter (p < 0.001). Agreement was poor (<0.3) and proportional bias was significant when comparing steps/day computed with different filters, regardless of the epoch length and NWT algorithm. Filter choice but not epoch lengths or NWT algorithms seem to impact measurement of steps/day. Future studies are needed to recommend the most accurate technique for measuring steps/day in people with COPD.
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Affiliation(s)
- Joana Antão
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal
- iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
- Department of Research and Development, Horn, Ciro, The Netherlands
- Department of Respiratory Medicine, Maastricht University Medical Centre, NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Patrícia Rebelo
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal
- iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Sara Almeida
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal
- iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Frits M E Franssen
- Department of Research and Development, Horn, Ciro, The Netherlands
- Department of Respiratory Medicine, Maastricht University Medical Centre, NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Martijn A Spruit
- Department of Research and Development, Horn, Ciro, The Netherlands
- Department of Respiratory Medicine, Maastricht University Medical Centre, NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | - Alda Marques
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal
- iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
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Toth L, Paluch AE, Bassett DR, Rees-Punia E, Eberl EM, Park S, Evenson KR. Comparative Analysis of ActiGraph Step Counting Methods in Adults: A Systematic Literature Review and Meta-Analysis. Med Sci Sports Exerc 2024; 56:53-62. [PMID: 37703308 DOI: 10.1249/mss.0000000000003282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
PURPOSE The primary aim of this study was to compare steps per day across ActiGraph models, wear locations, and filtering methods. A secondary aim was to compare ActiGraph steps per day to those estimated by the ankle-worn StepWatch. METHODS We conducted a systematic literature review to identify studies of adults published before May 12, 2022, that compared free-living steps per day of ActiGraph step counting methods and studies that compared ActiGraph to StepWatch. Random-effects meta-analysis compared ActiGraph models, wear locations, filter mechanisms, and ActiGraph to StepWatch steps per day. A sensitivity analysis of wear location by younger and older age was included. RESULTS Twelve studies, with 46 comparisons, were identified. When worn on the hip, the AM-7164 recorded 123% of the GT series steps (no low-frequency extension (no LFE) or default filter). However, the AM-7164 recorded 72% of the GT series steps when the LFE was enabled. Independent of the filter used (i.e., LFE, no LFE), ActiGraph GT series monitors captured more steps on the wrist than on the hip, especially among older adults. Enabling the LFE on the GT series monitors consistently recorded more steps, regardless of wear location. When using the default filter (no LFE), ActiGraph recorded fewer steps than StepWatch (ActiGraph on hip 73% and ActiGraph on wrist 97% of StepWatch steps). When LFE was enabled, ActiGraph recorded more steps than StepWatch (ActiGraph on the hip, 132%; ActiGraph on the wrist, 178% of StepWatch steps). CONCLUSIONS The choice of ActiGraph model, wear location, and filter all impacted steps per day in adults. These can markedly alter the steps recorded compared with a criterion method (StepWatch). This review provides critical insights for comparing studies using different ActiGraph step counting methods.
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Affiliation(s)
- Lindsay Toth
- Department of Clinical and Applied Movement Sciences, University of North Florida, Jacksonville, FL
| | - Amanda E Paluch
- Department of Kinesiology and Institute for Applied Life Sciences, University of Massachusetts Amherst, Amherst, MA
| | - David R Bassett
- Department of Kinesiology, Recreation, and Sport Studies (Emeritus), The University of Tennessee, Knoxville, TN
| | - Erika Rees-Punia
- Department of Population Science, American Cancer Society, Atlanta, GA
| | - Eric M Eberl
- Center for Innovation in Digital HealthCare, Health Data Initiative, Massachusetts General Hospital, Boston, MA
| | - Susan Park
- Department of Biostatistics & Epidemiology, University of Massachusetts, Amherst, MA
| | - Kelly R Evenson
- Gillings School of Global Public Health, Department of Epidemiology, University of NC-Chapel Hill, Chapel Hill, NC
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Iwakura M, Kawagoshi A, Tamaki A, Oki Y, Oshima Y, Spruit MA. Physical activity measurements in individuals with interstitial lung disease: a systematic review and meta-analysis. Eur Respir Rev 2023; 32:220165. [PMID: 37437911 DOI: 10.1183/16000617.0165-2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 04/11/2023] [Indexed: 07/14/2023] Open
Abstract
BACKGROUND Physical activity (PA) measurements are becoming common in interstitial lung disease (ILD); however, standardisation has not been achieved. We aimed to systematically review PA measurement methods, present PA levels and provide practical recommendations on PA measurement in ILD. METHODS We searched four databases up to November 2022 for studies assessing PA in ILD. We collected information about the studies and participants, the methods used to measure PA, and the PA metrics. Studies were scored using 12 items regarding PA measurements to evaluate the reporting quality of activity monitor use. RESULTS In 40 of the included studies, PA was measured using various devices or questionnaires with numerous metrics. Of the 33 studies that utilised activity monitors, a median of five out of 12 items were not reported, with the definition of nonwear time being the most frequently omitted. The meta-analyses showed that the pooled means (95% CI) of steps, time spent in moderate to vigorous PA, total energy expenditure and sedentary time were 5215 (4640-5791) steps·day-1, 82 (58-106) min·day-1, 2130 (1847-2412) kcal·day-1 and 605 (323-887) min·day-1, respectively, with considerable heterogeneity. CONCLUSION The use of activity monitors and questionnaires in ILD lacks consistency. Improvement is required in the reporting quality of PA measurement methods using activity monitors.
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Affiliation(s)
- Masahiro Iwakura
- Department of Rehabilitation, Akita City Hospital, Akita City, Japan
| | | | - Akira Tamaki
- School of Rehabilitation, Hyogo Medical University, Hyogo, Japan
| | - Yutaro Oki
- Department of Public Health, Kobe University Graduate School of Health Sciences, Hyogo, Japan
| | - Yohei Oshima
- Rehabilitation Unit, Kyoto University Hospital, Kyoto, Japan
| | - Martijn A Spruit
- Department of Research and Development, CIRO, Horn, The Netherlands
- Department of Respiratory Medicine, Maastricht University Medical Centre (MUMC+) NUTRIM School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
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Shiwani MA, Chico TJA, Ciravegna F, Mihaylova L. Continuous Monitoring of Health and Mobility Indicators in Patients with Cardiovascular Disease: A Review of Recent Technologies. SENSORS (BASEL, SWITZERLAND) 2023; 23:5752. [PMID: 37420916 DOI: 10.3390/s23125752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 06/01/2023] [Accepted: 06/12/2023] [Indexed: 07/09/2023]
Abstract
Cardiovascular diseases kill 18 million people each year. Currently, a patient's health is assessed only during clinical visits, which are often infrequent and provide little information on the person's health during daily life. Advances in mobile health technologies have allowed for the continuous monitoring of indicators of health and mobility during daily life by wearable and other devices. The ability to obtain such longitudinal, clinically relevant measurements could enhance the prevention, detection and treatment of cardiovascular diseases. This review discusses the advantages and disadvantages of various methods for monitoring patients with cardiovascular disease during daily life using wearable devices. We specifically discuss three distinct monitoring domains: physical activity monitoring, indoor home monitoring and physiological parameter monitoring.
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Affiliation(s)
- Muhammad Ali Shiwani
- Department of Automatic Control and Systems Engineering, The University of Sheffield, Sheffield S1 3JD, UK
| | - Timothy J A Chico
- Department of Infection, Immunity and Cardiovascular Disease, The Medical School, The University of Sheffield, Sheffield S10 2RX, UK
| | - Fabio Ciravegna
- Dipartimento di Informatica, Università di Torino, 10124 Turin, Italy
| | - Lyudmila Mihaylova
- Department of Automatic Control and Systems Engineering, The University of Sheffield, Sheffield S1 3JD, UK
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Schoenfelder A, Metcalf B, Langford J, Stathi A, Western MJ, Hillsdon M. The Analytical and Clinical Validity of the pfSTEP Digital Biomarker of the Susceptibility/Risk of Declining Physical Function in Community-Dwelling Older Adults. SENSORS (BASEL, SWITZERLAND) 2023; 23:5122. [PMID: 37299849 PMCID: PMC10255880 DOI: 10.3390/s23115122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Measures of stepping volume and rate are common outputs from wearable devices, such as accelerometers. It has been proposed that biomedical technologies, including accelerometers and their algorithms, should undergo rigorous verification as well as analytical and clinical validation to demonstrate that they are fit for purpose. The aim of this study was to use the V3 framework to assess the analytical and clinical validity of a wrist-worn measurement system of stepping volume and rate, formed by the GENEActiv accelerometer and GENEAcount step counting algorithm. The analytical validity was assessed by measuring the level of agreement between the wrist-worn system and a thigh-worn system (activPAL), the reference measure. The clinical validity was assessed by establishing the prospective association between the changes in stepping volume and rate with changes in physical function (SPPB score). The agreement of the thigh-worn reference system and the wrist-worn system was excellent for total daily steps (CCC = 0.88, 95% CI 0.83-0.91) and moderate for walking steps and faster-paced walking steps (CCC = 0.61, 95% CI 0.53-0.68 and 0.55, 95% CI 0.46-0.64, respectively). A higher number of total steps and faster paced-walking steps was consistently associated with better physical function. After 24 months, an increase of 1000 daily faster-paced walking steps was associated with a clinically meaningful increase in physical function (0.53 SPPB score, 95% CI 0.32-0.74). We have validated a digital susceptibility/risk biomarker-pfSTEP-that identifies an associated risk of low physical function in community-dwelling older adults using a wrist-worn accelerometer and its accompanying open-source step counting algorithm.
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Affiliation(s)
| | - Brad Metcalf
- Sports and Health Sciences, University of Exeter, Exeter EX1 2LU, UK; (B.M.); (J.L.)
| | - Joss Langford
- Sports and Health Sciences, University of Exeter, Exeter EX1 2LU, UK; (B.M.); (J.L.)
- Activinsights Ltd., Huntingdon PE28 0NJ, UK
| | - Afroditi Stathi
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK;
| | - Max J. Western
- Department of Health, University of Bath, Bath BA2 7AY, UK;
| | - Melvyn Hillsdon
- Sports and Health Sciences, University of Exeter, Exeter EX1 2LU, UK; (B.M.); (J.L.)
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Shah VV, Brumbach BH, Pearson S, Vasilyev P, King E, Carlson-Kuhta P, Mancini M, Horak FB, Sowalsky K, McNames J, El-Gohary M. Opal Actigraphy (Activity and Sleep) Measures Compared to ActiGraph: A Validation Study. SENSORS (BASEL, SWITZERLAND) 2023; 23:2296. [PMID: 36850896 PMCID: PMC10003936 DOI: 10.3390/s23042296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/07/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Physical activity and sleep monitoring in daily life provide vital information to track health status and physical fitness. The aim of this study was to establish concurrent validity for the new Opal Actigraphy solution in relation to the widely used ActiGraph GT9X for measuring physical activity from accelerometry epic counts (sedentary to vigorous levels) and sleep periods in daily life. Twenty participants (age 56 + 22 years) wore two wearable devices on each wrist for 7 days and nights, recording 3-D accelerations at 30 Hz. Bland-Altman plots and intraclass correlation coefficients (ICCs) assessed validity (agreement) and test-retest reliability between ActiGraph and Opal Actigraphy sleep durations and activity levels, as well as between the two different versions of the ActiGraph. ICCs showed excellent reliability for physical activity measures and moderate-to-excellent reliability for sleep measures between Opal versus Actigraph GT9X and between GT3X versus GT9X. Bland-Altman plots and mean absolute percentage error (MAPE) also show a comparable performance (within 10%) between Opal and ActiGraph and between the two ActiGraph monitors across activity and sleep measures. In conclusion, physical activity and sleep measures using Opal Actigraphy demonstrate performance comparable to that of ActiGraph, supporting concurrent validation. Opal Actigraphy can be used to quantify activity and monitor sleep patterns in research and clinical studies.
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Affiliation(s)
- Vrutangkumar V. Shah
- Department of Neurology, Oregon Health & Science University, Portland, OR 97239, USA
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
| | - Barbara H. Brumbach
- OHSU-PSU School of Public Health, Oregon Health & Science University, Portland, OR 97201, USA
| | - Sean Pearson
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
| | - Paul Vasilyev
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
| | - Edward King
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
| | | | - Martina Mancini
- Department of Neurology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Fay B. Horak
- Department of Neurology, Oregon Health & Science University, Portland, OR 97239, USA
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
| | - Kristen Sowalsky
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
| | - James McNames
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
- Department of Electrical and Computer Engineering, Portland State University, Portland, OR 97207, USA
| | - Mahmoud El-Gohary
- APDM Wearable Technologies-a Clario Company, Portland, OR 97201, USA
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Agreement of Step-Based Metrics From ActiGraph and ActivPAL Accelerometers Worn Concurrently Among Older Adults. JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR 2022; 5:242-251. [PMID: 36816711 PMCID: PMC9934009 DOI: 10.1123/jmpb.2022-0001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose Our study evaluated the agreement of mean daily step counts, peak 1-min cadence, and peak 30-min cadence between the hip-worn ActiGraph GT3X+ accelerometer, using the normal filter (AGN) and the low frequency extension (AGLFE), and the thigh-worn activPAL3 micro (AP) accelerometer among older adults. Methods Nine-hundred and fifty-three older adults (≥65 years) were recruited to wear the ActiGraph device concurrently with the AP for 4-7 days beginning in 2016. Using the AP as the reference measure, device agreement for each step-based metric was assessed using mean differences (AGN - AP and AGLFE - AP), mean absolute percentage error (MAPE), and Pearson and concordance correlation coefficients. Results For AGN - AP, the mean differences and MAPE were: daily steps -1,851 steps/day and 27.2%, peak 1-min cadence -16.2 steps/min and 16.3%, and peak 30-min cadence -17.7 steps/min and 24.0%. Pearson coefficients were .94, .85, and .91 and concordance coefficients were .81, .65, and .73, respectively. For AGLFE - AP, the mean differences and MAPE were: daily steps 4,968 steps/day and 72.7%, peak 1-min cadence -1.4 steps/min and 4.7%, and peak 30-min cadence 1.4 steps/min and 7.0%. Pearson coefficients were .91, .91, and .95 and concordance coefficients were .49, .91, and .94, respectively. Conclusions Compared with estimates from the AP, the AGN underestimated daily step counts by approximately 1,800 steps/day, while the AGLFE overestimated by approximately 5,000 steps/day. However, peak step cadence estimates generated from the AGLFE and AP had high agreement (MAPE ≤ 7.0%). Additional convergent validation studies of step-based metrics from concurrently worn accelerometers are needed for improved understanding of between-device agreement.
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Functional and Symptomatic Clinical Trial Endpoints: The HFC-ARC Scientific Expert Panel. JACC. HEART FAILURE 2022; 10:889-901. [PMID: 36456063 DOI: 10.1016/j.jchf.2022.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/09/2022] [Accepted: 09/18/2022] [Indexed: 11/11/2022]
Abstract
The Heart Failure Academic Research Consortium is a partnership between the Heart Failure Collaboratory (HFC) and the Academic Research Consortium (ARC) composed of patients, academic investigators from the United States and Europe, the U.S. Food and Drug Administration, the National Institutes of Health, payers, and industry. Members discussed the measure, remote capture, and clinical utility of functional and quality-of-life endpoints for use in clinical trials of heart failure and cardiovascular therapeutics, with the goal of improving the efficiency of heart failure and cardiovascular clinical research, evidence generation, and thereby patient quality of life, functional status, and survival. Assessments of patient-reported outcomes and maximal and submaximal exercise tolerance are standardized and validated, but actigraphy remains inconsistent as a potential endpoint. This paper details those discussions and consensus recommendations.
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Del Pozo-Cruz J, Alvarez-Barbosa F, Gallardo-Gomez D, Del Pozo Cruz B. Optimal Number of Steps per Day to Prevent All-Cause Mortality in People With Prediabetes and Diabetes. Diabetes Care 2022; 45:2156-2158. [PMID: 35796565 DOI: 10.2337/dc22-0524] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/07/2022] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We aimed to examine the dose-response associations between the number of steps per day and all-cause mortality among adults with prediabetes and diabetes. RESEARCH DESIGN AND METHODS This prospective study used data from 1,194 U.S. adults with prediabetes and 493 with diabetes for whom accelerometer-derived steps per day could be retrieved. Mortality was ascertained through the National Death Index (February 25, 2019). Splines were used to assess the dose-response associations between steps per day and all-cause mortality. RESULTS Over ∼9 years of follow-up, 200 adults with prediabetes and 138 with diabetes died. Nonlinear associations akin to an L shape were observed. We estimated an optimal dose of ∼10,000 steps per day to reduce the risk of all-cause mortality for both individuals with prediabetes and those with diabetes. CONCLUSIONS Accumulating more steps per day up to ∼10,000 steps per day may lower the risk of all-cause mortality of adults with prediabetes and diabetes.
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Affiliation(s)
- Jesus Del Pozo-Cruz
- Epidemiology of Physical Activity and Fitness Across the Lifespan (EPAFit) Research Group, Faculty of Education, Department of Physical Education and Sports, University of Seville, Seville, Spain
| | - Francisco Alvarez-Barbosa
- Epidemiology of Physical Activity and Fitness Across the Lifespan (EPAFit) Research Group. Department of Physical Activity and Sport, Cardeal Spinola CEU, Seville, Spain
| | - Daniel Gallardo-Gomez
- Epidemiology of Physical Activity and Fitness Across the Lifespan (EPAFit) Research Group, Faculty of Education, Department of Physical Education and Sports, University of Seville, Seville, Spain
| | - Borja Del Pozo Cruz
- Centre for Active and Healthy Ageing, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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Step Count in Patients With Lumbar Spinal Stenosis: Accuracy During Walking and Nonwalking Activities. Spine (Phila Pa 1976) 2022; 47:1203-1211. [PMID: 35867584 DOI: 10.1097/brs.0000000000004385] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 04/19/2022] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN This is a method development and validation study. OBJECTIVES The purpose of this study was to develop and test a method for step detection using accelerometer data in patients with lumbar spinal stenosis (LSS). There are 2 objectives: (1) to describe a method for step detection from accelerations measured at the wrist, hip, lower back, thigh and ankle; (2) to assess the accuracy of the method during walking with and without walking aids and during nonwalking activities. SUMMARY OF BACKGROUND DATA Loss of walking ability is one of the main symptoms of LSS, and there is no validated measure to assess walking activity in daily living in patients with LSS. MATERIALS AND METHODS Thirty patients with LSS performed a standardized movement protocol that included walking with and without walking aids and performing nonwalking activities while wearing accelerometers on five different wear-sites. After the walking tests, a method was designed for optimal step detection and compared with a gold standard of observed step count. RESULTS The method for step detection applied to accelerations from the lower back, hip, thigh, and ankle provided an accurate step counts during continuous walking without walking aids. Accuracy diminished at all wear-sites when walking with walking aids, except the ankle. The wrist provided the most inaccurate step count, and the accelerometers on the thigh and ankle were prone to falsely detecting steps during bicycling. CONCLUSION The ankle-worn accelerometer provided the most accurate step count, but wrongly registered steps during nonwalking activities. The developed step detection method shows potential as a measure of walking activity why further development and testing under free-living conditions should be performed.
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Selected parameters characterizing physical activity behavior in pupils of the second grade of elementary school in the Ústí Region, Czech Republic. ACTA GYMNICA 2022. [DOI: 10.5507/ag.2022.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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14
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Lisee C, Davis-Wilson H, Evans-Pickett A, Horton WZ, Blackburn T, Franz JR, Thoma L, Spang JT, Pietrosimone B. Linking Gait Biomechanics and Daily Steps After ACL Reconstruction. Med Sci Sports Exerc 2022; 54:709-716. [PMID: 35072659 PMCID: PMC9255696 DOI: 10.1249/mss.0000000000002860] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Aberrant biomechanics and altered loading frequency are associated with poor knee joint health in osteoarthritis development. After anterior cruciate ligament reconstruction (ACLR), individuals demonstrate underloading (lesser vertical ground reaction force (vGRF)) with stiffened knee gait biomechanics (lesser knee extension moment (KEM) and knee flexion angle) and take fewer daily steps as early as 6 months after surgery. The purpose of this cross-sectional laboratory study is to compare gait biomechanics throughout stance between individuals 6-12 months after ACLR who take the lowest, moderate, and highest daily steps. METHODS Individuals with primary, unilateral history of ACLR between the ages of 16 and 35 yr were included (n = 36, 47% females; age, 21 ± 5 yr; months since ACLR, 8 ± 2). Barefoot gait biomechanics of vGRF (body weight), KEM (body weight × height), and knee flexion angle during stance were collected and time normalized. Average daily steps were collected via a waist-mounted accelerometer in free-living settings over 7 d. Participants were separated into tertiles based on lowest daily steps (3326-6042 daily steps), moderate (6043-8198 daily steps), and highest (8199-12,680 daily steps). Biomechanical outcomes of the ACLR limb during stance were compared between daily step groups using functional waveform gait analyses. RESULTS There were no significant differences in sex, body mass index, age, or gait speed between daily step groups. Individuals with the lowest daily steps walk with lesser vGRF and lesser KEM during weight acceptance, and lesser knee flexion angle throughout stance in the ACLR limb compared with individuals with highest and moderate daily steps. CONCLUSIONS After ACLR, individuals who take the fewest daily steps also walk with lesser vGRF during weight acceptance and a stiffened knee strategy throughout stance. These results highlight complex interactions between joint loading parameters after ACLR.
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Affiliation(s)
- Caroline Lisee
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
| | - Hope Davis-Wilson
- Department of Physical Medicine and Rehabilitation, University of Colorado, Aurora, CO
| | - Alyssa Evans-Pickett
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
| | - W. Zachary Horton
- Department of Statistics, University of California Santa Cruz, Santa Cruz, California
| | - Troy Blackburn
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
- Department of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Jason R. Franz
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC
| | - Louise Thoma
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
| | - Jeffrey T. Spang
- Department of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Brian Pietrosimone
- MOTION Science Institute, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, NC
- Department of Allied Health Sciences, University of North Carolina at Chapel Hill, NC
- Department of Orthopaedics, University of North Carolina at Chapel Hill, Chapel Hill, NC
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Pollard B, McDonald G, Held F, Engelen L. Stop motion: using high resolution spatiotemporal data to estimate and locate stationary and movement behaviour in an office workplace. ERGONOMICS 2022; 65:675-690. [PMID: 34514965 DOI: 10.1080/00140139.2021.1980115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Prolonged periods of stationary behaviour, a common occurrence in many office workplaces, are linked with a range of physical disorders. Investigating the physical context of this behaviour may be a key to developing effective interventions. This study aimed to estimate and locate the stationary and movement behaviours of office workers (n = 10) by segmenting spatiotemporal data collected over 5 days in an office work-based setting. The segmentation method achieved a balanced accuracy ≥85.5% for observation classification and ≥90% for bout classification when compared to reference data. The results show the workers spent the majority of their time stationary (Mean = 86.4%) and had on average, 28.4 stationary and 25.9 moving bouts per hour. While these findings accord with other studies, the segmented data was also visualised, revealing that the workers were stationary for periods ≥5 min at multiple locations and these locations changed across time. Practitioner Summary: This study applied a data segmentation method to classify stationary and moving behaviours from spatiotemporal data collected in an office workplace. The segmented data revealed not only what behaviours occurred but also their location, duration, and time. Segmenting spatiotemporal data may add valuable physical context to aid workplace research.
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Affiliation(s)
- Brett Pollard
- School of Public Health, Prevention Research Collaboration, Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - Gordon McDonald
- Sydney Informatics Hub, The University of Sydney, Sydney, Australia
| | - Fabian Held
- Office of the Deputy Vice-Chancellor (Education) - Enterprise and Engagement and Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - Lina Engelen
- School of Public Health, Prevention Research Collaboration, Charles Perkins Centre, The University of Sydney, Sydney, Australia
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Mace RA, Popok PJ, Hopkins SW, Fishbein NS, Vranceanu AM. Adaptation and virtual feasibility pilot of a mindfulness-based lifestyle program targeting modifiable dementia risk factors in older adults. Aging Ment Health 2022; 27:695-707. [PMID: 35100922 DOI: 10.1080/13607863.2022.2032600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
OBJECTIVES We developed a group-based program (My Healthy Brain, MHB) to engage older adults at-risk for dementia in healthy lifestyles. We report on a two-part study to adapt MHB by incorporating mindfulness skills, using mobile health technology to monitor and reinforce behaviors, and delivering it via live video. METHODS Participants were older adults (age ≥ 60) with subjective cognitive decline (SCD) and at least one lifestyle risk factor. In Aim 1 (n = 11, 2 groups), we conducted focus groups to obtain qualitative feedback on proposed adaptations. In Aim 2 (n = 10), we conducted a virtual open pilot with exit interviews to explore the feasibility and outcomes of the adapted MHB. RESULTS Thematic analysis revealed: (1) barriers and facilitators to healthy lifestyles, (2) positive impressions of MHB, (3) interest in mindfulness skills, and (4) openness to study technologies. MHB met a-priori feasibility benchmarks and was associated with improvements in cognition, lifestyle (e.g. physical function), and proposed mechanisms (e.g. mindfulness). Exit interviews confirmed high feasibility and satisfaction. CONCLUSION The integration of mindfulness, live video, and mobile health technologies was feasible and promising for improving healthier lifestyles. The results inform the next feasibility RCT of MHB to prepare for efficacy testing. UNLABELLED Supplemental data for this article is available online at http://dx.doi.org/10.1080/13607863.2022.2032600.
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Affiliation(s)
- Ryan A Mace
- Integrated Brain Health Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Paula J Popok
- Integrated Brain Health Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Sarah W Hopkins
- Integrated Brain Health Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Nathan S Fishbein
- Integrated Brain Health Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Ana-Maria Vranceanu
- Integrated Brain Health Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
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Oliveira RAD, Sasaki JE, Ferraz NL, Oliveira ÁRGD, Moraes PHAD, Virtuoso Júnior JS. Validation of the Trackhealth physical activity monitor. REVISTA BRASILEIRA DE CINEANTROPOMETRIA E DESEMPENHO HUMANO 2022. [DOI: 10.1590/1980-0037.2022v24e83854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT This is a quantitative methodological study for the validation of a research instrument. It aimed to validate the data from the TrackHealth accelerometry device. The sample consisted of 30 adult individuals of both sexes selected by convenience who met the inclusion and exclusion criteria. The physical activity monitors used for the research protocol were the ActiGraph® wGT3X-BT triaxial accelerometer and the TrackHealth accelerometer (TH). The activity protocol consisted of 4 (four) activities (walking at 4.8 and 6.4 km h1 and running at 9.7 and 12 km h1) performed in the laboratory, on an Ibramed treadmill, lasting 5 (five) minutes at each stage. A difference was found between the raw acceleration data of the two devices, however the TrackHealth device showed higher sensitivity at speeds of 4.8 and 6.4 km/h, and a high level of agreement (2.7-2.8%) at the initial speeds of the magnitude vectors. However, there is still a need for improvement in the functioning of the device, so that TrackHealth can be commercialized.
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Maczák B, Vadai G, Dér A, Szendi I, Gingl Z. Detailed analysis and comparison of different activity metrics. PLoS One 2021; 16:e0261718. [PMID: 34932595 PMCID: PMC8691611 DOI: 10.1371/journal.pone.0261718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 12/07/2021] [Indexed: 11/18/2022] Open
Abstract
Actigraphic measurements are an important part of research in different disciplines, yet the procedure of determining activity values is unexpectedly not standardized in the literature. Although the measured raw acceleration signal can be diversely processed, and then the activity values can be calculated by different activity calculation methods, the documentations of them are generally incomplete or vary by manufacturer. These numerous activity metrics may require different types of preprocessing of the acceleration signal. For example, digital filtering of the acceleration signals can have various parameters; moreover, both the filter and the activity metrics can also be applied per axis or on the magnitudes of the acceleration vector. Level crossing-based activity metrics also depend on threshold level values, yet the determination of their exact values is unclear as well. Due to the serious inconsistency of determining activity values, we created a detailed and comprehensive comparison of the different available activity calculation procedures because, up to the present, it was lacking in the literature. We assessed the different methods by analysing the triaxial acceleration signals measured during a 10-day movement of 42 subjects. We calculated 148 different activity signals for each subject’s movement using the combinations of various types of preprocessing and 7 different activity metrics applied on both axial and magnitude data. We determined the strength of the linear relationship between the metrics by correlation analysis, while we also examined the effects of the preprocessing steps. Moreover, we established that the standard deviation of the data series can be used as an appropriate, adaptive and generalized threshold level for the level intersection-based metrics. On the basis of these results, our work also serves as a general guide on how to proceed if one wants to determine activity from the raw acceleration data. All of the analysed raw acceleration signals are also publicly available.
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Affiliation(s)
- Bálint Maczák
- Department of Technical Informatics, University of Szeged, Szeged, Hungary
| | - Gergely Vadai
- Department of Technical Informatics, University of Szeged, Szeged, Hungary
- * E-mail:
| | - András Dér
- Institute of Biophysics, Biological Research Centre, Eötvös Loránd Research Network, Szeged, Hungary
| | - István Szendi
- Department of Psychiatry, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
- Psychiatry Unit, Kiskunhalas Semmelweis Hospital University Teaching Hospital, Kiskunhalas, Hungary
| | - Zoltán Gingl
- Department of Technical Informatics, University of Szeged, Szeged, Hungary
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Diniz-Sousa F, Veras L, Boppre G, Devezas V, Santos-Sousa H, Preto J, Machado L, Vilas-Boas JP, Oliveira J, Fonseca H. The effect of bariatric surgery on gravitational loading and its impact on bone mass. Bone 2021; 153:116153. [PMID: 34416407 DOI: 10.1016/j.bone.2021.116153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 07/23/2021] [Accepted: 08/10/2021] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Mechanical unloading associated with weight loss might be one of the main causes for bariatric surgery (BS) induced bone loss. However, no study has tested this hypothesis through objectively measured accelerometry-derived gravitational loading. We aimed to assess how gravitational loading changes following BS and how this correlates with bone mass losses. METHODS Twenty-one patients submitted to gastric bypass were assessed before, 1, 6 and 12 months after BS for areal bone mineral density (BMD), calciotropic hormones, sclerostin, body composition and daily physical activity. Gravitational loading was determined as the sum of ground reaction forces assessed by accelerometer which considered the interaction between weight and daily ambulation. RESULTS Mechanical stimuli promoted through the significant increase in steps number counterbalanced the gravitational loading decreases derived from the significant weight loss after BS. Gravitational loading volume decreased between pre-BS and 1 month post-BS (-2215 kN·d-1; p = .023), but remained stable between 6 and 12 months post-BS, despite decreases on hip (-7.0%; p < .001), femoral neck (-8.8%; p < .001) and lumbar spine (-5.2%; p < .001) BMD. Serum sclerostin increased from pre-BS to 1 month post-BS (+0.118 ng·mL-1; p = .021), returning to pre-BS levels 6 months after surgery. Neither vitamin D nor parathyroid hormone were affected by BS. Weight variation was a predictor of BMD decreases at total hip (R2 = 0.06; p = .026) and femoral neck (R2 = 0.12; p = .022), whereas daily gravitational loading volume was not. Fat and lean mass changes were also predictors of BMD decrease at total hip (R2 = 0.05; p = .031) and femoral neck (R2 = 0.14; p = .010), respectively. CONCLUSION Our findings suggest that gravitational loading only decreased during the first month after surgery remaining stable thereafter, and these changes do not seem to explain BS-induced bone loss. The association between weight and bone loss seems to result from other physiological aspects, fat and lean mass loss, rather than from gravitational loading decrease.
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Affiliation(s)
- Florêncio Diniz-Sousa
- Research Centre in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal.
| | - Lucas Veras
- Research Centre in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Giorjines Boppre
- Research Centre in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Vítor Devezas
- General Surgery Department, São João Medical Center, Porto, Portugal
| | - Hugo Santos-Sousa
- General Surgery Department, São João Medical Center, Porto, Portugal
| | - John Preto
- General Surgery Department, São João Medical Center, Porto, Portugal
| | - Leandro Machado
- Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D), Faculty of Sport, University of Porto, Porto, Portugal; Biomechanics Laboratory (LABIOMEP-UP), University of Porto, Porto, Portugal
| | - João Paulo Vilas-Boas
- Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D), Faculty of Sport, University of Porto, Porto, Portugal; Biomechanics Laboratory (LABIOMEP-UP), University of Porto, Porto, Portugal
| | - José Oliveira
- Research Centre in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Hélder Fonseca
- Research Centre in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
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Step detection and energy expenditure at different speeds by three accelerometers in a controlled environment. Sci Rep 2021; 11:20005. [PMID: 34625578 PMCID: PMC8501125 DOI: 10.1038/s41598-021-97299-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 08/23/2021] [Indexed: 01/02/2023] Open
Abstract
Physical activity (PA) is one of the most efficient ways to prevent obesity and its associated diseases worldwide. In the USA, less than 10% of the adult population were able to meet the PA recommendations when accelerometers were used to assess PA habituation. Accelerometers significantly differ from each other in step recognition and do not reveal raw data. The aim of our study was to compare a novel accelerometer, Sartorio Xelometer, which enables to gather raw data, with existing accelerometers ActiGraph GT3X+ and activPAL in terms of step detection and energy expenditure estimation accuracy. 53 healthy subjects were divided into 2 cohorts (cohort 1 optimization; cohort 2 validation) and wore 3 accelerometers and performed an exercise routine consisting of the following speeds: 1.5, 3, 4.5, 9 and 10.5 km/h (6 km/h for 2nd cohort included). Data from optimization cohort was used to optimize Sartorio step detection algorithm. Actual taken steps were recorded with a video camera and energy expenditure (EE) was measured. To observe the similarity between video and accelerometer step counts, paired samples t test and intraclass correlation were used separately for step counts in different speeds and for total counts as well as EE estimations. In speeds of 1.5, 3, 4.5, 6, 9 and 10.5 km/h mean absolute percentage error (MAPE) % were 8.1, 3.5, 4.3, 4.2, 3.1 and 7.8 for the Xelometer, respectively (after optimization). For ActiGraph GT3X+ the MAPE-% were 96.93 (87.4), 34.69 (23.1), 2.13 (2.3), 1.96 (2.6) and 2.99 (3.8), respectively and for activPAL 6.55 (5.6), 1.59 (0.6), 0.81 (1.1), 10.60 (10.3) and 15.76 (13.8), respectively. Significant intraclass correlations were observed with Xelometer estimates and actual steps in all speeds. Xelometer estimated the EE with a MAPE-% of 30.3, activPAL and ActiGraph GT3X+ with MAPE percentages of 20.5 and 24.3, respectively. The Xelometer is a valid device for assessing step counts at different gait speeds. MAPE is different at different speeds, which is of importance when assessing the PA in obese subjects and elderly. EE estimates of all three devices were found to be inaccurate when compared with indirect calorimetry.
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Porta M, Chiesa M, Fornengo P, Franceschini M, Tricarico L, Mazzeo A, Di Leva A, Bertello S, Clerico A, Oleandri S, Trento M. Detection of real-life activities by a tri-axial accelerometer worn at different body locations: Analysis and interpretation. Diabet Med 2021; 38:e14609. [PMID: 34043833 PMCID: PMC8518063 DOI: 10.1111/dme.14609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 12/31/2022]
Affiliation(s)
- Massimo Porta
- Laboratory of Clinical PedagogyDepartment of Medical SciencesUniversity of TurinTurinItaly
| | | | - Paolo Fornengo
- Laboratory of Clinical PedagogyDepartment of Medical SciencesUniversity of TurinTurinItaly
| | - Marta Franceschini
- Laboratory of Clinical PedagogyDepartment of Medical SciencesUniversity of TurinTurinItaly
| | - Lucia Tricarico
- Laboratory of Clinical PedagogyDepartment of Medical SciencesUniversity of TurinTurinItaly
| | - Aurora Mazzeo
- Laboratory of Clinical PedagogyDepartment of Medical SciencesUniversity of TurinTurinItaly
| | - Anna Di Leva
- Laboratory of Clinical PedagogyDepartment of Medical SciencesUniversity of TurinTurinItaly
| | | | | | | | - Marina Trento
- Laboratory of Clinical PedagogyDepartment of Medical SciencesUniversity of TurinTurinItaly
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Physical Activity and Its Association with Traditional Outcome Measures in Pulmonary Arterial Hypertension. Ann Am Thorac Soc 2021; 19:572-582. [PMID: 34473938 DOI: 10.1513/annalsats.202105-560oc] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Rationale Limitation of physical activity is a common presenting complaint for patients with pulmonary arterial hypertension (PAH). Physical activity is thought to be determined by cardiopulmonary function, yet there are limited data that investigate this relationship. Objective We aimed to study the relationship between right ventricular function and daily activity and its impact on health-related quality of life (HRQoL) in PAH. Methods Baseline data for 55 patients enrolled in PHANTOM, an ongoing multicenter randomized controlled trial of anastrozole in PAH were used. Post-menopausal women and men were eligible and underwent six-minute walk testing, echocardiography and completed HRQoL questionnaires. Each patient wore an accelerometer for 7-days. Multivariable linear regression models were used to study the association between tricuspid annular plane systolic excursion (TAPSE) and vector magnitude counts, and between daily activity and HRQoL. Principal component analysis and K-means clustering were used to identify activity-based phenotypes. K-nearest neighbors' classification was applied to an independent cross-sectional cohort from the University of Pennsylvania. Results The mean age of patients in PHANTOM was 61 years. 67% were women with idiopathic PAH as the most common etiology. A 0.4 cm increase in TAPSE was associated with an increase in daily vector magnitude counts (ß:34000, 95%CI:900-67000, p=0.004) after adjustment for age, sex, body mass index, etiology of PAH and wear time. A 1-standard deviation increase in vector magnitude counts was associated with higher six-minute walk distance (ß: 56.1 meters, 95%CI:28.6-83.7, p<0.001) and lower emPHasis-10 scores (ß:-3.3, 95%CI:0.3-6.4, p=0.03). Three activity phenotypes, low, medium, and high, were identified. The most active phenotype had greater six-minute walk distances (p=0.001) and lower emPHasis-10 scores (p=0.009) after adjustment for age, sex, body mass index, WHO functional class and parenteral prostacyclin use. Phenotypes of physical activity were reproduced in the second cohort and were independently associated with six-minute walk distance. Conclusion Better right ventricular systolic function was associated with increased levels of activity in PAH. Increased daily activity was associated with greater six-minute walk distance and better HRQoL. Distinct activity-based phenotypes may be helpful in risk stratification of PAH patients or provide novel endpoints for clinical trials.
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Agreement Between StepWatch3 and ActiGraph wGT3X+ for Measuring Step-Based Metrics in People With Peripheral Artery Disease. J Aging Phys Act 2021; 30:225-236. [PMID: 34438366 DOI: 10.1123/japa.2020-0499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 04/10/2021] [Accepted: 04/18/2021] [Indexed: 11/18/2022]
Abstract
The authors investigated the agreement between StepWatch3™ (SW3) and ActiGraph™ wGT3X+ monitors for measuring step-based metrics in patients with peripheral artery disease and older adults. In 23 patients with peripheral artery disease and 38 older participants, the authors compared the metrics obtained during an outdoor (400-m track) walking session (step count) and a 7-day free-living period (step count and 60/30/5/1-min maximal or peak step accumulation) using the SW3 (ankle) and the wGT3X+ (hip) with the low-frequency extension filter enabled (wGT3X+/LFE) or not (wGT3X+/N). During outdoor walking session, agreement was high, particularly for wGT3X+/LFE: correlations ≥.98, median absolute percentage errors <1%, and significant equivalence using a ± 15% equivalence zone or narrower. In free living, no wGT3X+ method was equivalent to SW3 for step count. The wGT3X+/LFE was equivalent to SW3 regarding all step accumulation metrics using a ± 20% equivalence zone or narrower, with median absolute percentage errors <11%. The wGT3X+/LFE method is the best option for comparisons with SW3 in peripheral artery disease and older adults.
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YANG XIAOLIN, KULMALA JANNE, HAKONEN HARTO, HIRVENSALO MIRJA, ROVIO SUVIP, PAHKALA KATJA, KUKKO TUOMAS, HUTRI-KÄHÖNEN NINA, RAITAKARI OLLIT, TAMMELIN TUIJAH. Tracking and Changes in Daily Step Counts among Finnish Adults. Med Sci Sports Exerc 2021; 53:1615-1623. [PMID: 34261992 PMCID: PMC8284380 DOI: 10.1249/mss.0000000000002621] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE This study aimed to investigate the tracking and changes of steps per day in adults and their determinants over 13 yr. METHODS A total of 2195 subjects (1236 women) 30-45 yr of age were randomly recruited from the ongoing Cardiovascular Risk in Young Finns Study in 2007 and were followed up in 2020. Steps per day, including both total and aerobic steps per day, were monitored for seven consecutive days with a pedometer in 2007-2008 and 2011-2012 and with an accelerometer in 2018-2020. Tracking was analyzed using Spearman's correlation. Stability and changes of steps per day over time in both low-active and high-active groups (based on median values) were described by percentage agreements, kappa statistics, and logistic regression. Associations of sex, age, and body mass index with the initial number and changes in steps per day were analyzed using linear growth curve modeling. RESULTS Tracking correlations of total steps per day at 4-, 9-, and 13-yr intervals were 0.45-0.66, 0.33-0.70, and 0.29-0.60, while corresponding correlations for aerobic steps per day were 0.28-0.55, 0.23-0.52, and 0.08-0.55, respectively. Percentage agreements were higher than 54%, and kappa statistics ranged from slight to fair over time. Compared with the low-active group, the high-active group at baseline had a higher probability of being active later in adulthood. Female sex and higher age were associated directly with the initial number of steps per day and inversely with changes in the number of steps per day. Body mass index was inversely associated with the initial number of steps per day and changes in the number of total steps per day. CONCLUSION The 13-yr tracking of steps per day in adulthood was found to be low to moderately high. Daily ambulatory activity is essential to maintaining an active lifestyle throughout adulthood. Changes in the amount of adult steps per day vary by sex, age, and BMI.
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Affiliation(s)
- XIAOLIN YANG
- LIKES Research Centre for Physical Activity and Health, Jyväskylä, FINLAND
| | - JANNE KULMALA
- LIKES Research Centre for Physical Activity and Health, Jyväskylä, FINLAND
| | - HARTO HAKONEN
- LIKES Research Centre for Physical Activity and Health, Jyväskylä, FINLAND
| | - MIRJA HIRVENSALO
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, FINLAND
| | - SUVI P. ROVIO
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, FINLAND
- Centre for Population Health Research, University of Turku and Turku University Hospital, FINLAND
| | - KATJA PAHKALA
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, FINLAND
- Centre for Population Health Research, University of Turku and Turku University Hospital, FINLAND
- Paavo Nurmi Centre and Unit for Health and Physical Activity, University of Turku, Turku, FINLAND
| | - TUOMAS KUKKO
- LIKES Research Centre for Physical Activity and Health, Jyväskylä, FINLAND
| | - NINA HUTRI-KÄHÖNEN
- Department of Pediatrics, University of Tampere and Tampere University of Hospital, Tampere, FINLAND
| | - OLLI T. RAITAKARI
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, FINLAND
- Centre for Population Health Research, University of Turku and Turku University Hospital, FINLAND
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, FINLAND
| | - TUIJA H. TAMMELIN
- LIKES Research Centre for Physical Activity and Health, Jyväskylä, FINLAND
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Criterion Validity of iOS and Android Applications to Measure Steps and Distance in Adults. TECHNOLOGIES 2021. [DOI: 10.3390/technologies9030055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The growing popularity of physical activity (PA) applications (apps) in recent years and the vast amounts of data that they generate present attractive possibilities for surveillance. However, measurement accuracy is indispensable when tracking PA variables to provide meaningful measures of PA. The purpose of this study was to examine the steps and distance criterion validity of freeware accelerometer-based PA smartphone apps, during incremental-intensity treadmill walking and jogging. Thirty healthy adults (25.9 ± 5.7 years) participated in this cross-sectional study. They were fitted with two smartphones (one with Android and one with iOS operating systems), each one simultaneously running four different apps (i.e., Runtastic Pedometer, Accupedo, Pacer, and Argus). They walked and jogged for 5 min at each of the predefined speeds of 4.8, 6.0, and 8.4 km/h on a treadmill, and two researchers counted every step taken during trials with a digital tally counter. Validity was evaluated by comparing each app with the criterion measure using repeated-measures analysis of variance (ANOVA), mean absolute percentage errors (MAPEs), and Bland–Altman plots. For step count, Android apps performed slightly more accurately that iOS apps; nevertheless, MAPEs were generally low for all apps (<5%) and accuracy increased at higher speeds. On the other hand, errors were significantly higher for distance estimation (>10%). The findings suggest that accelerometer-based apps are accurate tools for counting steps during treadmill walking and jogging and could be considered suitable for use as an outcome measure within a clinical trial. However, none of the examined apps was suitable for measuring distance.
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Lonini L, Shawen N, Hoppe-Ludwig S, Deems-Dluhy S, Mummidisetty CK, Eisenberg Y, Jayaraman A. Combining Accelerometer and GPS Features to Evaluate Community Mobility in Knee Ankle Foot Orthoses (KAFO) Users. IEEE Trans Neural Syst Rehabil Eng 2021; 29:1386-1393. [PMID: 34252030 PMCID: PMC8363134 DOI: 10.1109/tnsre.2021.3096434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Orthotic and assistive devices such as knee ankle foot orthoses (KAFO), come in a variety of forms and fits, with several levels of available features that could help users perform daily activities more naturally. However, objective data on the actual use of these devices outside of the research lab is usually not obtained. Such data could enhance traditional lab-based outcome measures and inform clinical decision-making when prescribing new orthotic and assistive technology. Here, we link data from a GPS unit and an accelerometer mounted on the orthotic device to quantify its usage in the community and examine the correlations with clinical metrics. We collected data from 14 individuals over a period of 2 months as they used their personal KAFO first, and then a novel research KAFO; for each device we quantified number of steps, cadence, time spent at community locations and time wearing the KAFO at those locations. Sensor-derived metrics showed that mobility patterns differed widely between participants (mean steps: 591.3, SD =704.2). The novel KAFO generally enabled participants to walk faster during clinical tests ( ∆6 Minute-Walk-Test=71.5m, p=0.006). However, some participants wore the novel device less often despite improved performance on these clinical measures, leading to poor correlation between changes in clinical outcome measures and changes in community mobility ( ∆6 Minute-Walk-Test - ∆ Community Steps: r=0.09, p=0.76). Our results suggest that some traditional clinical outcome measures may not be associated with the actual wear time of an assistive device in the community, and obtaining personalized data from real-world use through wearable technology is valuable.
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27
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Liu F, Wanigatunga AA, Schrack JA. Assessment of Physical Activity in Adults using Wrist Accelerometers. Epidemiol Rev 2021; 43:65-93. [PMID: 34215874 DOI: 10.1093/epirev/mxab004] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 05/14/2021] [Accepted: 06/21/2021] [Indexed: 11/12/2022] Open
Abstract
The health benefits of physical activity have been widely recognized, yet traditional measures of physical activity including questionnaires and category-based assessments of volume and intensity provide only broad estimates of daily activities. Accelerometers have advanced epidemiologic research on physical activity by providing objective and continuous measurement of physical activity in free-living conditions. Wrist-worn accelerometers have become especially popular due to low participant burden. However, the validity and reliability of wrist-worn devices for adults have yet to be summarized. Moreover, accelerometer data provide rich information on how physical activity is accumulated throughout the day, but only a small portion of these rich data have been utilized by researchers. Lastly, new methodological developments that aim to overcome some of the limitations of accelerometers are emerging. The purpose of this review is to provide an overview of accelerometry research, with a special focus on wrist-worn accelerometers. We describe briefly how accelerometers work, summarize the validity and reliability of wrist-worn accelerometers, discuss the benefits of accelerometers including measuring light-intensity physical activity, and discuss pattern metrics of daily physical activity recently introduced in the literature. A summary of large-scale cohort studies and randomized trials that implemented wrist-worn accelerometry is provided. We conclude the review by discussing new developments and future directions of research using accelerometers, with a focus on wrist-worn accelerometers.
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Affiliation(s)
- Fangyu Liu
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States.,Center on Aging and Health, Johns Hopkins University, Baltimore, Maryland, United States
| | - Amal A Wanigatunga
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States.,Center on Aging and Health, Johns Hopkins University, Baltimore, Maryland, United States
| | - Jennifer A Schrack
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States.,Center on Aging and Health, Johns Hopkins University, Baltimore, Maryland, United States
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28
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Cederberg KLJ, Jeng B, Sasaki JE, Lai B, Bamman M, Motl RW. Accuracy and precision of wrist-worn actigraphy for measuring steps taken during over-ground and treadmill walking in adults with Parkinson's disease. Parkinsonism Relat Disord 2021; 88:102-107. [PMID: 34171566 DOI: 10.1016/j.parkreldis.2021.06.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Step counts represent a straight-forward method of measuring physical activity in adults with Parkinson's disease (PD). The present study examined the absolute and relative accuracy and precision of a wrist-worn research-grade accelerometer (i.e., ActiGraph GT3X+) for measuring step counts during over-ground and treadmill walking in adults with PD and controls without PD. METHODS Participants (PD: n = 29; controls: n = 31) wore two ActiGraph GT3X + accelerometers, one on each wrist, and completed an over-ground walking bout followed by a treadmill walking bout at the same speed. Step counts were measured manually using a hand-held tally counter. Accuracy and precision were based on absolute and relative metrics. RESULTS The ActiGraph GT3X + underestimated step counts in both participants with PD (4.7-11% error) and controls without PD (8.8-17% error), with a greater discrepancy in controls. The ActiGraph GT3X + provided more accurate and precise estimates of step counts when placed on the more affected wrist and non-dominant wrist for participants with PD and controls, respectively, and was more accurate and precise during over-ground walking compared with treadmill walking for both groups. CONCLUSIONS Our results suggest that placement of the device (i.e., dominant vs. non-dominant), type of activity (i.e., over-ground vs. treadmill walking), and presence of clinical conditions may impact the accuracy and precision of data when using the research-grade ActiGraph GT3X + accelerometer for measuring step counts.
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Affiliation(s)
- Katie L J Cederberg
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA; Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Brenda Jeng
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jeffer E Sasaki
- Department of Sport Sciences, Universidade Federal Do Triângulo Mineiro, Uberaba, MG, Brazil
| | - Byron Lai
- UAB/Lakeshore Foundation Research Collaborative, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Marcas Bamman
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Robert W Motl
- Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL, USA
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Talbot LA, Brede E, Metter EJ. Influence of Self-managed Rehabilitation on Work Efficiency in Active Duty Military With a Knee Injury. Mil Med 2021; 186:486-492. [PMID: 33242071 DOI: 10.1093/milmed/usaa513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 11/07/2020] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Knee injuries associated with intense physical training are one of the most frequent injuries associated with medical encounters for military members. The purpose of this study was to evaluate four approaches to physiotherapy rehabilitation and their effects on work efficiency in active duty military with a knee injury. The four groups included neuromuscular electrical stimulation (NMES), walking with a weighted vest (WALK), combined NMES/Walk, and standard physiotherapy rehabilitation. All groups received standard physiotherapy rehabilitation.We have previously reported that quadriceps muscle strength improved over 18 weeks in the study for the three interventions relative to standard rehabilitation alone. This report presents results from an examination of work efficiency as evaluated during a step test while measuring oxygen utilization. METHODS A randomized controlled trial was conducted, with repeated outcome measures of work efficiency assessed at baseline, 3, 6, 12, and 18 weeks. The sample consisted of 67 active duty service members between the ages of 18 and 50 years with a knee injury. Participants were randomized to one of the four approaches to physiotherapy rehabilitation: (1) NMES was applied to the quadriceps muscle four times per week, for 30 minutes (15 minutes to each leg), consisting of 15 quadriceps muscle contractions per leg; (2) graduated strength walking using a weighted vest (WALK) was for 30 minutes, 3 to 4 days a week; (3) combined NMES with strength walking received both the NMES therapy and the weighted vest walking; and (4) standard physiotherapy consisted of progressive exercise with the number and type of sessions not controlled by the study. All four groups received the standard physiotherapy for a knee injury. The primary outcome was work efficiency, as measured by oxygen utilization during a 2-minute self-paced step test over 18 weeks. The primary analysis used repeated measures, linear mixed-effects models with a random effect for subject. RESULTS Both the number of steps performed and gross work efficiency improved during the study for all three intervention groups. For gross work efficiency, standard rehabilitation improved 12%, WALK showed a 19% improvement, NMES increased by 24%, and the NMES/Walk group improved by 40%. CONCLUSIONS All groups showed improved submaximal exercise efficiency based on oxygen utilization, with the intervention groups showing a greater improvement in work efficiency as compared to standard rehabilitation. Knee injuries can be problematic for active duty members because of reduced mobility leading to deconditioning and associated declines in work efficiency. Rehabilitative programs, including those described in this study, may minimize loss of work efficiency and fitness and promote a quicker recovery.
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Affiliation(s)
- Laura A Talbot
- College of Medicine, University of Tennessee Health Science Center, Department of Neurology, Memphis, TN 38163, USA
| | - Emily Brede
- College of Medicine, University of Tennessee Health Science Center, Department of Neurology, Memphis, TN 38163, USA
| | - E Jeffrey Metter
- College of Medicine, University of Tennessee Health Science Center, Department of Neurology, Memphis, TN 38163, USA
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Validity of Hip and Ankle Worn Actigraph Accelerometers for Measuring Steps as a Function of Gait Speed during Steady State Walking and Continuous Turning. SENSORS 2021; 21:s21093154. [PMID: 34062943 PMCID: PMC8124409 DOI: 10.3390/s21093154] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/29/2021] [Accepted: 04/29/2021] [Indexed: 11/17/2022]
Abstract
This study aimed to investigate the accuracy and reliability of hip and ankle worn Actigraph GT3X+ (AG) accelerometers to measure steps as a function of gait speed. Additionally, the effect of the low frequency extension filter (LFEF) on the step accuracy was determined. Thirty healthy individuals walked straight and walked with continuous turns in different gait speeds. Number of steps were recorded with a hip and ankle worn AG, and with a Stepwatch (SW) activity monitor positioned around the right ankle, which was used as a reference for step count. The percentage agreement, interclass correlation coefficients and Bland–Altmann plots were determined between the AG and the reference SW across gait speeds for the two walking conditions. The ankle worn AG with the default filter was the most sensitive for step detection at >0.6 m/s, whilst accurate step detection for gait speeds < 0.6 m/s were only observed when applying the LFEF. The hip worn AG with the default filter showed poor accuracy (12–78%) at gait speeds < 1.0 m/s whereas the accuracy increased to >87% for gait speeds < 1.0 m/s when applying the LFEF. Ankle worn AG was the most sensitive to measure steps at a vast range of gait speeds. Our results suggest that sensor placement and filter settings need to be taken into account to provide accurate estimates of step counts.
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31
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Pollard B, Engelen L, Held F, de Dear R. Movement at work: A comparison of real time location system, accelerometer and observational data from an office work environment. APPLIED ERGONOMICS 2021; 92:103341. [PMID: 33360879 DOI: 10.1016/j.apergo.2020.103341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/20/2020] [Accepted: 12/11/2020] [Indexed: 06/12/2023]
Abstract
Office workers can spend significant periods of time being stationary whilst at work, with potentially serious health consequences. The development of effective health interventions could be aided by a greater understanding of the location and environmental context in which this stationary behaviour occurs. Real time location systems (RTLS) potentially offer the opportunity to gather this much needed information, but they have not been extensively trialled in office workplaces, nor rigorously compared against more familiar devices such as accelerometers. The aim of this paper was to determine whether an RTLS can measure and spatially locate the non-stationary and stationary behaviours of adults working in an office work environment. Data collected from a series of comparison studies undertaken in a commercial office building suggests that RTLS can measure the velocity at which people are moving and locate them, when stationary, with an accuracy of 0.668 m (SD 0.389). This opens up significant opportunities to further understand how people move within buildings, the indoor physical environmental influences on that movement, and the development of effective interventions to help people to move more whilst at work.
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Affiliation(s)
- Brett Pollard
- School of Public Health, Prevention Research Collaboration and Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Lina Engelen
- School of Public Health, Prevention Research Collaboration and Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Fabian Held
- Office of the Deputy Vice-Chancellor (Education) - Enterprise and Engagement and Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Richard de Dear
- IEQ Lab., School of Architecture, Design and Planning, The University of Sydney, Sydney, NSW, 2006, Australia
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Guimarães RDF, Josaphat KJ, Reid R, Henderson M, Barnett TA, Mathieu ME. Reduction in ambulatory distance from childhood through adolescence: The impact of the number and length of steps. J Exerc Sci Fit 2020; 19:66-70. [PMID: 33312208 PMCID: PMC7721637 DOI: 10.1016/j.jesf.2020.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 08/24/2020] [Accepted: 08/27/2020] [Indexed: 11/28/2022] Open
Abstract
Background The aim of this study was to explore the relationship between ambulatory distance with steps/day and increased step length as children age. Methods This is a prospective cohort study. Forty-five children from the QUALITY cohort were assessed at childhood (baseline) and seven years later during adolescence (follow-up). Daily step count was evaluated by accelerometry, step length by a standardized test, and daily ambulatory distance was calculated based on step count and length. Results Children grew by an average of 0.33 m from childhood to adolescence (p < 0.001). The daily ambulatory distance decreased by an average 3008 m from childhood to adolescence (p < 0.001). Step length increased an average of 0.10 m (p < 0.001) from childhood to adolescence, while the number of steps taken decreased by an average of 5549 steps (childhood to adolescence) (p < 0.001). The change in the number of steps between childhood and adolescence represents 84.6% of the change in the ambulatory distance while the change in step length explained an additional 13.0% Conclusions The decrease in the ambulatory distance from childhood to adolescence was strongly explained by the decrease in step count; however the increase in step length should not to be neglected.
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Affiliation(s)
- Roseane de Fátima Guimarães
- School of Kinesiology and Exercise Sciences, Faculty of Medicine, Université de Montréal, Montreal, Canada.,Sainte-Justine University Hospital Research Center, Montreal, Canada
| | - Kapria-Jad Josaphat
- School of Kinesiology and Exercise Sciences, Faculty of Medicine, Université de Montréal, Montreal, Canada
| | - Ryan Reid
- Human Kinetics Department, St Francis Xavier University, Antigonish, Canada
| | - Mélanie Henderson
- Sainte-Justine University Hospital Research Center, Montreal, Canada.,Department of Pediatrics, Université de Montréal, Montreal, Canada
| | - Tracie Ann Barnett
- Sainte-Justine University Hospital Research Center, Montreal, Canada.,Department of Family Medicine, McGill University, Montreal, Canada
| | - Marie-Eve Mathieu
- School of Kinesiology and Exercise Sciences, Faculty of Medicine, Université de Montréal, Montreal, Canada.,Sainte-Justine University Hospital Research Center, Montreal, Canada
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Pau M, Porta M, Coghe G, Frau J, Lorefice L, Cocco E. Does Multiple Sclerosis Differently Impact Physical Activity in Women and Man? A Quantitative Study Based on Wearable Accelerometers. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E8848. [PMID: 33260721 PMCID: PMC7729610 DOI: 10.3390/ijerph17238848] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/24/2020] [Accepted: 11/26/2020] [Indexed: 02/06/2023]
Abstract
In people with multiple sclerosis (pwMS), fatigue, weakness and spasticity may reduce mobility and promote sedentary behavior. However, little is known about the existence of possible differences in the way MS modifies the propensity to perform physical activity (PA) in men and women. The present study aimed to partly close this gap by means of quantitative analysis carried out using wearable sensors. Forty-five pwMS (23 F, 22 M, mean age 50.3) and 41 unaffected age- and sex-matched individuals wore a tri-axial accelerometer 24 h/day for 7 consecutive days. Raw data were processed to calculate average number of daily steps, vector magnitude (VM) counts, and percentage of time spent in sedentary behavior and in PA of different intensities (i.e., light and moderate-to-vigorous, MVPA). Women with MS spent more time in sedentary behavior and exhibited a reduced amount of light intensity activity with respect to men, while MVPA was similar across sexes. However, in comparison with unaffected individuals, the overall PA patterns appear significantly modified mostly in women who, in presence of the disease, present increased sedentary behavior, reduced MVPA, number of daily steps and VM counts. The findings of the present study highlight the urgency of including sex as variable in all studies on PA in pwMS.
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Affiliation(s)
- Massimiliano Pau
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, 09123 Cagliari, Italy;
| | - Micaela Porta
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, 09123 Cagliari, Italy;
| | - Giancarlo Coghe
- Department of Medical Sciences and Public Health, University of Cagliari, 09123 Cagliari, Italy; (G.C.); (J.F.); (L.L.); (E.C.)
| | - Jessica Frau
- Department of Medical Sciences and Public Health, University of Cagliari, 09123 Cagliari, Italy; (G.C.); (J.F.); (L.L.); (E.C.)
| | - Lorena Lorefice
- Department of Medical Sciences and Public Health, University of Cagliari, 09123 Cagliari, Italy; (G.C.); (J.F.); (L.L.); (E.C.)
| | - Eleonora Cocco
- Department of Medical Sciences and Public Health, University of Cagliari, 09123 Cagliari, Italy; (G.C.); (J.F.); (L.L.); (E.C.)
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Psotka MA, Abraham WT, Fiuzat M, Filippatos G, Lindenfeld J, Ahmad T, Bhatt AS, Carson PE, Cleland JGF, Felker GM, Januzzi JL, Kitzman DW, Leifer ES, Lewis EF, McMurray JJV, Mentz RJ, Solomon SD, Stockbridge N, Teerlink JR, Vaduganathan M, Vardeny O, Whellan DJ, Wittes J, Anker SD, O'Connor CM. Conduct of Clinical Trials in the Era of COVID-19: JACC Scientific Expert Panel. J Am Coll Cardiol 2020; 76:2368-2378. [PMID: 33183511 PMCID: PMC7836888 DOI: 10.1016/j.jacc.2020.09.544] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/12/2020] [Accepted: 09/09/2020] [Indexed: 12/20/2022]
Abstract
The coronavirus disease-2019 (COVID-19) pandemic has profoundly changed clinical care and research, including the conduct of clinical trials, and the clinical research ecosystem will need to adapt to this transformed environment. The Heart Failure Academic Research Consortium is a partnership between the Heart Failure Collaboratory and the Academic Research Consortium, composed of academic investigators from the United States and Europe, patients, the U.S. Food and Drug Administration, the National Institutes of Health, and industry members. A series of meetings were convened to address the challenges caused by the COVID-19 pandemic, review options for maintaining or altering best practices, and establish key recommendations for the conduct and analysis of clinical trials for cardiovascular disease and heart failure. This paper summarizes the discussions and expert consensus recommendations.
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Affiliation(s)
- Mitchell A Psotka
- Inova Heart and Vascular Institute, Falls Church, Virginia. https://twitter.com/mpsotka
| | - William T Abraham
- Division of Cardiovascular Medicine, The Ohio State University, Columbus, Ohio.
| | - Mona Fiuzat
- Duke University Medical Center and Duke Clinical Research Institute, Durham, North Carolina. https://twitter.com/mfiuzat
| | - Gerasimos Filippatos
- University of Cyprus Medical School, Shakolas Educational Center for Clinical Medicine, Nicosia, Cyprus
| | - JoAnn Lindenfeld
- Heart Failure and Transplantation Section, Vanderbilt Heart and Vascular Institute, Nashville, Tennessee
| | - Tariq Ahmad
- Section of Cardiovascular Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Ankeet S Bhatt
- Cardiovascular Division, Brigham and Women's Hospital, Boston, Massachusetts
| | - Peter E Carson
- Department of Cardiology, Washington Veterans Affairs Medical Center, Washington, DC
| | - John G F Cleland
- Robertson Institute of Biostatistics and Clinical Trials Unit, University of Glasgow, Glasgow, United Kingdom
| | - G Michael Felker
- Duke University Medical Center and Duke Clinical Research Institute, Durham, North Carolina
| | - James L Januzzi
- Cardiology Division, Massachusetts General Hospital and Baim Institute for Clinical Research, Boston, Massachusetts
| | - Dalane W Kitzman
- Sections on Cardiovascular Medicine and Geriatrics, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Eric S Leifer
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, Bethesda, Maryland
| | - Eldrin F Lewis
- Division of Cardiovascular Medicine, Stanford University, Palo Alto, California
| | - John J V McMurray
- BHF Cardiovascular Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Robert J Mentz
- Duke University Medical Center and Duke Clinical Research Institute, Durham, North Carolina
| | - Scott D Solomon
- Cardiovascular Division, Brigham and Women's Hospital, Boston, Massachusetts
| | | | - John R Teerlink
- Section of Cardiology, San Francisco Veterans Affairs Medical Center and School of Medicine, University of California-San Francisco, San Francisco, California. https://twitter.com/jteerlinkmd
| | | | - Orly Vardeny
- Pharmacy Practice Division, Minneapolis VA Center for Care Delivery and Outcomes Research and University of Minnesota, Minneapolis, Minnesota
| | - David J Whellan
- Department of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | | | - Stefan D Anker
- Division of Cardiology and Metabolism, Department of Cardiology, Berlin-Brandenburg Center for Regenerative Therapies, German Centre for Cardiovascular Research Partner Site Berlin, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christopher M O'Connor
- Inova Heart and Vascular Institute, Falls Church, Virginia; Duke University Medical Center and Duke Clinical Research Institute, Durham, North Carolina. https://twitter.com/coconnormd
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Lee PH, Tse ACY, Wu CST, Mak YW, Lee U. Temporal association between objectively measured smartphone usage, sleep quality and physical activity among Chinese adolescents and young adults. J Sleep Res 2020; 30:e13213. [PMID: 33049798 DOI: 10.1111/jsr.13213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/04/2020] [Accepted: 09/16/2020] [Indexed: 11/28/2022]
Abstract
We studied the association between objectively measured smartphone usage and objectively measured sleep quality and physical activity for seven consecutive days among Hong Kong adolescents and young adults aged 11-25 years (n = 357, 67% female). We installed an app that tracked the subjects' smartphone usage and had them wear an ActiGraph GT3X accelerometer on their wrist to measure their sleep quality and physical activity level. Smartphone usage data were successfully obtained from 187 participants (52.4%). The participants on average spent 2 h 46 min per day on their smartphone. Multilevel regression showed that 1 min of daytime smartphone usage was associated with 0.07 min decrease in total sleeping time that night (p = .043, 95% confidence interval [CI]: -0.14, -0.003). Broken down for different usage purposes, 1 min of daytime social network usage and games and comics was associated with a 0.28 (p = .02, 95% CI: -0.52, -0.04) min and 0.18 min (p = .01, 95% CI: -0.32, -0.04) decrease in total sleeping time that night, respectively. One minute of daytime smartphone usage was associated with an increase of 4.55 steps in the number of steps (p = .001, 95% CI: 1.77, 7.34) on the next day. To conclude, time spent on a smartphone in the daytime was associated with total sleeping time that night and number of steps the next day, but was not associated with sleep efficiency, wake after sleep onset and moderate-to-vigorous-intensity activity (MVPA) among Hong Kong adolescents and young adults.
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Affiliation(s)
- Paul H Lee
- School of Nursing, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Andy C Y Tse
- Department of Health and Physical Education, Education University of Hong Kong, New Territories, Hong Kong
| | - Cynthia S T Wu
- School of Nursing, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Yim Wah Mak
- School of Nursing, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Uichin Lee
- Department of Knowledge Service Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
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Crane TE, Skiba MB, Miller A, Garcia DO, Thomson CA. Development and Evaluation of an Accelerometer-Based Protocol for Measuring Physical Activity Levels in Cancer Survivors: Development and Usability Study. JMIR Mhealth Uhealth 2020; 8:e18491. [PMID: 32969828 PMCID: PMC7545325 DOI: 10.2196/18491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/03/2020] [Accepted: 07/26/2020] [Indexed: 12/25/2022] Open
Abstract
Background The collection of self-reported physical activity using validated questionnaires has known bias and measurement error. Objective Accelerometry, an objective measure of daily activity, increases the rigor and accuracy of physical activity measurements. Here, we describe the methodology and related protocols for accelerometry data collection and quality assurance using the Actigraph GT9X accelerometer data collection in a convenience sample of ovarian cancer survivors enrolled in GOG/NRG 0225, a 24-month randomized controlled trial of diet and physical activity intervention versus attention control. Methods From July 2015 to December 2019, accelerometers were mailed on 1337 separate occasions to 580 study participants to wear at 4 time points (baseline, 6, 12, and 24 months) for 7 consecutive days. Study staff contacted participants via telephone to confirm their availability to wear the accelerometers and reviewed instructions and procedures regarding the return of the accelerometers and assisted with any technology concerns. Results We evaluated factors associated with wear compliance, including activity tracking, use of a mobile app, and demographic characteristics with chi-square tests and logistic regression. Compliant data, defined as ≥4 consecutive days with ≥10 hours daily wear time, exceeded 90% at all study time points. Activity tracking, but no other characteristics, was significantly associated with compliant data at all time points (P<.001). This implementation of data collection through accelerometry provided highly compliant and usable activity data in women who recently completed treatment for ovarian cancer. Conclusions The high compliance and data quality associated with this protocol suggest that it could be disseminated to support researchers who seek to collect robust objective activity data in cancer survivors residing in a wide geographic area.
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Affiliation(s)
- Tracy E Crane
- Department of Biobehavioral Health Sciences, College of Nursing, University of Arizona, Tucson, AZ, United States
| | - Meghan B Skiba
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, United States
| | - Austin Miller
- Department of Biostatistics, Roswell Park Cancer Institute, Buffalo, NY, United States
| | - David O Garcia
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, United States
| | - Cynthia A Thomson
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, United States
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Vetrovsky T, Clark CCT, Bisi MC, Siranec M, Linhart A, Tufano JJ, Duncan MJ, Belohlavek J. Advances in accelerometry for cardiovascular patients: a systematic review with practical recommendations. ESC Heart Fail 2020; 7:2021-2031. [PMID: 32618431 PMCID: PMC7524133 DOI: 10.1002/ehf2.12781] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/24/2020] [Accepted: 04/28/2020] [Indexed: 12/11/2022] Open
Abstract
Aims Accelerometers are becoming increasingly commonplace for assessing physical activity; however, their use in patients with cardiovascular diseases is relatively substandard. We aimed to systematically review the methods used for collecting and processing accelerometer data in cardiology, using the example of heart failure, and to provide practical recommendations on how to improve objective physical activity assessment in patients with cardiovascular diseases by using accelerometers. Methods and results Four electronic databases were searched up to September 2019 for observational, interventional, and validation studies using accelerometers to assess physical activity in patients with heart failure. Study and population characteristics, details of accelerometry data collection and processing, and description of physical activity metrics were extracted from the eligible studies and synthesized. To assess the quality and completeness of accelerometer reporting, the studies were scored using 12 items on data collection and processing, such as the placement of accelerometer, days of data collected, and criteria for non‐wear of the accelerometer. In 60 eligible studies with 3500 patients (of those, 536 were heart failure with preserved ejection fraction patients), a wide variety of accelerometer brands (n = 27) and models (n = 46) were used, with Actigraph being the most frequent (n = 12), followed by Fitbit (n = 5). The accelerometer was usually worn on the hip (n = 32), and the most prevalent wear period was 7 days (n = 22). The median wear time required for a valid day was 600 min, and between two and five valid days was required for a patient to be included in the analysis. The most common measures of physical activity were steps (n = 20), activity counts (n = 15), and time spent in moderate‐to‐vigorous physical activity (n = 14). Only three studies validated accelerometers in a heart failure population, showing that their accuracy deteriorates at slower speeds. Studies failed to report between one and six (median 4) of the 12 scored items, with non‐wear time criteria and valid day definition being the most underreported items. Conclusions The use of accelerometers in cardiology lacks consistency and reporting on data collection, and processing methods need to be improved. Furthermore, calculating metrics based on raw acceleration and machine learning techniques is lacking, opening the opportunity for future exploration. Therefore, we encourage researchers and clinicians to improve the quality and transparency of data collection and processing by following our proposed practical recommendations for using accelerometers in patients with cardiovascular diseases, which are outlined in the article.
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Affiliation(s)
- Tomas Vetrovsky
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Cain C T Clark
- Faculty of Health and Life Sciences, Coventry University, Coventry, UK
| | - Maria Cristina Bisi
- Department of Electrical, Electronic and Information Engineering 'Guglielmo Marconi', DEI, University of Bologna, Bologna, Italy
| | - Michal Siranec
- 2nd Department of Medicine-Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Ales Linhart
- 2nd Department of Medicine-Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - James J Tufano
- Department of Physiology and Biochemistry, Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Michael J Duncan
- Faculty of Health and Life Sciences, Coventry University, Coventry, UK
| | - Jan Belohlavek
- 2nd Department of Medicine-Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Hansen BH, Dalene KE, Ekelund U, Wang Fagerland M, Kolle E, Steene-Johannessen J, Tarp J, Alfred Anderssen S. Step by step: Association of device-measured daily steps with all-cause mortality-A prospective cohort Study. Scand J Med Sci Sports 2020; 30:1705-1711. [PMID: 32427398 PMCID: PMC7496562 DOI: 10.1111/sms.13726] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/30/2020] [Accepted: 05/11/2020] [Indexed: 12/18/2022]
Abstract
Introduction Walking is free, does not require special training, and can be done almost everywhere. Therefore, walking is a feasible behavior on which to tailor public health messages. This study assesses the prospective association and dose‐response relationship between daily steps and all‐cause mortality. Materials and Methods Daily steps were measured by waist‐mounted accelerometers in 2183 individuals (53% women) for seven consecutive days at baseline (2008‐09). Participants were followed for a median period of 9.1 years and associations between steps and all‐cause mortality determined by registry linkage were assessed using Cox proportional hazard regression with adjustment for relevant covariates. Results Mean age was 57.0 (SD 10.9) years at baseline. Median (IQR) daily steps across ascending quartiles were 4651 (3495‐5325), 6862 (6388‐7350), 8670 (8215‐9186), and 11 467 (10 556‐13 110), respectively. During follow‐up, 119 individuals died (68% men). Higher number of daily steps was associated with a lower risk of all‐cause mortality with hazard ratios of 1.00 (referent), 0.52 (0.29‐0.93), 0.50 (0.27‐0.94), and 0.43 (0.21‐0.88) across ascending quartiles of daily steps in the multivariable‐adjusted model with follow‐up commencing 2 years after baseline. Risk differences per 1000 individuals for ascending quartiles were 6.8 (2.9‐9.3), 7.1 (0.8‐11.1), and 8.0 (1.7‐12.1), respectively. Conclusions Daily steps were associated with lower mortality risk in a non‐linear dose‐response pattern. The risk is almost halved when comparing the least active referent against the second quartile equivalent to a difference of about 2200 daily steps. Encouraging those least active to increase their daily steps may have substantial public health implications.
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Affiliation(s)
- Bjørge Herman Hansen
- Department of Sports Medicine, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Knut Eirik Dalene
- Department of Sports Medicine, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Ulf Ekelund
- Department of Sports Medicine, The Norwegian School of Sport Sciences, Oslo, Norway
| | | | - Elin Kolle
- Department of Sports Medicine, The Norwegian School of Sport Sciences, Oslo, Norway
| | | | - Jakob Tarp
- Department of Sports Medicine, The Norwegian School of Sport Sciences, Oslo, Norway
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de Müllenheim PY, Congnard F, Noury-Desvaux B. Reporting, Analyzing, and Interpreting Activity Monitor Data in Peripheral Artery Disease. Ann Vasc Surg 2020; 67:e571-e572. [PMID: 32171860 DOI: 10.1016/j.avsg.2020.01.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 01/26/2020] [Accepted: 01/31/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Pierre-Yves de Müllenheim
- Institute of Physical Education and Sports Sciences (IFEPSA), West Catholic University (UCO), Les Ponts-de-Cé, France.
| | - Florian Congnard
- Institute of Physical Education and Sports Sciences (IFEPSA), West Catholic University (UCO), Les Ponts-de-Cé, France
| | - Bénédicte Noury-Desvaux
- Institute of Physical Education and Sports Sciences (IFEPSA), West Catholic University (UCO), Les Ponts-de-Cé, France
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- Institute of Physical Education and Sports Sciences (IFEPSA), West Catholic University (UCO), Les Ponts-de-Cé, France
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Lebleu J, Detrembleur C, Guebels C, Hamblenne P, Valet M. Concurrent validity of Nokia Go activity tracker in walking and free-living conditions. J Eval Clin Pract 2020; 26:223-228. [PMID: 30874338 DOI: 10.1111/jep.13125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 01/02/2023]
Abstract
RATIONALE, AIMS, AND OBJECTIVES Consumer-based activity trackers aim at quantifying physical activity in a wide range of contexts. Nevertheless, they need to be validated before they are confidently used. This study assessed the concurrent validity of the Nokia Go against reference devices, according to different sensor locations, in two measurement conditions: during a walking task and during a 24-hour free-living condition. METHODS We examined the agreement between devices and between locations in the number of steps and total sleep time by using intraclass correlation coefficient and Bland-Altman method. RESULTS In the walking task, the agreement is good to excellent for steps between the Nokia Go and the reference device. In the free-living condition, there is a systematic underestimation of steps in comparison with the ActiGraph. Excellent agreement was found between locations. The device worn at the hip indicated the lowest number of steps, and the device located at the dominant wrist indicated the greatest number of steps. CONCLUSIONS There are high discrepancies in step count between devices because of the different types of activities in daily life. The Nokia Go may be confidently used for step counting during pure walking tasks, at different locations. However, the lack of concurrent validity with ActiGraph call for caution regarding their use in daily living conditions.
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Affiliation(s)
- Julien Lebleu
- Université catholique de Louvain, Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Neuro Musculo Skeletal Lab (NMSK), Brussels, Belgium
| | - Christine Detrembleur
- Université catholique de Louvain, Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Neuro Musculo Skeletal Lab (NMSK), Brussels, Belgium
| | | | | | - Maxime Valet
- Université catholique de Louvain, Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Neuro Musculo Skeletal Lab (NMSK), Brussels, Belgium.,Cliniques universitaires Saint-Luc, Service de Médecine Physique et de Réadaptation, Universite catholique de Louvain, Bruxelles, Belgium
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An Open-Source Monitor-Independent Movement Summary for Accelerometer Data Processing. ACTA ACUST UNITED AC 2019; 2:268-281. [PMID: 34308270 DOI: 10.1123/jmpb.2018-0068] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background Physical behavior researchers using motion sensors often use acceleration summaries to visualize, clean, and interpret data. Such output is dependent on device specifications (e.g., dynamic range, sampling rate) and/or are proprietary, which invalidate cross-study comparison of findings when using different devices. This limits flexibility in selecting devices to measure physical activity, sedentary behavior, and sleep. Purpose Develop an open-source, universal acceleration summary metric that accounts for discrepancies in raw data among research and consumer devices. Methods We used signal processing techniques to generate a Monitor-Independent Movement Summary unit (MIMS-unit) optimized to capture normal human motion. Methodological steps included raw signal harmonization to eliminate inter-device variability (e.g., dynamic g-range, sampling rate), bandpass filtering (0.2-5.0 Hz) to eliminate non-human movement, and signal aggregation to reduce data to simplify visualization and summarization. We examined the consistency of MIMS-units using orbital shaker testing on eight accelerometers with varying dynamic range (±2 to ±8 g) and sampling rates (20-100 Hz), and human data (N = 60) from an ActiGraph GT9X. Results During shaker testing, MIMS-units yielded lower between-device coefficient of variations than proprietary ActiGraph and ENMO acceleration summaries. Unlike the widely used ActiGraph activity counts, MIMS-units were sensitive in detecting subtle wrist movements during sedentary behaviors. Conclusions Open-source MIMS-units may provide a means to summarize high-resolution raw data in a device-independent manner, thereby increasing standardization of data cleaning and analytical procedures to estimate selected attributes of physical behavior across studies.
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Affiliation(s)
- Pei-Lun Kuo
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Jacek K Urbanek
- Division of Geriatric Medicine and Gerontology, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland.,Center on Aging and Health, Johns Hopkins University, Baltimore, Maryland
| | - Jennifer A Schrack
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,Center on Aging and Health, Johns Hopkins University, Baltimore, Maryland
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Vetrovsky T, Siranec M, Marencakova J, Tufano JJ, Capek V, Bunc V, Belohlavek J. Validity of six consumer-level activity monitors for measuring steps in patients with chronic heart failure. PLoS One 2019; 14:e0222569. [PMID: 31518367 PMCID: PMC6743766 DOI: 10.1371/journal.pone.0222569] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 09/03/2019] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION Although numerous activity trackers have been validated in healthy populations, validation is lacking in chronic heart failure patients who normally walk at a slower pace, making it difficult for researchers and clinicians to implement activity monitors during physical activity interventions. METHODS Six consumer-level activity monitors were validated in a 3-day field study in patients with chronic heart failure and healthy individuals under free living conditions. Furthermore, the same devices were evaluated in a lab-based study during treadmill walking at speeds of 2.4, 3.0, 3.6, and 4.2 km·h-1. Concordance correlation coefficients (CCC) were used to evaluate the agreement between the activity monitors and the criterion, and mean absolute percentage errors (MAPE) were calculated to assess differences between each device and the criterion (MAPE <10% was considered as a threshold for validity). RESULTS In the field study of healthy individuals, all but one of the activity monitors showed a substantial correlation (CCC ≥0.95) with the criterion device and MAPE <10%. In patients with heart failure, the correlation of only two activity monitors (Garmin vívofit 3 and Withings Go) was classified as at least moderate (CCC ≥0.90) and none of the devices had MAPE <10%. In the lab-based study at speeds 4.2 and 3.6 km·h-1, all activity monitors showed substantial to almost perfect correlations (CCC ≥0.95) with the criterion and MAPE in the range 1%-3%. However, at slower speeds of 3.0 and 2.4 km·h-1, the accuracy of all devices substantially deteriorated: their correlation with the criterion decreased below 90% and their MAPE increased to 4-8% and 10-45%, respectively. CONCLUSIONS Even though none of the tested activity monitors fall within arbitrary thresholds for validity, most of them perform reasonably well enough to be useful tools that clinicians can use to simply motivate chronic heart failure patients to walk more.
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Affiliation(s)
- Tomas Vetrovsky
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
- * E-mail:
| | - Michal Siranec
- 2nd Department of Medicine – Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Jitka Marencakova
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - James J. Tufano
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Vaclav Capek
- Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Vaclav Bunc
- Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic
| | - Jan Belohlavek
- 2nd Department of Medicine – Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Talbot, Col, Usafr (Ret) LA, Brede E, Price MN, Zuber PD, Metter EJ. Self-Managed Strength Training for Active Duty Military With a Knee Injury: A Randomized Controlled Pilot Trial. Mil Med 2019; 184:e174-e183. [PMID: 30690578 DOI: 10.1093/milmed/usy347] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/07/2018] [Accepted: 11/05/2018] [Indexed: 11/08/2023] Open
Abstract
INTRODUCTION Knee injuries among active duty military are one of the most frequent musculoskeletal injuries and are often caused by exercise or intense physical activity or combat training. These injuries pose a threat to force readiness. Our objective was to assess feasibility (including recruitment and retention rates) of three self-managed strengthening strategies for knee injuries and determine if they resulted in improvements in lower extremity strength, function, pain, and activity compared to usual physical therapy (PT) in military members. METHODS A pilot study using a randomized controlled trial was conducted at three outpatient military medical treatment facilities. After baseline testing, 78 active duty military members with a knee injury were randomized to 1-4 trial arms: (1) neuromuscular electrical stimulation (NMES) applied to the quadriceps muscle; (2) graduated strength walking using a weighted vest (WALK); (3) combined NMES with strength walking (COMBO); (4) usual PT alone. All groups received usual PT. The primary outcome was the rates of change in knee extensor and flexor strength over 18 weeks. Secondary outcomes explored the rates of change in functional performance, pain, and activities of daily living scale (ADLS). The primary analysis for the endpoints used repeated measures, linear mixed-effects models. This study was approved by Institutional Review Boards at all facilities. RESULTS The randomized sample (N = 78) included 19 participants in the PT-only, 20 in the WALK, 19 in the NMES and 20 in the COMBO groups. At baseline, there were no group differences. Fifty of the participants completed the 18-week study. The completers and non-completers differed at baseline on injury mechanism, with more completers injured during sports (45% vs 29%), and more non-completers during military training (36% vs 18%). Also, they differed in uninjured knee extension (completers 28% weaker), and uninjured knee flexion (completers 22% weaker). Adherence for self-reported daily step logs showed that the WALK group was 15% below goal and COMBO group 6% below goal. The 300 PV muscle stimulator showed the NMES group completed 34% of recommended stimulation sessions and the COMBO group 30%.Knee extension strength in the injured knee found only the COMBO group having a statistically higher improvement compared to PT-only (Change over 18 weeks: 10.6 kg in COMBO; 2.1 kg in PT-only). For the injured knee flexion changes, only the COMBO showed significant difference from PT-only (Change over 18 weeks: 7.5 kg in COMBO; -0.2 kg in PT-only). Similarly, for the uninjured knee, only the COMBO showed significant difference from PT-only in knee extension (Change over 18 weeks: 14.7 Kg in COMBO; 2.7 kg in PT-only) and knee flexion (Change over 18 weeks: 6.5 kg in COMBO; -0.2 kg in PT-only). Overall pain improved during the study for all groups with no significant group differences. Similarly, function and ADLS significantly improved over 18 weeks, with no significant group differences. CONCLUSIONS Knee extensor strength improvements in the COMBO group were significantly higher compared to usual PT. Pain, functional measures, and ADLS all improved during the study with no group differences. Further research is required to confirm these findings.
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Affiliation(s)
- Laura A Talbot, Col, Usafr (Ret)
- College of Medicine, University of Tennessee Health Science Center, Department of Neurology, 855 Monroe Ave, Suite 415, Memphis, TN
| | - Emily Brede
- College of Medicine, University of Tennessee Health Science Center, Department of Neurology, 855 Monroe Ave, Suite 415, Memphis, TN
| | - Marquita N Price
- Commander, 20th Medical Operations Squadron, 20th Medical Group, Shaw AFB, SC, DSN
| | - Pilar D Zuber
- College of Health and Human Services, University of North Carolina at Charlotte, Department of Public Health Sciences, 9201 University City Blvd, Charlotte, NC
| | - E Jeffrey Metter
- College of Medicine, University of Tennessee Health Science Center, Department of Neurology, 855 Monroe Ave, Suite 415, Memphis, TN
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Effects of Brief Intermittent Walking Bouts on Step Count Accuracy of Wearable Devices. ACTA ACUST UNITED AC 2019. [DOI: 10.1123/jmpb.2018-0050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Cavero-Redondo I, Tudor-Locke C, Álvarez-Bueno C, Cunha PG, Aguiar EJ, Martínez-Vizcaíno V. Steps per Day and Arterial Stiffness. Hypertension 2019; 73:350-363. [DOI: 10.1161/hypertensionaha.118.11987] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Iván Cavero-Redondo
- From the Universidad de Castilla-La Mancha, Health and Social Research Center, Cuenca, Spain (I.C.-R., C.A.-B., V.M.-V.)
| | - Catrine Tudor-Locke
- Department of Kinesiology, University of Massachusetts Amherst, MA (C.T.-L., E.J.A.)
| | - Celia Álvarez-Bueno
- From the Universidad de Castilla-La Mancha, Health and Social Research Center, Cuenca, Spain (I.C.-R., C.A.-B., V.M.-V.)
| | - Pedro G. Cunha
- Center for the Research and Treatment of Arterial Hypertension and Cardiovascular Risk, Internal Medicine Department, Guimarães, Portugal (P.G.C.)
| | - Elroy J. Aguiar
- Department of Kinesiology, University of Massachusetts Amherst, MA (C.T.-L., E.J.A.)
| | - Vicente Martínez-Vizcaíno
- From the Universidad de Castilla-La Mancha, Health and Social Research Center, Cuenca, Spain (I.C.-R., C.A.-B., V.M.-V.)
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Application and Validation of Activity Monitors' Epoch Lengths and Placement Sites for Physical Activity Assessment in Exergaming. J Clin Med 2018; 7:jcm7090268. [PMID: 30208567 PMCID: PMC6162850 DOI: 10.3390/jcm7090268] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 08/27/2018] [Accepted: 09/07/2018] [Indexed: 11/17/2022] Open
Abstract
We assessed the agreement of two ActiGraph activity monitors (wGT3X vs. GT9X) placed at the hip and the wrist and determined an appropriate epoch length for physical activity levels in an exergaming setting. Forty-seven young adults played a 30-min exergame while wearing wGT3X and GT9X on both hip and wrist placement sites and a heart rate sensor below the chest. Intraclass correlation coefficient indicated that intermonitor agreement in steps and activity counts was excellent on the hip and good on the wrist. Bland-Altman plots indicated good intermonitor agreement in the steps and activity counts on both placement sites but a significant intermonitor difference was detected in steps on the wrist. Time spent in sedentary and physical activity intensity levels varied across six epoch lengths and depended on the placement sites, whereas time spent from a 1-s epoch of the hip-worn monitors most accurately matched the relative exercise intensity by heart rate. Hip placement site was associated with better step-counting accuracy for both activity monitors and more valid estimation of physical activity levels. A 1-s epoch was the most appropriate epoch length to detect short bursts of intense physical activity and may be the best choice for data processing and analysis in exergaming studies examining intermittent physical activities.
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