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Tuckwell GA, Gupta CC, Vincent GE, Vandelanotte C, Duncan MJ, Ferguson SA. Calibrated to drive: Measuring self-assessed driving ability and perceived workload after prolonged sitting and sleep restriction. Accid Anal Prev 2024; 202:107609. [PMID: 38701560 DOI: 10.1016/j.aap.2024.107609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 04/08/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
Self-assessed driving ability may differ from actual driving performance, leading to poor calibration (i.e., differences between self-assessed driving ability and actual performance), increased risk of accidents and unsafe driving behaviour. Factors such as sleep restriction and sedentary behaviour can impact driver workload, which influences driver calibration. This study aims to investigate how sleep restriction and prolonged sitting impact driver workload and driver calibration to identify strategies that can lead to safer and better calibrated drivers. Participants (n = 84, mean age = 23.5 ± 4.8, 49 % female) undertook a 7-day laboratory study and were randomly allocated to a condition: sitting 9-h sleep opportunity (Sit9), breaking up sitting 9-h sleep opportunity (Break9), sitting 5-h sleep opportunity (Sit5) and breaking up sitting 5-h sleep opportunity (Break5). Break9 and Break5 conditions completed 3-min of light-intensity walking on a treadmill every 30 min between 09:00-17:00 h, while participants in Sit9 and Sit5 conditions remained seated. Each participant completed a 20-min simulated commute in the morning and afternoon each day and completed subjective assessments of driving ability and perceived workload before and after each commute. Objective driving performance was assessed using a driving simulator measuring speed and lane performance metrics. Driver calibration was analysed using a single component and 3-component Brier Score. Correlational matrices were conducted as an exploratory analysis to understand the strength and direction of the relationship between subjective and objective driving outcomes. Analyses revealed participants in Sit9 and Break9 were significantly better calibrated for lane variability, lane position and safe zone-lane parameters at both time points (p < 0.0001) compared to Sit5 and Break5. Break5 participants were better calibrated for safe zone-speed and combined safe zone parameters (p < 0.0001) and speed variability at both time points (p = 0.005) compared to all other conditions. Analyses revealed lower perceived workload scores at both time points for Sit9 and Break9 participants compared to Sit5 and Break5 (p = <0.001). Breaking up sitting during the day may reduce calibration errors compared to sitting during the day for speed keeping parameters. Future studies should investigate if different physical activity frequency and intensity can reduce calibration errors, and better align a driver's self-assessment with their actual performance.
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Affiliation(s)
- Georgia A Tuckwell
- Central Queensland University, Appleton Institute, School of Health, Medical and Applied Sciences, Adelaide, Australia.
| | - Charlotte C Gupta
- Central Queensland University, Appleton Institute, School of Health, Medical and Applied Sciences, Adelaide, Australia
| | - Grace E Vincent
- Central Queensland University, Appleton Institute, School of Health, Medical and Applied Sciences, Adelaide, Australia
| | - Corneel Vandelanotte
- Central Queensland University, Appleton Institute, School of Health, Medical and Applied Sciences, Adelaide, Australia
| | - Mitch J Duncan
- The University of Newcastle, School of Medicine & Public Health, Callaghan, Australia; Active Living Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Sally A Ferguson
- Central Queensland University, Appleton Institute, School of Health, Medical and Applied Sciences, Adelaide, Australia
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Brierley ML, Chater AM, Edwardson CL, Castle EM, Hunt ER, Biddle SJ, Sisodia R, Bailey DP. The Regulate your Sitting Time (RESIT) intervention for reducing sitting time in individuals with type 2 diabetes: findings from a randomised-controlled feasibility trial. Diabetol Metab Syndr 2024; 16:87. [PMID: 38659052 PMCID: PMC11040907 DOI: 10.1186/s13098-024-01336-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND Reducing and breaking up sitting is recommended for optimal management of Type 2 diabetes mellitus (T2DM). Yet, there is limited evidence of interventions targeting these outcomes in individuals with this condition. The primary aim of this study was to assess the feasibility and acceptability of delivering and evaluating a tailored online intervention to reduce and break up sitting in adults with T2DM. METHODS A mixed-methods two-arm randomised controlled feasibility trial was conducted in ambulatory adults with T2DM who were randomised 1:1 to the REgulate your SItting Time (RESIT) intervention or usual care control group. The intervention included online education, self-monitoring and prompt tools (wearable devices, smartphone apps, computer apps) and health coaching. Feasibility outcomes were recruitment, attrition, data completion rates and intervention acceptability. Measurements of device-assessed sitting (intended primary outcome for definitive trial), standing and stepping, and physical function, psychosocial health and wellbeing were taken at baseline, 3 months and 6 months. Individual semi-structured interviews were conducted at six-months (post intervention) to explore acceptability, feasibility and experiences of the trial and intervention using the Framework Method. RESULTS Seventy participants aged 55 ± 11 years were recruited. Recruitment rate (proportion of eligible participants enrolled into the study) was 67% and participant retention rate at 6 months was 93% (n = 5 withdrawals). Data completion rates for daily sitting were 100% at baseline and ranged from 83 to 91% at 3 months and 6 months. Descriptive analysis demonstrated potential for the intervention to reduce device-measured sitting, which was 30.9 ± 87.2 and 22.2 ± 82.5 min/day lower in the intervention group at 3 and 6 months, respectively, compared with baseline. In the control group, sitting was 4.4 ± 99.5 and 23.7 ± 85.2 min/day lower at 3 and 6 months, respectively. Qualitative analysis identified three themes: reasons for participating in the trial, acceptability of study procedures, and the delivery and experience of taking part in the RESIT intervention. Overall, the measurement visits and intervention were acceptable to participants. CONCLUSIONS This study demonstrated the feasibility and acceptability of the RESIT intervention and evaluation methods, supporting a future definitive trial. If RESIT is found to be clinically effective, this could lead to changes in diabetes healthcare with a focus on reducing sitting. TRIAL REGISTRATION The trial was registered with ISRCTN (number ISRCTN14832389).
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Affiliation(s)
- Marsha L Brierley
- Centre for Physical Activity in Health and Disease, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK
- Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK
| | - Angel M Chater
- Institute for Sport and Physical Activity Research, Centre for Health, Wellbeing and Behaviour Change, University of Bedfordshire, Polhill Avenue, MK41 9EA, Bedford, UK
- Centre for Behaviour Change, University College London, 1-19 Torrington Place, WC1E 7HB, London, UK
| | - Charlotte L Edwardson
- Leicester Lifestyle and Health Research Group, Diabetes Research Centre, University of Leicester, Leicester General Hospital, LE5 4PW, Leicester, UK
- NIHR Leicester Biomedical Research Centre, Leicester General Hospital, LE5 4PW, Leicester, UK
| | - Ellen M Castle
- Centre for Physical Activity in Health and Disease, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK
- Physiotherapy Division, Department of Health Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, UB8 4PH, Uxbridge, UK
- Curtin School of Allied Health, School of Health Sciences, Curtin University, Western Australia, 6845, Bentley, Australia
| | - Emily R Hunt
- Centre for Physical Activity in Health and Disease, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK
- Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK
| | - Stuart Jh Biddle
- Centre for Health Research, University of Southern Queensland, Springfield Central, 4300, Springfield, QLD, Australia
- Faculty of Sport & Health Sciences, University of Jyväskylä, FI-40014, Jyväskylä, Finland
| | - Rupa Sisodia
- Centre for Physical Activity in Health and Disease, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK
- Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK
| | - Daniel P Bailey
- Centre for Physical Activity in Health and Disease, College of Health, Medicine and Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK.
- Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Kingston Lane, UB8 3PH, Uxbridge, UK.
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Raj AK, Pedersen SJ, Mainsbridge C, Rao CR, Roy S, Chandrasekaran B. Influence of short bouts of stair climbing on young adults during prolonged sitting on posture, discomfort, and musculoskeletal performance outcomes: a counterbalanced pilot randomised crossover trial. Ergonomics 2024:1-12. [PMID: 38571330 DOI: 10.1080/00140139.2024.2335551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 03/22/2024] [Indexed: 04/05/2024]
Abstract
Prolonged sitting is postulated to influence musculoskeletal performance (cervical flexor endurance, balance, and agility), discomfort and alter cervical spine angles during work-based computer use. Stair climbing breaks may be a great addition at typical and home offices however remain unexplored for its impact on musculoskeletal performance. In our counterbalanced pilot crossover trial, 24 adults were randomised to three interventions: (1) prolonged sitting, (2) interrupted by 2 min of self-paced, and (3) externally paced stair climbing for 2 h. Cervical spine angles were measured every 30 min while balance, agility, endurance, and discomfort were assessed before and after 120 min. Stair climbing interruptions have favourable effects on agility (F = 8.12, p = 0.009, ηp2 = 0.26) and musculoskeletal discomfort, but failed to improve other musculoskeletal outcomes associated with prolonged sitting. Brief stair climbing interruptions are effective in improving discomfort and agility while pragmatic trials are warranted for translated effects.
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Affiliation(s)
- Arjun K Raj
- Department of Exercise and Sports Sciences, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Scott J Pedersen
- Active Work Laboratory, School of Education, University of Tasmania, Launceston, Australia
| | - Casey Mainsbridge
- Personal Development, Health and Physical Education, Faculty of Humanities, Arts, Social Sciences and Education, School of Education, University of New England, Armidale, Australia
| | - Chythra R Rao
- Department of Community Medicine, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Sohini Roy
- Department of Exercise and Sports Sciences, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Baskaran Chandrasekaran
- Department of Exercise and Sports Sciences, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
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Riley S, Paterson C, Bates-Fraser LC, Ondrak KS, Stoner L, Hanson ED. Uninterrupted prolonged sitting and arterial stiffness: moderating effect of prior aerobic exercise in physically active adults. Eur J Appl Physiol 2024:10.1007/s00421-024-05419-0. [PMID: 38280015 DOI: 10.1007/s00421-024-05419-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 01/02/2024] [Indexed: 01/29/2024]
Abstract
PURPOSE Prolonged sitting acutely increases arterial stiffness, with interruption strategies only providing limited success in offsetting these rises. Acute aerobic exercise is a potent stimulus to decrease arterial stiffness. However, limited information exists on the effectiveness of acute exercise to maintain arterial stiffness when performed prior to prolonged sitting, particularly within physically active individuals. METHODS Using a randomized crossover design, 22 young, active individuals (50% female) performed two conditions 30 min of walking at 55-65% of heart rate reserve (EX) and 30 min of standing (STAND) followed by 2.5-h of sitting. Brachial-femoral (bfPWV) and femoral-ankle pulse wave velocity (faPWV) were assessed at Baseline, post-exercise and pre-sitting (Pre), and post-sitting (Post) as estimates of central and peripheral arterial stiffness, respectively. RESULTS For bfPWV, no interaction, condition, or time effects were observed. For faPWV, an interaction was present (p < 0.001); compared to Baseline, there was a 6.1% decrease for EX (- 0.4 m/s, p < 0.001) and a 4.6% increase for STAND (0.3 m/s, p = 0.016) for STAND such that there was an 11.3% difference between conditions at Pre (0.7 m/s, p < 0.001). From Pre to Post, EX then increased by 11.7% (0.9 m/s p < 0.001) while STAND remained unchanged, resulting in no difference between conditions (0.1 m/s, p = 0.569). CONCLUSIONS While aerobic exercise resulted in a significant decrease in faPWV prior to sitting, the prior exercise bout did not confer a protective effect against the deleterious effects of uninterrupted sitting. Future work should investigate the combined effect of prior exercise and sitting interruption strategies on markers of arterial stiffness.
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Affiliation(s)
- Sasha Riley
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Craig Paterson
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lauren C Bates-Fraser
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Human Movement Science Curriculum, Department of Allied Health Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kristin S Ondrak
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lee Stoner
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Human Movement Science Curriculum, Department of Allied Health Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Center for Health Promotion and Disease Prevention, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Erik D Hanson
- Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Human Movement Science Curriculum, Department of Allied Health Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Alameri MA, Jaber HM, Daher NS, Shallan AI, Khallaf M, Alshebber K, Dudley R, Martinez A, Lohman EB. Comparisons of lumbosacral kinematics among non-specific chronic low back pain subgroups and healthy during prolonged sitting: A cross-sectional observational study. J Bodyw Mov Ther 2024; 37:254-264. [PMID: 38432815 DOI: 10.1016/j.jbmt.2023.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 05/05/2023] [Accepted: 11/12/2023] [Indexed: 03/05/2024]
Abstract
BACKGROUND The literature has suggested a variety of postural changes of the spine that possibly contribute to the increase in back pain during sitting in persons with non-specific chronic low back pain (NS-CLBP). However, the heterogeneity of NS-CLBP persons has made the ability to attribute pain increase to a particular sitting posture very difficult. Therefore, the purpose of this study was to compare lumbosacral kinematics and their roles in pain increase among homogenous NS-CLBP subgroups and healthy controls over a 1-h sitting period. METHODS Twenty NS-CLBP subjects with motor control impairment [10 classified as having flexion pattern (FP) disorder, and 10 with active extension pattern (AEP) disorder], and 10 healthy controls participated in the study. Subjects underwent a 1-h sitting protocol on a standard office chair. Lumbosacral postures including sacral tilt, third lumbar vertebrae (L3) position, and relative lower lumbar angle were recorded using two-dimensional inclinometers over the 1-h period. Perceived back-pain intensity was measured using a visual analog scale every 10 min throughout the sitting period. RESULTS All study groups (FP, AEP and healthy controls) significantly differed from each other in the measured lumbosacral kinematics at the beginning as well as at the end of the sitting period (p ≤ 0.05). Only the NS-CLBP subgroups showed significant changes in the lumbosacral kinematics across the 1-h sitting period (p < 0.01), and that the directions of change occurred toward end spinal postures (lumbar kyphosis for FP subgroup and lumbar lordosis for the AEP subgroup). In addition, both NS-CLBP subgroups reported a similarly significant increase in pain through mid-sitting (p < 0.001). However, after mid-sitting, the AEP subgroup reported much less increase in pain level that was accompanied by a significant decrease in the lumbar lordotic postures (p = 0.001) compared to FP subgroup. CONCLUSION The present study's findings suggest that each NS-CLBP subgroup presented with differently inherent sitting postures. These inherently dysfunctional postures coupled with the directional changes in the lumbosacral kinematics toward the extreme ranges across the 1-h sitting period, might explain the significant increase in pain among subgroups.
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Affiliation(s)
- Mansoor A Alameri
- Department of Physical Therapy, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA; Department of Physical Therapy, School of Rehabilitative Sciences, University of St Augustine for Health Sciences, Austin, TX, USA.
| | - Hatem M Jaber
- Department of Physical Therapy, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA; Department of Physical Therapy, School of Rehabilitative Sciences, University of St Augustine for Health Sciences, Austin, TX, USA
| | - Noha S Daher
- Department of Allied Health Studies, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA
| | - Amjad I Shallan
- Department of Physical Therapy, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA; Department of Physical Therapy, Faculty of Applied Medical Sciences, The Hashemite University, Zarqa, Jordan
| | - Mohamed Khallaf
- Department of Physical Therapy, School of Rehabilitative Sciences, University of St Augustine for Health Sciences, Austin, TX, USA
| | - Kefah Alshebber
- Department of Physical Therapy, School of Rehabilitative Sciences, University of St Augustine for Health Sciences, Austin, TX, USA
| | - Robert Dudley
- Department of Physical Therapy, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA
| | | | - Everett B Lohman
- Department of Physical Therapy, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA
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Zhang T, Huang B, Yan Y, Lin Y, Wong H, Wong SYS, Chung RYN. Street-view and traditional greenness metrics with adults' sitting time in high-density living in Hong Kong: Comparing associations, air pollution and noise roles, and population heterogeneity. Sci Total Environ 2023; 870:161778. [PMID: 36716875 DOI: 10.1016/j.scitotenv.2023.161778] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 01/08/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Emerging evidence suggests neighborhood greenness is associated with physical activity; however, the sitting-specific associations with multi-source greenness metrics remain unclear, especially in high-density cities. OBJECTIVES This cross-sectional study examined: 1) the associations of street-view greenness (SVG) and traditional greenness metrics (i.e., Normalized Difference Vegetable Index (NDVI) and park density) with sitting time; 2) the potential moderating/mediating roles of objective/perceived air pollution and perceived roadside noise; and 3) how the associations vary by demographics and socioeconomic status. METHODS Interview survey data of 1977 adults in Hong Kong from 2014 and 2015 was linked to environmental data. Using an object-based image classification algorithm, SVG was derived from Google Street View images, capturing human-viewed street-level greenery. NDVI was derived from Landsat 8 satellite images using the normalized difference between the near-infrared and red bands. Park density was calculated by point density. In the main analyses including regressions, parallel mediation, interaction, and stratified models, the environmental metrics were measured within a 1000-m Euclidean buffer of residence. RESULTS SVG and park density were negatively associated with sitting time after adjusting for covariates including physical activity while NDVI was not significantly associated with sitting time, and results were robust with 800-1800 m Euclidean and 1400-1800 m network distance. Greenness-sitting associations were not moderated/mediated by perceived air pollution/roadside noise while SVG-sitting associations were moderated by objective NO2, O3, and PM2.5 and mediated by O3. SVG-sitting associations differed by age, having under-school-aged children, birthplace, education, and occupation type while associations between traditional greenness metrics and prolonged sitting showed no significant population heterogeneity. CONCLUSIONS SVG appears to be more accurate in estimating exposure than traditional metrics to reflect greenness-sitting associations, objective air pollution moderating and mediating roles, and population heterogeneity, which emphasizes the importance of street-level greenness planning for health promotion in terms of reducing sitting time.
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Affiliation(s)
- Ting Zhang
- School of International and Public Affairs, Shanghai Jiao Tong University, Shanghai 200030, China; Institute of Space and Earth Information Science, The Chinese University of Hong Kong, 999077, Hong Kong.
| | - Bo Huang
- Institute of Space and Earth Information Science, The Chinese University of Hong Kong, 999077, Hong Kong; Department of Geography and Resource Management, The Chinese University of Hong Kong, 999077, Hong Kong; Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen 518057, China.
| | - Yizhen Yan
- Institute of Space and Earth Information Science, The Chinese University of Hong Kong, 999077, Hong Kong.
| | - Yinyi Lin
- Department of Geography, The University of Hong Kong, 999077, Hong Kong.
| | - Hung Wong
- Department of Social Work, The Chinese University of Hong Kong, 999077, Hong Kong; Institute of CUHK Institute of Health Equity, The Chinese University of Hong Kong, 999077, Hong Kong.
| | - Samuel Yeung-Shan Wong
- Institute of CUHK Institute of Health Equity, The Chinese University of Hong Kong, 999077, Hong Kong; JC School of Public Health and Primary Care, The Chinese University of Hong Kong, 999077, Hong Kong.
| | - Roger Yat-Nork Chung
- Institute of CUHK Institute of Health Equity, The Chinese University of Hong Kong, 999077, Hong Kong; JC School of Public Health and Primary Care, The Chinese University of Hong Kong, 999077, Hong Kong.
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Voigt L, Ullrich A, Groß S, Guertler D, Jaeschke L, Dörr M, van den Berg N, John U, Ulbricht S. Associations of accelerometer-based sedentary bouts with adiposity markers among German adults - results from a cross-sectional study. BMC Public Health 2023; 23:469. [PMID: 36899317 PMCID: PMC10007749 DOI: 10.1186/s12889-023-15304-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 02/21/2023] [Indexed: 03/12/2023] Open
Abstract
BACKGROUND Long periods of uninterrupted sitting, i.e., sedentary bouts, and their relationship with adverse health outcomes have moved into focus of public health recommendations. However, evidence on associations between sedentary bouts and adiposity markers is limited. Our aim was to investigate associations of the daily number of sedentary bouts with waist circumference (WC) and body mass index (BMI) in a sample of middle-aged to older adults. METHODS In this cross-sectional study, data were collected from three different studies that took place in the area of Greifswald, Northern Germany, between 2012 and 2018. In total, 460 adults from the general population aged 40 to 75 years and without known cardiovascular disease wore tri-axial accelerometers (ActiGraph Model GT3X+, Pensacola, FL) on the hip for seven consecutive days. A wear time of ≥ 10 h on ≥ 4 days was required for analyses. WC (cm) and BMI (kg m- 2) were measured in a standardized way. Separate multilevel mixed-effects linear regression analyses were used to investigate associations of sedentary bouts (1 to 10 min, >10 to 30 min, and >30 min) with WC and BMI. Models were adjusted for potential confounders including sex, age, school education, employment, current smoking, season of data collection, and composition of accelerometer-based time use. RESULTS Participants (66% females) were on average 57.1 (standard deviation, SD 8.5) years old and 36% had a school education >10 years. The mean number of sedentary bouts per day was 95.1 (SD 25.0) for 1-to-10-minute bouts, 13.3 (SD 3.4) for >10-to-30-minute bouts and 3.5 (SD 1.9) for >30-minute bouts. Mean WC was 91.1 cm (SD 12.3) and mean BMI was 26.9 kg m- 2 (SD 3.8). The daily number of 1-to-10-minute bouts was inversely associated with BMI (b = -0.027; p = 0.047) and the daily number of >30-minute bouts was positively associated with WC (b = 0.330; p = 0.001). All other associations were not statistically significant. CONCLUSION The findings provide some evidence on favourable associations of short sedentary bouts as well as unfavourable associations of long sedentary bouts with adiposity markers. Our results may contribute to a growing body of literature that can help to define public health recommendations for interrupting prolonged sedentary periods. TRIAL REGISTRATION Study 1: German Clinical Trials Register (DRKS00010996); study 2: ClinicalTrials.gov (NCT02990039); study 3: ClinicalTrials.gov (NCT03539237).
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Affiliation(s)
- Lisa Voigt
- Department of Prevention Research and Social Medicine, Institute for Community Medicine, University Medicine Greifswald, Walther-Rathenau-Str. 48, Greifswald, D-17475, Germany.
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany.
- Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany.
| | - Antje Ullrich
- Department of Prevention Research and Social Medicine, Institute for Community Medicine, University Medicine Greifswald, Walther-Rathenau-Str. 48, Greifswald, D-17475, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
| | - Stefan Groß
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
- Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Diana Guertler
- Department of Prevention Research and Social Medicine, Institute for Community Medicine, University Medicine Greifswald, Walther-Rathenau-Str. 48, Greifswald, D-17475, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
| | - Lina Jaeschke
- Molecular Epidemiology Research Group, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Marcus Dörr
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
- Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Neeltje van den Berg
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
- Section Epidemiology of Health Care and Community Health, Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Ulrich John
- Department of Prevention Research and Social Medicine, Institute for Community Medicine, University Medicine Greifswald, Walther-Rathenau-Str. 48, Greifswald, D-17475, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
| | - Sabina Ulbricht
- Department of Prevention Research and Social Medicine, Institute for Community Medicine, University Medicine Greifswald, Walther-Rathenau-Str. 48, Greifswald, D-17475, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Greifswald, Greifswald, Germany
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Sahabudhee A, Rao CR, Chandrasekaran B, Pedersen SJ. Dose-response effects of periodic physical activity breaks on the chronic inflammatory risk associated with sedentary behavior in high- and upper-middle income countries: A systematic review and meta-analysis. Diabetes Metab Syndr 2023; 17:102730. [PMID: 36863092 DOI: 10.1016/j.dsx.2023.102730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 02/16/2023] [Accepted: 02/19/2023] [Indexed: 02/25/2023]
Abstract
BACKGROUND AND AIMS Though moderate-vigorous physical activity (MVPA) is speculated to mitigate the inflammatory risk associated with sedentary behavior, only a fraction of the global population meets the recommended weekly dose of MVPA. More individuals indulge in bouted and sporadic light-intensity physical activity (LIPA) that occurs throughout the typical day. However, the anti-inflammatory effects of LIPA or MVPA breaks during prolonged sitting remains unclear. METHODS A systematic search was done on six peer-reviewed databases through January 27th, 2023. Two authors independently screened the citations for eligibility, and risk of bias and performed a meta-analysis. RESULTS The included studies originated from high and upper - middle income countries. Observational studies of SB interruptions with LIPA showed favourable effects on inflammatory mediators such as higher levels of adiponectin (odds ratio, OR = +0.14; p = 0.02). However, these findings are not supported by the experimental studies. Experimental studies reported non-significant increase in cytokines including IL-1β (standardised mean difference, SMD = 0.11 pg/ml; p = 0.29) and IL-6 (SMD = 0.19 pg/ml; p = 0.46) after interrupting sitting with LIPA breaks. But these LIPA breaks were found to reduce C-reactive protein (SMD = - 0.50 mg/dl; p = 0.85) and IL-8 levels (SMD = -0.08 pg/ml; p = 0.34) but did not reach statistical significance. CONCLUSION Interrupting prolonged sitting time with LIPA breaks shows promise for preventing the inflammatory effects associated with prolonged bouts of daily sitting, though the evidence remains in infancy and limited to high- and upper-middle income countries.
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Affiliation(s)
- Azarudheen Sahabudhee
- Department of Exercise and Sports Sciences, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Chythra R Rao
- Department of Community Medicine, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka - 576104, India.
| | - Baskaran Chandrasekaran
- Department of Exercise and Sports Sciences, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India; Center for Sports Science, Medicine and Research, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Scott J Pedersen
- Active Work Laboratory, School of Education, University of Tasmania, Tasmania, Australia.
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9
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Wright A, Stavres J, Galloway R, Donahue P, Sha Z, McCoy S. Aortic stiffness increases during prolonged sitting independent of intermittent standing or prior exercise. Eur J Appl Physiol 2023; 123:533-546. [PMID: 36334128 DOI: 10.1007/s00421-022-05079-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/13/2022] [Indexed: 11/07/2022]
Abstract
INTRODUCTION Adverse vascular responses can occur during prolonged sitting, including stiffening of the aortic artery which may contribute to cardiovascular disease. Few studies have investigated the impact of intermittent standing and/or prior exercise as strategies to attenuate these potentially deleterious vascular changes. PURPOSE To investigate central vascular health responses during prolonged sitting, with and without intermittent standing and/or prior exercise. METHODS Fifteen males aged 18 to 31 years were recruited. Subjects completed a control condition [Sitting Only (SO)], and three randomized strategy conditions [Sitting Plus Standing (SSt), Exercise Plus Sitting (ES), Exercise Plus Sitting Plus Standing (ESSt)]. For all conditions, measurements of carotid-femoral pulse wave velocity (cfPWV) were taken at pre- and post-intervention, and brachial and central blood pressure (BP) at pre-, 1-h, 2-h, and 3-h intervention. RESULTS cfPWV significantly increased from pre- to post-intervention for all conditions (all p ≤ 0.043), as did brachial mean arterial pressure (MAP) and diastolic BP, and central MAP and diastolic BP for the control condition (all p ≤ 0.022). Brachial and central systolic BP were significantly higher during SO compared to ESSt at 1 h, and compared to ES for central systolic BP (all p ≤ 0.036). CONCLUSIONS Strategies of intermittent standing and/or prior exercise may not prevent aortic stiffening during sitting but may attenuate BP elevations in the brachial and aortic arteries. Future research should investigate causal mechanistic links between sitting and aortic stiffening, and other attenuation strategies.
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Affiliation(s)
- Alexander Wright
- School of Kinesiology and Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS, USA.
| | - Jon Stavres
- School of Kinesiology and Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Riley Galloway
- School of Kinesiology and Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Paul Donahue
- School of Kinesiology and Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Zhanxin Sha
- School of Kinesiology and Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Stephanie McCoy
- School of Kinesiology and Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
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10
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O'Rourke N, Meens-Miller E, Jeffrey M, Saleem L, Green-Johnson J, Dogra S. Short bouts of walking attenuates the response of IL-8 to prolonged sitting in healthy adults. Eur J Appl Physiol 2023; 123:1271-1281. [PMID: 36781426 DOI: 10.1007/s00421-023-05153-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 02/04/2023] [Indexed: 02/15/2023]
Abstract
PURPOSE Experimental studies have shown that prolonged sitting for 2-8 h can cause changes to vascular and metabolic markers; the response of pro-inflammatory cytokines is relatively unexplored. The purpose of this study is to determine the response of interleukin-8 (IL-8) to prolonged and interrupted sitting. METHODS Healthy participants (n = 24, 21.1 years ± 2.2, 50% female) completed a prolonged sitting session (4 h) and an interrupted sitting session (4 h of sitting with 3 min of walking at 60%HRmax, every 30 min) in random order. Saliva and capillary plasma were collected at the beginning (T1) and at the end of each session (T2). RESULTS Salivary concentrations of IL-8 increased during the prolonged (T1 median: 22.09 pg/mL, T2 median: 86.18 pg/mL; p = < 0.01, ES - 0.55) and interrupted (T1 median: 22.09 pg/mL, T2 median: 51.99 pg/mL; p = 0.021, ES - 0.34) sessions; however, the increase during interrupted sitting was lower (PS median: 134.4%, range: - 43.96 to 1115.69 and IS median: 50.8%, range: - 75.5 to 356.35; p = 0.011, ES - 0.53). In the sub-sample of males, salivary IL-8 did not increase in the interrupted session (T1 median: 22.09, range: 3.496-699.12, and T2 median: 24.96, range: 5.11-533.5, p = > 0.05, ES - 0.16). No significant findings were observed for IL-8 in the plasma. CONCLUSION Prolonged sitting appears to increase concentrations of the pro-inflammatory cytokine IL-8 while interrupting this sitting with short bouts of walking blunts this response. Sex appears to moderate this relationship; however, there appears to be a large amount of individual variability.
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Affiliation(s)
- Nicholas O'Rourke
- Faculty of Health Sciences (Kinesiology), University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1G 0C5, Canada
| | - Emmeline Meens-Miller
- Faculty of Health Sciences (Kinesiology), University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1G 0C5, Canada
| | - Michael Jeffrey
- Faculty of Science (Biology), University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1G 0C5, Canada
| | - Lin Saleem
- Faculty of Science (Biology), University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1G 0C5, Canada
| | - Julia Green-Johnson
- Faculty of Science (Biology), University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1G 0C5, Canada
| | - Shilpa Dogra
- Faculty of Health Sciences (Kinesiology), University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1G 0C5, Canada.
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11
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Bailey DP, Kilbride C, Harper JH, Victor C, Brierley ML, Hewson DJ, Chater AM. The Frail-LESS (LEss Sitting and Sarcopenia in Frail older adults) intervention to improve sarcopenia and maintain independent living via reductions in prolonged sitting: a randomised controlled feasibility trial protocol. Pilot Feasibility Stud 2023; 9:1. [PMID: 36609363 PMCID: PMC9823257 DOI: 10.1186/s40814-022-01225-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 12/01/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Sarcopenia is a progressive and generalised loss of muscle mass and function with advancing age and is a major contributor to frailty. These conditions lead to functional disability, loss of independence, and lower quality of life. Sedentary behaviour is adversely associated with sarcopenia and frailty. Reducing and breaking up sitting should thus be explored as an intervention target for their management. The primary aim of this study, therefore, is to examine the feasibility, safety, and acceptability of conducting a randomised controlled trial (RCT) that evaluates a remotely delivered intervention to improve sarcopenia and independent living via reducing and breaking up sitting in frail older adults. METHODS This mixed-methods randomised controlled feasibility trial will recruit 60 community-dwelling older adults aged ≥ 65 years with very mild or mild frailty. After baseline measures, participants will be randomised to receive the Frail-LESS (LEss Sitting and Sarcopenia in Frail older adults) intervention or serve as controls (usual care) for 6 months. Frail-LESS is a remotely delivered intervention comprising of tailored feedback on sitting, information on the health risks of excess sitting, supported goal setting and action planning, a wearable device that tracks inactive time and provides alerts to move, health coaching, and peer support. Feasibility will be assessed in terms of recruitment, retention and data completion rates. A process evaluation will assess intervention acceptability, safety, and fidelity of the trial. The following measures will be taken at baseline, 3 months, and 6 months: sitting, standing, and stepping using a thigh-worn activPAL4 device, sarcopenia (via hand grip strength, muscle mass, and physical function), mood, wellbeing, and quality of life. DISCUSSION This study will determine the feasibility, safety, and acceptability of evaluating a remote intervention to reduce and break up sitting to support improvements in sarcopenia and independent living in frail older adults. A future definitive RCT to determine intervention effectiveness will be informed by the study findings. TRIAL REGISTRATION ISRCTN, ISRCTN17158017; Registered 6 August 2021, https://www.isrctn.com/ISRCTN17158017.
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Affiliation(s)
- Daniel P. Bailey
- grid.7728.a0000 0001 0724 6933Centre for Physical Activity in Health and Disease, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH UK ,grid.7728.a0000 0001 0724 6933Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Uxbridge, UB8 3PH UK
| | - Cherry Kilbride
- grid.7728.a0000 0001 0724 6933Centre for Physical Activity in Health and Disease, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH UK ,grid.7728.a0000 0001 0724 6933Division of Physiotherapy and Physician Associates, Department of Health Sciences, Brunel University London, Uxbridge, UB8 3PH UK
| | - Jamie H. Harper
- grid.7728.a0000 0001 0724 6933Centre for Physical Activity in Health and Disease, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH UK ,grid.7728.a0000 0001 0724 6933Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Uxbridge, UB8 3PH UK
| | - Christina Victor
- grid.7728.a0000 0001 0724 6933Division of Global Public Health, Brunel University London, Uxbridge, UB8 3PH UK
| | - Marsha L. Brierley
- grid.7728.a0000 0001 0724 6933Centre for Physical Activity in Health and Disease, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH UK
| | - David J. Hewson
- grid.15034.330000 0000 9882 7057Institute for Health Research, University of Bedfordshire, Luton, LU1 3JU UK
| | - Angel M. Chater
- grid.15034.330000 0000 9882 7057Institute for Sport and Physical Activity Research, University of Bedfordshire, Polhill Avenue, Bedford, MK41 9EA UK ,grid.83440.3b0000000121901201Centre for Behaviour Change, University College London, London, WC1E 7HB UK
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12
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Chauntry AJ, Bishop NC, Hamer M, Paine NJ. Frequently Interrupting Prolonged Sitting With Light Body-Weighted Resistance Activity Alters Psychobiological Responses to Acute Psychological Stress: A Randomized Crossover Trial. Ann Behav Med 2022; 57:301-312. [PMID: 36005837 DOI: 10.1093/abm/kaac055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Uninterrupted prolonged sitting and exaggerated psychobiological reactivity to acute psychological stress are associated with increased risk of cardiovascular disease (CVD). Breaking up prolonged sitting with frequent, short bouts of light-intensity physical activity acutely lowers CVD risk markers under resting conditions. PURPOSE To examine whether frequent interruptions to prolonged sitting with body-weighted resistance activity can acutely lower systolic blood pressure (SBP; primary outcome) and other cardiovascular (CV), inflammatory, and cortisol (secondary outcomes) responses to acute psychological stress. METHODS This randomized crossover trial included 17 sedentary participants (9 men; mean ± SD age; 24.0 ± 0.5 years) who completed two conditions: (i) interrupting 4 hr of sitting with 4 min of light body-weighted resistance activity every 30-min (BREAK), and (ii) 4 hr of uninterrupted sitting (SIT). Following the BREAK and SIT intervention windows, CV, inflammatory, and cortisol markers were measured at rest, during stress tasks (8-min Paced Auditory Serial Addition Test [PASAT] and 3-min cold pressor [CP]), and 45-min recovery periods. RESULTS There were main effects of time for CV parameters (SBP, diastolic blood pressure, heart rate, cardiac output, and total peripheral resistance [all p < .001]), inflammatory markers (interleukin-6 [IL-6]), and cortisol (p < .05) in response to stress. Time-by-condition interaction effects revealed that in the BREAK-condition there was lower SBP during immediate recovery from the CP (mean {95% confidence interval [CI]}: 127.2 [121.3, 133.4] vs 133.4 [125.5, 141.7] mmHg; p = .020), higher concentrations of plasma IL-6 45-min post-PASAT (2.70 [1.97, 3.70] vs 1.71 [1.32, 2.22] pg/mL; p = .010), and larger (nonsignificant) salivary cortisol concentrations 8-min post-CP (6.29 [4.60, 8.58] vs 3.97 [3.16, 4.99] nmol/L; p = .079). CONCLUSIONS Interrupting prolonged sitting with frequent bouts of light intensity body-weighted resistance activity alters psychobiological responses to acute psychological stress. Further research should explore the longer-term implications for CVD risk.
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Affiliation(s)
- Aiden J Chauntry
- School of Sport, Exercise and Health Sciences, National Centre for Sport and Exercise Medicine, Loughborough University, Loughborough, Leicestershire, UK.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University Hospitals of Leicester NHS Trust and the University of Leicester, Leicestershire, UK
| | - Nicolette C Bishop
- School of Sport, Exercise and Health Sciences, National Centre for Sport and Exercise Medicine, Loughborough University, Loughborough, Leicestershire, UK.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University Hospitals of Leicester NHS Trust and the University of Leicester, Leicestershire, UK
| | - Mark Hamer
- The Institute of Sport, Exercise and Health, Division of Surgery and Interventional Science, University College London, London, UK
| | - Nicola J Paine
- School of Sport, Exercise and Health Sciences, National Centre for Sport and Exercise Medicine, Loughborough University, Loughborough, Leicestershire, UK.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University Hospitals of Leicester NHS Trust and the University of Leicester, Leicestershire, UK
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13
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Sondang Irawan D, Sinsurin K, Sonsukong A. Alteration of quadriceps muscle activity during functional step tasks after extended sitting session. Knee 2022; 37:20-27. [PMID: 35660535 DOI: 10.1016/j.knee.2022.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 04/02/2022] [Accepted: 05/09/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Prolonged sitting with high knee flexion is a common activity that may affect patellofemoral joint compression and quadriceps length. Exploring the quadriceps activation after sitting may help to explain the mechanism underlying muscle changes and the resulting patellofemoral pain. OBJECTIVES To examine changes in quadriceps activity after prolonged sitting in cross-legged sitting, side-sitting, and sitting on a chair. DESIGN Laboratory observational study. METHOD Thirty healthy women participated and were randomly allocated to three groups of different sitting positions (n = 10/group). Electromyography (EMG) of the vastus medialis (VM), rectus femoris (RF), and vastus lateralis (VL) was performed before and after 15 min after sitting. EMG was conducted during step-up and step-down tests and was reported as %MVIC. The results were analysed using Wilcoxon signed-rank test and Kruskal-Wallis ANOVA. RESULTS VM activity and EMG activity during the step-down test after sitting increased significantly in the cross-legged group (p = 0.01). Sitting postures significantly influenced (p = 0.02) muscle activity changes in the VL and VM during the step-up test. Pairwise comparisons revealed significant differences between the cross-legged sitting and sitting on a chair groups. CONCLUSIONS Prolonged cross-legged sitting and side-sitting caused changes in VM and VL activity during step tasks in healthy young women. After cross-legged sitting, the VM exhibited a significantly higher activity in descending control, and changes in VM and VL activity increased significantly during the step-up task. Increased VM and VL activation possibly controls the patellofemoral joint. Therefore, they may fatigue more easily when many step tasks or squatting exercises are performed.
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Affiliation(s)
- Dimas Sondang Irawan
- Biomechanics and Sports Research Unit, Faculty of Physical Therapy, Mahidol University, Salaya, Thailand
| | - Komsak Sinsurin
- Biomechanics and Sports Research Unit, Faculty of Physical Therapy, Mahidol University, Salaya, Thailand.
| | - Ainthira Sonsukong
- Biomechanics and Sports Research Unit, Faculty of Physical Therapy, Mahidol University, Salaya, Thailand
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14
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Arippa F, Nguyen A, Pau M, Harris-Adamson C. Postural strategies among office workers during a prolonged sitting bout. Appl Ergon 2022; 102:103723. [PMID: 35245695 DOI: 10.1016/j.apergo.2022.103723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 02/18/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Sedentary behavior has increased steadily over prior decades, primarily due to increased computer use at work and at home. The total sedentary time per day has been associated with increased risk of cardiometabolic diseases; increased sitting time at work has been associated with musculoskeletal discomfort particularly in the low back. Office workers spend many hours sitting, thus efforts to increase movement through changes of posture (sit to stand) or moving while sitting have been proposed as ways to mitigate the negative effects of prolonged sitting. Yet, few studies have investigated differences in the movement patterns of office workers while sitting performing their actual work. Therefore, the aim of this study was to characterize movement patterns during a prolonged sitting bout and to determine their association with musculoskeletal pain. Twenty-eight office workers participated in this field study that used a pressure sensitive mat to quantify seat pan pressure (4 regions) and trunk sway parameters over a 2-hour bout of computer work. Data were stratified by breakers who stood up at least once within the 2-hour test and prolongers who remained sitting throughout the test. Overall, there was a decreasing trend in trunk sway parameters (mean COP position, sway path, sway area, sway velocity, maximum displacement, and in-chair movements) over time (p < 0.05), with significant changes in sitting strategies. There were significant differences in trunk sway parameters and perceived musculoskeletal discomfort between breakers and prolongers with breakers having more consistent movement while sitting over the prolonged sitting bout (p < 0.05) and lower discomfort ratings. This may indicate that interrupting prolonged bouts of sitting with short periods of standing can maintain sitting movement patterns and reduce the development of musculoskeletal discomfort. Trunk sway monitoring and promoting periodic standing may be useful tools for maintaining in chair movements that may reduce or prevent the onset of musculoskeletal discomfort during prolonged sitting.
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Affiliation(s)
- Federico Arippa
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Italy.
| | - Athena Nguyen
- School of Public Health, University of California, Berkeley, CA, USA.
| | - Massimiliano Pau
- Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Italy.
| | - Carisa Harris-Adamson
- School of Public Health, University of California, Berkeley, CA, USA; Department of Medicine, University of California, San Francisco, CA, USA.
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Er C, Tan JY, Tan CW, Kaur H, Cheong MA, Lee LH, Ng HJ. "Lockdown-thrombosis"-an unexpected problem of the COVID-19 pandemic? J Thromb Thrombolysis 2022; 54:29-32. [PMID: 35763167 PMCID: PMC9244410 DOI: 10.1007/s11239-022-02648-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/21/2022] [Indexed: 11/26/2022]
Abstract
Seated immobility thromboembolism syndrome (SIT) is the association of prolonged seated immobility with increased risk of venous thromboembolism (VTE). The advent of COVID-19 resulted in implementation of lockdowns to curb its spread. This resulted in compulsory work from home and minimization of outdoor activities. Consequently, this would have likely led to increased prolonged sitting and reduced mobility. Few case reports and studies have observed an increase in VTE incidence during the lockdown period. We likewise performed a clinical audit of our weekly thrombosis clinic cases and revealed three cases of VTE associated with prolonged sitting during Singapore's COVID-19 lockdown. Notably, all had other minor VTE risk factors in addition to prolonged sitting. All cases had intermediate-high risk pulmonary embolism and were given extended anticoagulation. With the pandemic still ongoing, periodic lockdown and quarantine measures may continue to be imposed. While the overall VTE risk conferred by prolonged seated immobility associated with lockdown measures is likely to be small, this risk can be easily mitigated and possibly prevented by simply staying mobile.
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Affiliation(s)
- Chaozer Er
- Department of Hematology, Singapore General Hospital, Bukit Merah, Singapore.
- Department of General Medicine, Woodlands Health, Yishun, Singapore.
| | - Jing Yuan Tan
- Singhealth Internal Medicine Residency, Singapore General Hospital, Bukit Merah, Singapore
| | - Chuen Wen Tan
- Department of Hematology, Singapore General Hospital, Bukit Merah, Singapore
| | - Hartirathpal Kaur
- Department of Hematology, Singapore General Hospital, Bukit Merah, Singapore
| | - May Anne Cheong
- Department of Hematology, Singapore General Hospital, Bukit Merah, Singapore
| | - Lai Heng Lee
- Department of Hematology, Singapore General Hospital, Bukit Merah, Singapore
| | - Heng Joo Ng
- Department of Hematology, Singapore General Hospital, Bukit Merah, Singapore
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Lam WK, Liu RT, Chen B, Huang XZ, Yi J, Wong DWC. Health Risks and Musculoskeletal Problems of Elite Mobile Esports Players: a Cross-Sectional Descriptive Study. Sports Med Open 2022; 8:65. [PMID: 35553264 PMCID: PMC9106768 DOI: 10.1186/s40798-022-00458-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/25/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Mobile-gaming athletes sit in the same posture for prolonged periods, contributing to significant health risks. This study investigated the health profiles, fatigue, pain and complaints, and musculoskeletal problems of full-time mobile-gaming athletes. METHODS A total of 50 elite mobile-gaming athletes were involved in this study. They were the starting lineup players from all ten professional teams competing in a top-tier multiplayer online battle arena tournament. A survey was conducted to evaluate their fatigue patterns, pain levels, and complaints. A descriptive analysis was conducted to evaluate the athletes' health profiles [body mass index (BMI), fat ratio], fatigue, number of complaints, and musculoskeletal problems. The associations of career duration with BMI, fat ratio, and the total number of confirmed injuries were then determined using Spearman's rank correlation test. RESULTS A total of 46% and 44% of the participants felt tired frequently and occasionally, while 34% and 58% experienced eyestrain frequently and occasionally, respectively. More than 30% of the participants reported headache and rhinitis. A longer esports career duration was associated with a reduction in BMI (r = -0.272, p = 0.056). Career duration had no significant association with smoking habits (p = 0.666), alcohol habits (p = 0.655), coffee habits (p = 0.946), rounds of games for which the player could maintain concentration (p = 0.253), ease of eyestrain (p = 0.569), tiredness (p = 0.510), dizziness (p = 0.071), or leg numbness (p = 0.318). CONCLUSION The findings of this study stress the significance of esports injuries and indicate preventive measures for both athletes and recreational players.
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Affiliation(s)
- Wing-Kai Lam
- Sports Information and External Affairs Centre, Hong Kong Sports Institute, Hong Kong, China.
| | - Rui-Tan Liu
- Dr. Chen Sport Training and Rehabilitation Research Center, Beijing, 101111, China
| | - Bob Chen
- Dr. Chen Sport Training and Rehabilitation Research Center, Beijing, 101111, China
| | - Xin-Zhou Huang
- Dr. Chen Sport Training and Rehabilitation Research Center, Beijing, 101111, China
| | - Jie Yi
- Dr. Chen Sport Training and Rehabilitation Research Center, Beijing, 101111, China
| | - Duo Wai-Chi Wong
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China.
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Rubín L, Gába A, Pelclová J, Štefelová N, Jakubec L, Dygrýn J, Hron K. Changes in sedentary behavior patterns during the transition from childhood to adolescence and their association with adiposity: a prospective study based on compositional data analysis. Arch Public Health 2022; 80:1. [PMID: 34983643 PMCID: PMC8725475 DOI: 10.1186/s13690-021-00755-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 12/08/2021] [Indexed: 01/04/2023] Open
Abstract
Background To date, no longitudinal study using a compositional approach has examined sedentary behavior (SB) patterns in relation to adiposity in the pediatric population. Therefore, our aims were to (1) investigate the changes in SB patterns and adiposity from childhood to adolescence, (2) analyze the prospective compositional associations between changes in SB patterns and adiposity, and (3) estimate the changes in adiposity associated with substituting SB with physical activity (PA) of different intensities. Methods The study presents a longitudinal design with a 5-year follow-up. A total of 88 participants (61% girls) were included in the analysis. PA and SB were monitored for seven consecutive days using a hip-worn accelerometer. Adiposity markers (fat mass percentage [FM%], fat mass index [FMI], and visceral adiposity tissue [VAT]) were assessed using the multi-frequency bioimpedance analysis. The prospective associations were examined using compositional data analysis. Results Over the follow-up period, the proportion of time spent in total SB increased by 154.8 min/day (p < 0.001). The increase in total SB was caused mainly by an increase in middle and long sedentary bouts, as these SB periods increased by 79.8 min/day and 62.0 min/day (p < 0.001 for both), respectively. FM%, FMI, and VAT increased by 2.4% points, 1.0 kg/m2, and 31.5 cm2 (p < 0.001 for all), respectively. Relative to the remaining movement behaviors, the increase in time spent in middle sedentary bouts was significantly associated with higher FM% (βilr1 = 0.27, 95% confidence interval [CI]: 0.02 to 0.53) at follow-up. Lower VAT by 3.3% (95% CI: 0.8 to 5.7), 3.8% (95% CI: 0.03 to 7.4), 3.9% (95% CI: 0.8 to 6.9), and 3.8% (95% CI: 0.7 to 6.9) was associated with substituting 15 min/week spent in total SB and in short, middle, and long sedentary bouts, respectively, with an equivalent amount of time spent in vigorous PA. Conclusions This study showed unfavorable changes in SB patterns and adiposity status in the transition from childhood to adolescence. Incorporating high-intensity PA at the expense of SB appears to be an appropriate approach to reduce the risk of excess adiposity in the pediatric population. Supplementary Information The online version contains supplementary material available at 10.1186/s13690-021-00755-5.
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Affiliation(s)
- Lukáš Rubín
- Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic.,Faculty of Science, Humanities and Education, Technical University of Liberec, Liberec, Czech Republic
| | - Aleš Gába
- Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic.
| | - Jana Pelclová
- Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic
| | - Nikola Štefelová
- Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
| | - Lukáš Jakubec
- Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic
| | - Jan Dygrýn
- Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic
| | - Karel Hron
- Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
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ISHIKAWA M, MIURA H, TAMURA Y, MURAKAMI A. Effect of Electrical Muscle Stimulation on Vascular Endothelial Function during Prolonged Sitting. Phys Ther Res 2022; 25:127-133. [PMID: 36819917 PMCID: PMC9910348 DOI: 10.1298/ptr.e10191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 09/07/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE While prolonged sedentary behaviors (SBs) increase cardiovascular disease (CVD) risk, interrupting prolonged sitting (PS) with frequent light exercise reduces arterial functional decline. Skeletal muscle electrical stimulation (EMS) enhances peripheral circulation through passive muscle contraction, suggesting that EMS reduces CVD risk by providing an alternative to active exercise for prolonged SBs. This study aimed to investigate the effects of EMS to skeletal muscles during PS on the endothelial function of the brachial artery (BA). METHODS Study participants included 12 healthy adult men who were subjected to 15 min of supine rest, followed by 1 h of PS only (control [CON] trial), or 20 min of EMS to the lower extremities at 50% of the maximum tolerance intensity during PS (EMS trial). Flow-mediated dilation (FMD) of the BA was measured before and 30 min after PS, and normalized FMD (nFMD) was calculated. RESULTS The nFMD of the CON trial significantly decreased 30 min after PS completion (6.21% ± 1.13%) compared with that before PS (7.26% ± 0.73%), and there was no significant change in the EMS trial before and after PS. The EMS trial showed a significant increase in the nFMD 30 min after PS completion (1.14 ± 0.77) compared with that before PS (0.84 ± 0.43). However, no significant difference was observed in the CON trials. CONCLUSION Passive contraction of the lower extremity muscles by EMS increases BA nFMD, suggesting that prolonged sedentary lower extremity EMS use may reduce the risk of vascular endothelial dysfunction.
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Affiliation(s)
- Mizuki ISHIKAWA
- Department of Physical Therapy, Faculty of Health Science, Osaka Yukioka College of Health Science, Japan
| | - Hajime MIURA
- Laboratory for Applied Physiology, Institutes of Socio-Arts and Sciences, Tokushima University, Japan
| | - Yasuaki TAMURA
- Department of Rehabilitation Medicine, Tokushima Prefecture Naruto Hospital, Japan
| | - Ayako MURAKAMI
- Department of Health and Nutrition, Shikoku University, Japan
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19
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Verloigne M, Van Oeckel V, Brondeel R, Poppe L. Bidirectional associations between sedentary time and sleep duration among 12- to 14-year-old adolescents. BMC Public Health 2021; 21:1673. [PMID: 34521376 PMCID: PMC8440143 DOI: 10.1186/s12889-021-11694-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/29/2021] [Indexed: 11/14/2022] Open
Abstract
Background The aim of this study was to investigate bidirectional associations between (prolonged) sitting time and sleep duration in 12- to 14-year-old adolescents using a between-subjects and within-subjects analyses approach. Methods Observational data were used from 108 adolescents (53% girls; mean age 12.9 (SD 0.7) years) from six schools in Flanders, Belgium. The Axivity AX3 triaxial accelerometer, worn on the thigh, was used to assess daily total sitting time and daily time spent in sedentary bouts of ≥30 min (as a proxy for prolonged sitting time). The Fitbit Charge 3 was used to assess nightly sleep duration. Both monitors were worn on schooldays only (ranging from 4 to 5 days). Linear mixed models were conducted to analyse the associations, resulting in four models. In each model, the independent variable (sleep duration, sitting time or prolonged sitting time) was included as within- as well as between-subjects factor. Results Within-subjects analyses showed that when the adolescents sat more and when the adolescents spent more time sitting in bouts of ≥30 min than they usually did on a given day, they slept less during the following night (p = 0.01 and p = 0.05 (borderline significant), respectively). These associations were not significant in the other direction. Between-subjects analyses showed that adolescents who slept more on average, spent less time sitting (p = 0.006) and less time sitting in bouts of ≥30 min (p = 0.004) compared with adolescents who slept less on average. Conversely, adolescents who spent more time sitting on average and adolescents who spent more time sitting in bouts of ≥30 min on average, slept less (p = 0.02 and p = 0.003, respectively). Conclusions Based on the between-subjects analyses, interventions focusing on reducing or regularly breaking up sitting time could improve adolescents’ sleep duration on a population level, and vice versa. However, the within-subjects association was only found in one direction and suggests that to sleep sufficiently during the night, adolescents might limit and regularly break up their sitting time the preceding day. Trial registration Data have been used from our trial registered at ClinicalTrials.gov (NCT04327414; registered on March 11, 2020). Supplementary Information The online version contains supplementary material available at 10.1186/s12889-021-11694-9.
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Affiliation(s)
- Maïté Verloigne
- Department of Public Health and Primary Care, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium.
| | - Veerle Van Oeckel
- Department of Public Health and Primary Care, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Ruben Brondeel
- Department of Movement and Sports Sciences, Ghent University, Watersportlaan 10, 9000, Ghent, Belgium
| | - Louise Poppe
- Department of Public Health and Primary Care, Ghent University, Corneel Heymanslaan 10, 9000, Ghent, Belgium
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20
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Quan M, Xun P, Wu H, Wang J, Cheng W, Cao M, Zhou T, Huang T, Gao Z, Chen P. Effects of interrupting prolonged sitting on postprandial glycemia and insulin responses: A network meta-analysis. J Sport Health Sci 2021; 10:419-429. [PMID: 33359636 PMCID: PMC8343076 DOI: 10.1016/j.jshs.2020.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/11/2020] [Accepted: 10/30/2020] [Indexed: 06/07/2023]
Abstract
PURPOSE This study aimed to evaluate the effectiveness of physical activity (PA) interrupting prolonged sitting (PS) on postprandial glycemia and insulin responses among adults. METHODS PubMed, EMBASE, Cochrane Library, Web of Science, CINAHL, PsycINFO, and the China National Knowledge Infrastructure databases were searched through September 30, 2020. Randomized controlled trials (RCTs) that examined the effect of all forms of PA interrupting PS on postprandial glycemia and/or insulin responses among adults without chronic diseases were included in this study. The risk of bias of included studies was evaluated based on the Cochrane tool. A network meta-analysis was performed to estimate the summary standardized mean differences (SMDs) with 95% confidence intervals (95%CIs) with random effects. RESULTS Thirty crossover RCTs were included in our review. These RCTs included 9 types of interventions that interrupted PS. When compared to PS by itself, light-intensity PA intermittent interrupting (LPA-INT) PS and moderate-intensity PA intermittent interrupting (MPA-INT) PS significantly lowered postprandial glycemia (SMD = -0.46, 95%CI: -0.70 to -0.21; SMD = -0.69, 95%CI: -1.00 to -0.37, respectively) and significantly reduced postprandial insulin response (SMD = -0.46, 95%CI: -0.66 to -0.26; SMD = -0.47, 95%CI: -0.77 to -0.17, respectively). Results of the clustered ranking plot indicated that MPA-INT was the most effective intervention in lowering postprandial glycemia and insulin responses. CONCLUSION Replacing PS with MPA-INT or LPA-INT has a positive effect in reducing postprandial glycemia and insulin responses, with MPA-INT being the optimal intervention strategy.
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Affiliation(s)
- Minghui Quan
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China.
| | - Pengcheng Xun
- Department of Epidemiology and Biostatistics, School of Public Health-Bloomington, Indiana University, Bloomington, IN 47405, USA
| | - Hua Wu
- Rehabilitation Medicine Center, The Second Affiliated Hospital of Jiaxing University, Jiaxing 314000, China
| | - Jing Wang
- School of Sports Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Cheng
- Department of Endocrinology, Yangpu Hospital Affiliated to Tongji University, Shanghai 200090, China
| | - Meng Cao
- Institute of Physical Education, Normal College, Shenzhen University, Shenzhen 518061, China
| | - Tang Zhou
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China
| | - Tao Huang
- Department of Physical Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zan Gao
- School of Kinesiology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Peijie Chen
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China.
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21
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Bailey DP, Edwardson CL, Pappas Y, Dong F, Hewson DJ, Biddle SJH, Brierley ML, Chater AM. A randomised-controlled feasibility study of the REgulate your SItting Time (RESIT) intervention for reducing sitting time in individuals with type 2 diabetes: study protocol. Pilot Feasibility Stud 2021; 7:76. [PMID: 33741077 PMCID: PMC7977248 DOI: 10.1186/s40814-021-00816-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 03/09/2021] [Indexed: 12/14/2022] Open
Abstract
Background People with type 2 diabetes mellitus (T2DM) generally spend a large amount of time sitting. This increases their risk of cardiovascular disease, premature mortality, diabetes-related complications and mental health problems. There is a paucity of research that has evaluated interventions aimed at reducing and breaking up sitting in people with T2DM. The primary aim of this study is to assess the feasibility of delivering and evaluating a tailored intervention to reduce and break up sitting in ambulatory adults with T2DM. Methods This is a mixed-methods randomised controlled feasibility trial. Participants (n=70) with T2DM aged 18-85 years who sit ≥7 h/day and are able to ambulate independently will be randomly allocated to receive the REgulate your SItting Time (RESIT) intervention or usual care (control group) for 24 weeks. RESIT is a person-focused intervention that delivers a standardised set of behaviour change techniques to the participants, but the mode through which they are delivered can vary depending on the tools selected by each participant. The intervention includes an online education programme, health coach support, and a range of self-selected tools (smartphone apps, computer-prompt software, and wearable devices) that deliver behaviour change techniques such as self-monitoring of sitting and providing prompts to break up sitting. Measures will be taken at baseline, 12 and 24 weeks. Eligibility, recruitment, retention and data completion rates will be used to assess trial feasibility. Sitting, standing and stepping will be measured using a thigh-worn activity monitor. Cardiometabolic health, physical function, psychological well-being, sleep and musculoskeletal symptoms will also be assessed. A process evaluation will be conducted including evaluation of intervention acceptability and fidelity. Discussion This study will identify the feasibility of delivering a tailored intervention to reduce and break up sitting in ambulatory adults with T2DM and evaluating it through a randomised controlled trial (RCT) design. The findings will inform a fully powered RCT to evaluate the effectiveness of the intervention. Trial registration ISRCTN, ISRCTN14832389; Registered 6 August 2020.
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Affiliation(s)
- Daniel P Bailey
- Sedentary Behaviour, Health and Disease Research Group, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK. .,Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK.
| | - Charlotte L Edwardson
- Leicester Lifestyle and Health Research Group, Diabetes Research Centre, University of Leicester, Leicester General Hospital, Leicester, LE5 4PW, UK.,NIHR Leicester Biomedical Research Centre, Leicester General Hospital, Leicester, LE5 4PW, UK
| | - Yannis Pappas
- Institute for Health Research, University of Bedfordshire, Luton, LU1 3JU, UK
| | - Feng Dong
- Department of Computer and Information Sciences, University of Strathclyde, G1 1XH, Glasgow, UK
| | - David J Hewson
- Institute for Health Research, University of Bedfordshire, Luton, LU1 3JU, UK
| | - Stuart J H Biddle
- Centre for Health Research, University of Southern Queensland, Springfield, QLD, 4300, Australia
| | - Marsha L Brierley
- Sedentary Behaviour, Health and Disease Research Group, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK.,Division of Sport, Health and Exercise Sciences, Department of Life Sciences, Brunel University London, Kingston Lane, Uxbridge, UB8 3PH, UK
| | - Angel M Chater
- Institute for Sport and Physical Activity Research, Centre for Health, Wellbeing and Behaviour Change, University of Bedfordshire, Polhill Avenue, Bedford, MK41 9EA, UK
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22
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Decker KP, Feliciano PG, Kimmel MT, Hogwood AC, Weggen JB, Darling AM, Richardson JW, Garten RS. Examining sex differences in sitting-induced microvascular dysfunction: Insight from acute vitamin C supplementation. Microvasc Res 2021; 135:104147. [PMID: 33610562 DOI: 10.1016/j.mvr.2021.104147] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/09/2021] [Accepted: 02/13/2021] [Indexed: 01/22/2023]
Abstract
PURPOSE Lower limb microvascular dysfunction resulting from prolonged sitting (PS) bouts has been revealed to occur independent of sex. Although acute antioxidant supplementation has been reported to blunt conduit artery dysfunction following PS in young males, it is unknown if this protective effect extends to the microvasculature or is relevant in young females, who possess intrinsic vascular protective mechanisms specific to antioxidant defense. Therefore, this study employed an acute antioxidant supplementation to further examine sex differences during PS with a specific focus on microvascular function. METHODS On two separate visits, 14 females (23 ± 3 years) and 12 males (25 ± 4 years) had leg microvascular function (LMVF) assessed (via the passive leg movement technique) before and after 1.5 h of sitting. Prior to each visit, one gram of vitamin C (VC) or placebo (PL) was consumed. RESULTS PS significantly reduced LMVF [PL: (M: -34 ± 20; F: -23 ± 18%; p < 0.01) independent of sex (p = 0.7)], but the VC condition only blunted this reduction in males (VC: -3 ± 20%; p < 0.01), but not females (VC: -18 ± 25%; p = 0.5). CONCLUSION Young males and females reported similar reductions LMVF following PS, but only the young males reported a preservation of LMVF following the VC supplementation. This finding in young females was highlighted by substantial variability in LMVF measures in response to the VC condition that was unrelated to changes in the potential contributors to sitting-induced reductions in LMVF (e.g. lower limb venous pooling, reduced arterial shear rate). NEW AND NOTEWORTHY In this study, we employed an acute Vitamin C (VC) supplementation to examine sex differences in leg microvascular function (LMVF) following a bout of prolonged sitting. This study revealed that prolonged sitting reduced LMVF independent of sex, but only young males reported an attenuation to this lowered LMVF following VC supplementation. The young females revealed substantial variability in sitting-induced changes to LMVF that could not be explained by the potential contributors to sitting-induced reductions in LMVF (e.g. lower limb venous pooling, reduced arterial shear rate).
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Affiliation(s)
- Kevin P Decker
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Patrick G Feliciano
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Morgan T Kimmel
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Austin C Hogwood
- Department of Kinesiology, University of Virginia, Charlottesville, VA, USA
| | - Jennifer B Weggen
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Ashley M Darling
- Department of Kinesiology, University of Texas at Arlington, Arlington, TX, USA
| | - Jacob W Richardson
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Ryan S Garten
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA.
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Gruevski KM, Callaghan JP. The effect of age, prolonged seated work and sex on posture and perceived effort during a lifting task. Appl Ergon 2020; 89:103198. [PMID: 32658771 DOI: 10.1016/j.apergo.2020.103198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
The purpose of this investigation was to determine the effect of prolonged seated work, lift task, age and sex on normalized lumbar angles, thoracic angles, perceived effort and duration of lifts. A total of 17 young and 17 mature participants were recruited with an average (standard deviation) age of 23.8 (5.0) years and 63.7 (3.9) years, respectively. Participants completed 3 different floor to knuckle lifts before and following 90 min of seated work. The lifts included; (i) 7 kg symmetrical, (ii) 4.5 kg symmetrical and (iii) 4.5 kg asymmetrical. Prolonged seated work and age interacted to affect normalized peak lumbar angles (p = 0.0469) where older adults adopted 56(15)% flexion after seated work compared to 67(16)% among younger adults. Older adults took significantly longer to complete the lifting tasks compared to younger adults while age did not affect perceived effort across lifting tasks. Older workers may require age specific interventions given age specific responses.
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Affiliation(s)
- Kristina M Gruevski
- Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, N2L-3G1, Canada
| | - Jack P Callaghan
- Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, N2L-3G1, Canada.
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24
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Alansare AB, Kowalsky RJ, Jones MA, Perdomo SJ, Stoner L, Gibbs BB. The Effects of a Simulated Workday of Prolonged Sitting on Seated versus Supine Blood Pressure and Pulse Wave Velocity in Adults with Overweight/Obesity and Elevated Blood Pressure. J Vasc Res 2020; 57:355-366. [PMID: 32937620 DOI: 10.1159/000510294] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/20/2020] [Indexed: 12/14/2022] Open
Abstract
We evaluated the effects of a simulated workday of prolonged sitting on blood pressure (BP) and pulse wave velocity (PWV) and examined whether posture (seated vs. supine) affected responses. Participants (n = 25) were adults, with overweight/obesity and elevated BP, and performed seated desk work for 7.5 h. BP and PWV were measured in seated and supine postures at baseline (7:15 a.m.), midday (12:05 p.m.), and afternoon (4:45 p.m.). Generalized linear mixed models evaluated the effects of prolonged sitting on BP and PWV within each posture and interactions by posture and sex. In the recommended postures, seated BP and supine carotid-femoral pulse wave velocity (cfPWV) and carotid-ankle pulse wave velocity (caPWV), but not carotid-radial pulse wave velocity (crPWV), significantly increased over the simulated seated workday (all p < 0.05; effect sizes [d] ranged from 0.25 to 0.44). Whilst no posture-by-time interactions were observed (p > 0.05), BP, caPWV, and crPWV were higher when seated versus supine (main effects of posture p < 0.05; d ranged from 0.30 to 1.04). Exploratory analysis revealed that females had greater seated BP responses (p for interaction <0.05); seated PWV and supine BP and PWV responses were similar by sex (p for interaction >0.05). A simulated workday of prolonged sitting increased seated BP and supine cfPWV and caPWV, and posture minimally influenced these responses. These results add to the evidence suggesting a deleterious effect of prolonged sitting on cardiovascular health.
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Affiliation(s)
- Abdullah Bandar Alansare
- Department of Health and Physical Activity, College of Education, University of Pittsburgh, Pittsburgh, Pennsylvania, USA, .,Department of Exercise Physiology, College of Sport Sciences and Physical Activity, King Saud University, Riyadh, Saudi Arabia,
| | - Robert J Kowalsky
- Department of Health and Kinesiology, College of Education and Human Performance, Texas A&M University-Kingsville, Kingsville, Texas, USA
| | - Melissa A Jones
- Department of Health and Physical Activity, College of Education, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Sophy J Perdomo
- Department of Health and Physical Activity, College of Education, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Lee Stoner
- Department of Sport and Exercise, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Bethany Barone Gibbs
- Department of Health and Physical Activity, College of Education, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Kett AR, Sichting F. Sedentary behaviour at work increases muscle stiffness of the back: Why roller massage has potential as an active break intervention. Appl Ergon 2020; 82:102947. [PMID: 31514046 DOI: 10.1016/j.apergo.2019.102947] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 08/27/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
There is increasing evidence that subjects who are exposed to long sitting periods suffer from musculoskeletal discomfort and back pain. The underlying mechanism and effective prevention strategies are still largely unknown. In this study, muscle stiffness of the back was measured in 59 office workers who followed their usual desk work regime for 4.5 h in a sitting posture. The sitting period was either followed by an 8-min roller massage intervention or a controlled standing task. Results showed that muscle stiffness increased significantly after the 4.5 h sitting period. When the sitting period was followed by roller massage, the stiffness values dropped slightly below baseline stiffness. In contrast, the stiffness values remained increased when the sitting period was followed by controlled standing. This study indicates that short-duration tissue manipulation can be an effective active break between prolonged sitting periods to prevent musculoskeletal issues, such as musculoskeletal discomfort and back pain.
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Affiliation(s)
- Alexander Robert Kett
- Department: Human Locomotion, Chemnitz University of Technology, Reichenhainer Straße 31-33, 3. OG, 09126, Chemnitz, Germany.
| | - Freddy Sichting
- Department: Human Locomotion, Chemnitz University of Technology, Reichenhainer Straße 31-33, 3. OG, 09126, Chemnitz, Germany.
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26
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Doroff CE, Langford EL, Ryan GA, Snarr RL. Effects of Active Sitting on Reading and Typing Task Productivity. Int J Exerc Sci 2019; 12:1216-1224. [PMID: 31839855 PMCID: PMC6886608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Increased sedentary behavior and reduced physical activity among children and adults has led to the advent of various active devices to combat these behaviors. Active sitting, consisting of modified chairs or stability balls, allows the body to stay dynamic while seated. While research has evaluated the health benefits of active sitting, minimal research has shown the effects of active sitting on productivity in adult populations. The purpose was to evaluate the effects of various chairs (active versus non-active) on typing and reading task productivity. Twenty adult participants performed typing and reading tasks for 10-minutes while sitting on each of the following: standard chair (SC), stability ball (SB), and active sitting chair (ST). Reading comprehension (RC), words per minute (WPM), accuracy, and errors were measured following each task. Additionally, perceived productivity was measured using a self-reported rating of difficulty scale (1-10). In terms of RC, there was no difference between the chairs (p = 0.16). However, perceived productivity was significantly greater on the SC as compared to SB (p < 0.01) and ST (p < 0.01). For the typing task, no differences were demonstrated for errors (p = 0.87) or accuracy (p = 0.91). However, WPM was significantly greater on SC (38.8 ± 10.5) compared to ST (35.9 ± 9.5) (p = 0.02). For perceived typing productivity, SC and SB demonstrated significantly greater values compared to ST (p < 0.01). Results suggest that various types of active sitting may have a minimal negative effect on workplace performance and perceived productivity.
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Affiliation(s)
- Claire E Doroff
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, USA
| | - Emily L Langford
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, USA
- Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, USA
| | - Greg A Ryan
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, USA
| | - Ronald L Snarr
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, USA
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Wijndaele K, White T, Andersen LB, Bugge A, Kolle E, Northstone K, Wedderkopp N, Ried-Larsen M, Kriemler S, Page AS, Puder JJ, Reilly JJ, Sardinha LB, van Sluijs EMF, Sharp SJ, Brage S, Ekelund U. Substituting prolonged sedentary time and cardiovascular risk in children and youth: a meta-analysis within the International Children's Accelerometry database (ICAD). Int J Behav Nutr Phys Act 2019; 16:96. [PMID: 31672163 PMCID: PMC6822444 DOI: 10.1186/s12966-019-0858-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 10/09/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Evidence on the association between sitting for extended periods (i.e. prolonged sedentary time (PST)) and cardio-metabolic health is inconsistent in children. We aimed to estimate the differences in cardio-metabolic health associated with substituting PST with non-prolonged sedentary time (non-PST), light (LIPA) or moderate-to-vigorous physical activity (MVPA) in children. METHODS Cross-sectional data from 14 studies (7 countries) in the International Children's Accelerometry Database (ICAD, 1998-2009) was included. Accelerometry in 19,502 participants aged 3-18 years, together with covariate and outcome data, was pooled and harmonized. Iso-temporal substitution in linear regression models provided beta coefficients (95%CI) for substitution of 1 h/day PST (sedentary time accumulated in bouts > 15 min) with non-PST, LIPA or MVPA, for each study, which were meta-analysed. RESULTS Modelling substitution of 1 h/day of PST with non-PST suggested reductions in standardized BMI, but estimates were > 7-fold greater for substitution with MVPA (- 0.44 (- 0.62; - 0.26) SD units). Only reallocation by MVPA was beneficial for waist circumference (- 3.07 (- 4.47; - 1.68) cm), systolic blood pressure (- 1.53 (- 2.42; - 0.65) mmHg) and clustered cardio-metabolic risk (- 0.18 (- 0.3; - 0.1) SD units). For HDL-cholesterol and diastolic blood pressure, substitution with LIPA was beneficial; however, substitution with MVPA showed 5-fold stronger effect estimates (HDL-cholesterol: 0.05 (0.01; 0.10) mmol/l); diastolic blood pressure: - 0.81 (- 1.38; - 0.24) mmHg). CONCLUSIONS Replacement of PST with MVPA may be the preferred scenario for behaviour change, given beneficial associations with a wide range of cardio-metabolic risk factors (including adiposity, HDL-cholesterol, blood pressure and clustered cardio-metabolic risk). Effect estimates are clinically relevant (e.g. an estimated reduction in waist circumference of ≈1.5 cm for 30 min/day replacement). Replacement with LIPA could be beneficial for some of these risk factors, however with substantially lower effect estimates.
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Affiliation(s)
- Katrien Wijndaele
- MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Box 285, Addenbrooke's Hospital Hills Road Cambridge, Cambridge, CB2 0QQ, UK.
| | - Thomas White
- MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Box 285, Addenbrooke's Hospital Hills Road Cambridge, Cambridge, CB2 0QQ, UK
| | - Lars Bo Andersen
- Faculty of Teacher Education and Sport, Campus Sogndal, Western Norway University of Applied Sciences, Bergen, Norway
- Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Anna Bugge
- Centre for Research in Childhood Health, Exercise Epidemiology Unit, Department of Sport Sciences and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
- Physiotherapy, University College Copenhagen, Copenhagen, Denmark
| | - Elin Kolle
- Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | | | - Niels Wedderkopp
- Faculty of Teacher Education and Sport, Campus Sogndal, Western Norway University of Applied Sciences, Bergen, Norway
- Centre for Research in Childhood Health, Exercise Epidemiology Unit, Department of Sport Sciences and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - Mathias Ried-Larsen
- Faculty of Teacher Education and Sport, Campus Sogndal, Western Norway University of Applied Sciences, Bergen, Norway
- Centre for Research in Childhood Health, Exercise Epidemiology Unit, Department of Sport Sciences and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - Susi Kriemler
- Institute of Social and Preventive Medicine, University of Zurich, Zürich, Switzerland
| | - Angie S Page
- Centre for Exercise, Nutrition and health Sciences, School for Policy Studies, University of Bristol, Bristol, UK
| | | | - John J Reilly
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, Scotland
| | - Luis B Sardinha
- Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Lisbon, Portugal
| | - Esther M F van Sluijs
- MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Box 285, Addenbrooke's Hospital Hills Road Cambridge, Cambridge, CB2 0QQ, UK
- UKCRC Centre for Diet and Activity Research (CEDAR), University of Cambridge, Cambridge, UK
| | - Stephen J Sharp
- MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Box 285, Addenbrooke's Hospital Hills Road Cambridge, Cambridge, CB2 0QQ, UK
| | - Søren Brage
- MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Box 285, Addenbrooke's Hospital Hills Road Cambridge, Cambridge, CB2 0QQ, UK
| | - Ulf Ekelund
- Department of Sport Medicine, Norwegian School of Sport Sciences, Oslo, Norway
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Triglav J, Howe E, Cheema J, Dube B, Fenske MJ, Strzalkowski N, Bent L. Physiological and cognitive measures during prolonged sitting: Comparisons between a standard and multi-axial office chair. Appl Ergon 2019; 78:176-183. [PMID: 31046949 DOI: 10.1016/j.apergo.2019.03.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 12/17/2018] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
Prolonged sitting, common in many workplaces, reduces blood flow to the lower limb and has negative health outcomes. CoreChair is an active-sitting chair that encourages increased movement to help mitigate these outcomes. Physiological and cognitive measures were recorded in ten subjects over 4 h of sitting in both the CoreChair and a traditional office chair. Sitting in both chairs led to increases in calf circumference (p < 0.0001), reduced tactile sensitivity (p = 0.02), and a cognitive decline in attention (p = 0.035) over time. However, the increase in calf circumference was smaller in the CoreChair at the second (p = 0.017) and third hour (p = 0.012) compared to the traditional chair. Additionally, for the attention task, the traditional chair generated more attention-task errors (p = 0.005), while no changes were observed with the CoreChair (p = 0.13). These findings suggest that during prolonged sitting CoreChair may have modest physiological and cognitive benefits compared to a traditional chair.
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Affiliation(s)
- Joseph Triglav
- University of Guelph, Department of Human Health and Nutritional Science, Guelph, ON, Canada
| | - Erika Howe
- University of Guelph, Department of Human Health and Nutritional Science, Guelph, ON, Canada
| | - Jaskirat Cheema
- University of Guelph, Department of Human Health and Nutritional Science, Guelph, ON, Canada
| | - Blaire Dube
- University of Guelph, Department of Psychology, Guelph, ON, Canada
| | - Mark J Fenske
- University of Guelph, Department of Psychology, Guelph, ON, Canada
| | - Nicholas Strzalkowski
- Mount Royal University, Departments of Biology and General Education, Calgary, AB, Canada
| | - Leah Bent
- University of Guelph, Department of Human Health and Nutritional Science, Guelph, ON, Canada.
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Shin SS, Yoo WG. Effects of lengthwise postural taping for lumbar spine rotation with flexion syndrome: a case report. J Phys Ther Sci 2018; 30:915-916. [PMID: 30034097 PMCID: PMC6047966 DOI: 10.1589/jpts.30.915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/13/2018] [Indexed: 11/24/2022] Open
Abstract
[Purpose] This study investigated the effects of lengthwise postural taping on a patient having lumbar spine rotation with flexion syndrome during prolonged periods of sitting. [Subject and Methods] The subject was a 22-year-old woman who had developed transient low back pain in the lumbo-pelvic region. The subject was asked to sit in a chair during 30 minutes of computer work under three conditions: no taping, extensive lumbo-pelvic region taping, and lengthwise lumbo-pelvic region taping. The center of force and mean peak gluteal pressure were measured using a TekScan system. [Results] With extensive taping, the AP center of force progressively decreased after 10, 20, and 30 min, while the ML center of force differed only slightly by time point. With lengthwise taping, the ML and AP center of force decreased after 20 min. [Conclusion] These findings suggest that lengthwise taping is a useful method for patients having lumbar rotation with flexion syndrome to prevent slumped sitting posture and excessive pressure on the gluteal muscles.
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Affiliation(s)
- Sun-Shil Shin
- Department of Physical Therapy, College of Biomedical
Science and Engineering, Inje University: 197 Inje-ro, Gimhae-si, Gyeongsangnam-do 50834,
Republic of Korea
| | - Won-Gyu Yoo
- Department of Physical Therapy, College of Biomedical
Science and Engineering, Inje University: 197 Inje-ro, Gimhae-si, Gyeongsangnam-do 50834,
Republic of Korea
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30
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Cardoso M, McKinnon C, Viggiani D, Johnson MJ, Callaghan JP, Albert WJ. Biomechanical investigation of prolonged driving in an ergonomically designed truck seat prototype. Ergonomics 2018; 61:367-380. [PMID: 28697645 DOI: 10.1080/00140139.2017.1355070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 07/07/2017] [Indexed: 06/07/2023]
Abstract
A postural evaluation during a prolonged driving task was conducted to determine the ergonomic validity of a new freely adjustable truck seat prototype. Twenty participants were recruited to perform two 2-h simulated driving sessions. Postures were assessed using motion capture, accelerometers and pressure pads. Subjective discomfort was also monitored in 15-min increments using ratings of perceived discomfort (RPD) and the Automotive Seating Discomfort Questionnaire. Participants had a more neutral spine posture during the first hour of the drive and reported lower RPDs while sitting in the prototype. Pairing the gluteal backrest panel with the adjustable seat pan helped reduce the average sitting pressure. The industry-standard truck seat may lead to the development of poor whole body posture, and the proposed ergonomic redesign of a new truck seat helped improve sitting posture and reduce perceived discomfort. Practitioner Summary: A new freely adjustable truck seat prototype was compared to an Industry standard seat to assess hypothesised improvements to sitting posture and discomfort for long haul driving. It was found that the adjustable panels in the prototype helped promote spine posture, reduce sitting pressure and improved discomfort ratings.
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Affiliation(s)
- Michelle Cardoso
- a Faculty of Kinesiology , University of New Brunswick , Fredericton , Canada
| | - Colin McKinnon
- b Faculty of Applied Health Sciences, Department of Kinesiology , University of Waterloo , Waterloo , Canada
| | - Dan Viggiani
- b Faculty of Applied Health Sciences, Department of Kinesiology , University of Waterloo , Waterloo , Canada
| | - Michel J Johnson
- c École de kinésiologie et de loisir, Université de Moncton , Moncton , Canada
| | - Jack P Callaghan
- b Faculty of Applied Health Sciences, Department of Kinesiology , University of Waterloo , Waterloo , Canada
| | - Wayne J Albert
- a Faculty of Kinesiology , University of New Brunswick , Fredericton , Canada
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31
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Bailey DP, Maylor BD, Orton CJ, Zakrzewski-Fruer JK. Effects of breaking up prolonged sitting following low and high glycaemic index breakfast consumption on glucose and insulin concentrations. Eur J Appl Physiol 2017; 117:1299-1307. [PMID: 28500416 PMCID: PMC5486571 DOI: 10.1007/s00421-017-3610-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Accepted: 04/08/2017] [Indexed: 11/25/2022]
Abstract
Purpose Breaking up prolonged sitting can attenuate the postprandial rise in glucose and insulin. Whether such effects are dependent of the glycaemic index (GI) of the consumed carbohydrate is unknown. This study examined the acute effects of breaking up prolonged sitting following a low GI and a high GI breakfast on postprandial glucose and insulin concentrations. Procedures Fourteen adult males aged 22.1 ± 1.2 years completed four, 4 h experimental conditions: high GI breakfast followed by uninterrupted sitting (HGI-SIT), low GI breakfast followed by uninterrupted sitting (LGI-SIT), high GI breakfast followed by 2 min activity breaks every 20 min (HGI-ACT), and low GI breakfast followed by 2 min activity breaks every 20 min (LGI-ACT). Positive incremental area under the curve (iAUC) for glucose and insulin (mean [95% CI]) for each 4 h experimental condition was calculated. Statistical analyses were completed using linear mixed models. Results The sitting × breakfast GI interaction was not significant for glucose positive iAUC (P = 0.119). Glucose positive iAUC (mmol/L 4 h−1) was significantly lower in the activity breaks conditions than the uninterrupted sitting conditions (2.07 [2.24, 2.89] vs. 2.56 [1.74, 2.40], respectively, P = 0.004) and significantly lower in the low GI conditions than the high GI conditions (2.13 [1.80, 2.45] vs. 2.51 [2.18, 2.84], respectively, P = 0.022). Insulin concentrations did not differ between conditions (P ≥ 0.203). Conclusions Breaking up prolonged sitting and lowering breakfast GI independently reduced postprandial glucose responses. This indicates that interrupting prolonged sitting and reducing dietary GI are beneficial approaches for reducing cardiometabolic disease risk.
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Affiliation(s)
- Daniel P Bailey
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Polhill Avenue, Bedford, MK41 9EA, United Kingdom.
| | - Benjamin D Maylor
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Polhill Avenue, Bedford, MK41 9EA, United Kingdom
| | - Charlie J Orton
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Polhill Avenue, Bedford, MK41 9EA, United Kingdom
| | - Julia K Zakrzewski-Fruer
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Polhill Avenue, Bedford, MK41 9EA, United Kingdom
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Pinto AJ, Roschel H, de Sá Pinto AL, Lima FR, Pereira RMR, Silva CA, Bonfá E, Gualano B. Physical inactivity and sedentary behavior: Overlooked risk factors in autoimmune rheumatic diseases? Autoimmun Rev 2017; 16:667-674. [PMID: 28479487 DOI: 10.1016/j.autrev.2017.05.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 03/15/2017] [Indexed: 12/17/2022]
Abstract
This review aims to (1) summarize the estimates of physical inactivity and sedentary behavior in autoimmune rheumatic diseases; (2) describe the relationship between physical (in)activity levels and disease-related outcomes; (3) contextualize the estimates and impact of physical inactivity and sedentary behavior in autoimmune diseases compared to other rheumatic diseases and chronic conditions; and (4) discuss scientific perspectives around this theme and potential clinical interventions to attenuate these preventable risk factors. We compiled evidence to show that estimates of physical inactivity and sedentary behavior in autoimmune rheumatic diseases are generally comparable to other rheumatic diseases as well as to other chronic conditions (e.g., type 2 diabetes, cardiovascular diseases, and obesity), in which a lack of physical activity and excess of sedentary behavior are well-known predictors of morbimortality. In addition, we also showed evidence that both physical inactivity and sedentary behavior may be associated with poor health-related outcomes (e.g., worse disease symptoms and low functionality) in autoimmune rheumatic diseases. Thus, putting into practice interventions to make the patients "sit less and move more", particularly light-intensity activities and/or breaking-up sedentary time, is a simple and prudent therapeutic approach to minimize physical inactivity and sedentary behavior, which are overlooked yet modifiable risk factors in the field of autoimmune rheumatic diseases.
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Affiliation(s)
- Ana Jéssica Pinto
- Applied Physiology and Nutrition Research Group, Universidade de Sao Paulo, Av. Professor Mello Moraes, 65 - Cidade Universitaria, Sao Paulo/SP 05508-030, Brazil; Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
| | - Hamilton Roschel
- Applied Physiology and Nutrition Research Group, Universidade de Sao Paulo, Av. Professor Mello Moraes, 65 - Cidade Universitaria, Sao Paulo/SP 05508-030, Brazil; Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
| | - Ana Lúcia de Sá Pinto
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
| | - Fernanda Rodrigues Lima
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
| | - Rosa Maria Rodrigues Pereira
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
| | - Clovis Artur Silva
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
| | - Eloisa Bonfá
- Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
| | - Bruno Gualano
- Applied Physiology and Nutrition Research Group, Universidade de Sao Paulo, Av. Professor Mello Moraes, 65 - Cidade Universitaria, Sao Paulo/SP 05508-030, Brazil; Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Rua Dr. Ovídio Pires de Campos, 225 - Cerqueira Cesar, Sao Paulo/SP 05403-010, Brazil.
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Sheahan PJ, Diesbourg TL, Fischer SL. The effect of rest break schedule on acute low back pain development in pain and non-pain developers during seated work. Appl Ergon 2016; 53 Pt A:64-70. [PMID: 26674405 DOI: 10.1016/j.apergo.2015.08.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 08/21/2015] [Accepted: 08/27/2015] [Indexed: 06/05/2023]
Abstract
A significant portion of the population (25-50%) is known to develop acute low back pain (LBP) within a bout of prolonged sitting. Previous research has supported the use of frequent rest breaks, from seated office work, in order to reduce self-reported LBP, however, there is limited consensus about the recommended frequency and duration of rest breaks. This may be due to the limited consideration of individual differences in acute LBP development. The purpose of this study was to examine the effect of three different standing rest-break conditions on a group of pain developers (PD) and non-pain developers (NPD) engaged in prolonged seated work. Twenty participants completed four one-hour-long bouts of seated typing: Condition A - no rest; Condition B - 5 min of standing rest every 30 min; Condition C - 2.5 min of standing rest every 15 min; Condition D - 50 s of standing rest every 5 min. Self-reported LBP, self-reported mental fatigue and 30-s samples of EMG were collected every 10 min throughout each session. Eight out of 20 participants (40%) reported LBP during Condition A (classified as PD). Only PD demonstrated clinically relevant increases in LBP across conditions where Conditions B, C, or D provided some relief, but did not restore pain scores to their original level, prior to sitting. PD and NPD developed mental fatigue equally, with Conditions B and D helping to reduce fatigue. No differences in productivity were observed between conditions or groups and no main effects were observed for muscle activity, median power frequency or co-contraction. These data suggests that frequent, short, standing rest breaks may help to reduce symptoms of LBP, however they are only a temporary solution as PD still developed clinically important LBP, even with frequent rest breaks.
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Affiliation(s)
- Peter J Sheahan
- School of Kinesiology and Health Studies, Queen's University, 28 Division Street, Kingston, Ontario K7L 3N6, Canada
| | - Tara L Diesbourg
- School of Kinesiology and Health Studies, Queen's University, 28 Division Street, Kingston, Ontario K7L 3N6, Canada
| | - Steven L Fischer
- School of Kinesiology and Health Studies, Queen's University, 28 Division Street, Kingston, Ontario K7L 3N6, Canada.
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Nairn BC, Azar NR, Drake JDM. Transient pain developers show increased abdominal muscle activity during prolonged sitting. J Electromyogr Kinesiol 2013; 23:1421-7. [PMID: 24135196 DOI: 10.1016/j.jelekin.2013.09.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 08/07/2013] [Accepted: 09/02/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Sitting is a commonly adopted posture during work and prolonged exposures may have detrimental effects. Little attention has been paid to the thoracic spine and/or multiple axes of motion during prolonged sitting. Accordingly, this study examined three-dimensional motion and muscle activity of the trunk during two hours of uninterrupted sitting. METHODS Ten asymptomatic males sat during a simulated office task. Kinematics were analyzed from six segments (Neck, Upper-, Mid-, and Lower-thoracic, Lumbar, and Pelvis) and electromyography was recorded from eight muscles bilaterally. RESULTS Four participants developed transient pain. These participants showed higher average muscle activations in the abdominal muscles. Additionally, the non-pain group showed less lateral bend positional change in the mid-thoracic region compared to the upper- and lower-thoracic regions. Weak-to-moderate positive correlations were also found between rated pain and low back muscle activation. DISCUSSION The results provided further evidence of reduced movement in non-pain developers and altered muscle activation patterns in pain developers. Low-level, prolonged static contractions could lead to an increased risk of injury; and though the increased abdominal activity in the pain developers was not directly associated with increased rated pain scores, this could indicate a pre-disposition to, or enhancer of, transient pain development.
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Affiliation(s)
- Brian C Nairn
- School of Kinesiology & Health Science, Faculty of Health, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
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