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Sjöros T, Norha J, Johansson R, Laine S, Garthwaite T, Vähä-Ypyä H, Löyttyniemi E, Kalliokoski KK, Sievänen H, Vasankari T, Knuuti J, Heinonen IHA. Tiredness after work associates with less leisure-time physical activity. Sci Rep 2024; 14:7965. [PMID: 38575674 PMCID: PMC10994905 DOI: 10.1038/s41598-024-58775-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 04/03/2024] [Indexed: 04/06/2024] Open
Abstract
Physical activities and sedentary behaviors take place in different contexts. This study aimed to determine if the context, total score, and leisure-time MET-index assessed by the Baecke questionnaire associate with each other or with sedentary behavior and physical activity outcomes from a 4-week accelerometer measurement in physically inactive adults with overweight. The item "After working I am tired" correlated negatively with items related to leisure-time physical activity and sports participation. The total Baecke Score showed weak but significant correlations with accelerometer-measured sedentary behavior, physical activity, daily steps, and mean activity intensity of the day (r = - 0.33, 0.41, 0.35, and 0.41, respectively). The associations strengthened when the Sport Index was omitted from the Score. The leisure-time MET-Index did not correlate with accelerometer-measured sedentary behavior or physical activity. Tiredness after working associated with less self-reported physical activity during leisure time. This suggests that better recovery from work-related stress could increase leisure-time physical activity, or increasing leisure-time physical activity could reduce tiredness after working. Moreover, among self-reportedly inactive adults with overweight, focusing the questionnaire on work and non-sport leisure time instead of total time might give more accurate estimates of sedentary behavior and physical activity when compared to accelerometry.The study is registered at ClinicalTrials.gov (NCT03101228, 05/04/2017).
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Affiliation(s)
- Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland
| | - Jooa Norha
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland
| | - Riitta Johansson
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Eliisa Löyttyniemi
- Department of Biostatistics, University of Turku and Turku University Hospital, Turku, Finland
| | - Kari K Kalliokoski
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland
| | - Ilkka H A Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, P.O. Box 52, 20521, Turku, Finland.
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Norha J, Sjöros T, Garthwaite T, Laine S, Saarenhovi M, Kallio P, Laitinen K, Houttu N, Vähä-Ypyä H, Sievänen H, Löyttyniemi E, Vasankari T, Knuuti J, Kalliokoski KK, Heinonen IHA. Effects of reduced sedentary time on resting, exercise and post-exercise blood pressure in inactive adults with metabolic syndrome - a six-month exploratory RCT. J Hum Hypertens 2024; 38:314-321. [PMID: 38267651 PMCID: PMC11001575 DOI: 10.1038/s41371-024-00894-6] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 01/09/2024] [Accepted: 01/11/2024] [Indexed: 01/26/2024]
Abstract
Evidence on the long-term effects of reducing sedentary behaviour (SB) on blood pressure (BP) is scarce. Therefore, we performed a sub-analysis of the BP effects of a six-month intervention that aimed at reducing SB by 1 h/day and replacing it with non-exercise activities. Sixty-four physically inactive and sedentary adults with metabolic syndrome (58% female, 58 [SD 7] years, BP 143/88 [16/9] mmHg, SB 10 [1] h/day) were randomised into intervention (INT, n = 33) and control (CON, n = 31) groups. Resting BP and BP at each stage during and after a graded maximal bicycle ergometer test were measured before and after the intervention. SB, standing, moderate-to-vigorous physical activity (MVPA), and light physical activity (LPA) were measured in six-second intervals at baseline and during the whole six-month intervention using hip-worn accelerometers. The analyses were adjusted for BP medication status. The intervention resulted in a 40 min/day reduction in SB and concomitant 20 min/day increase in MVPA. Resting systolic BP was lower in the CON group before and after the intervention. No group x time interactions were observed in resting BP or BP during exercise at submaximal or maximal intensities, or during recovery. The changes in LPA and MVPA were inversely correlated with the changes in BP during light-to-moderate intensity exercise. An intervention that resulted in a 40 min/day reduction in SB for six months was not sufficient at influencing BP at rest, during or after exercise in adults with metabolic syndrome. However, successfully increasing LPA or MVPA might lower BP during light-to-moderate-intensity activities.
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Affiliation(s)
- Jooa Norha
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland.
| | - Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Maria Saarenhovi
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | - Petri Kallio
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
- Paavo Nurmi Centre and Unit for Health and Physical Activity, University of Turku, Turku, Finland
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Eliisa Löyttyniemi
- Department of Biostatistics, University of Turku and Turku University Hospital, Turku, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Kari K Kalliokoski
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Ilkka H A Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
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Garthwaite T, Sjöros T, Laine S, Koivumäki M, Vähä-Ypyä H, Verho T, Norha J, Kallio P, Saarenhovi M, Löyttyniemi E, Sievänen H, Houttu N, Laitinen K, Kalliokoski KK, Vasankari T, Knuuti J, Heinonen I. Sedentary time associates detrimentally and physical activity beneficially with metabolic flexibility in adults with metabolic syndrome. Am J Physiol Endocrinol Metab 2024; 326:E503-E514. [PMID: 38416072 DOI: 10.1152/ajpendo.00338.2023] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 02/13/2024] [Accepted: 02/27/2024] [Indexed: 02/29/2024]
Abstract
Metabolic flexibility (MetFlex) describes the ability to respond and adapt to changes in metabolic demand and substrate availability. The relationship between physical (in)activity and MetFlex is unclear. This study aimed to determine whether sedentary time, physical activity (PA), and cardiorespiratory fitness associate with MetFlex. Sedentary time, standing, and PA were measured with accelerometers for 4 weeks in 64 sedentary adults with metabolic syndrome [37 women, 27 men; 58.3 (SD 6.8) years]. Fitness (V̇o2max; mL·kg-1·min-1) was measured with graded maximal cycle ergometry. MetFlex was assessed with indirect calorimetry as the change in respiratory exchange ratio (ΔRER) from fasting to insulin stimulation with hyperinsulinemic-euglycemic clamp and from low-intensity to maximal exercise. Carbohydrate (CHOox) and fat oxidation (FATox) were calculated from respiratory gases. High sedentary time associated with higher fasting RER [β = 0.35 (95% confidence interval: 0.04, 0.67)], impaired insulin-stimulated MetFlex (ΔRER) [β=-0.41 (-0.72, -0.09)], and lower fasting FATox [β=-0.36 (-0.67, -0.04)]. Standing associated with lower fasting RER [β=-0.32 (-0.62, -0.02)]. Higher standing time and steps/day associated with higher fasting FATox [β = 0.31 (0.01, 0.61), and β = 0.26 (0.00, 0.53)]. Light-intensity and total PA associated with better insulin-stimulated MetFlex [β = 0.33 (0.05, 0.61)], and β = 0.33 (0.05, 0.60)]. Higher V̇o2max associated with higher CHOox during maximal exercise [β = 0.81 (0.62, 1.00)], as well as during insulin stimulation [β = 0.43 (0.13, 0.73)]. P values are less than 0.05 for all associations. Sedentary time and PA associate with MetFlex. Reducing sitting and increasing PA of even light intensity might aid in the prevention of metabolic diseases in risk populations through their potential effects on energy metabolism.NEW & NOTEWORTHY High accelerometer-assessed sedentary time associates with metabolic inflexibility measured during hyperinsulinemic-euglycemic clamp in adults with metabolic syndrome, and more light-intensity and total physical activity associate with more metabolic flexibility. Physical activity behaviors may thus play an important role in the regulation of fuel metabolism. This highlights the potential of reduced sedentary time and increased physical activity of any intensity to induce metabolic health benefits and help in disease prevention in risk populations.
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Affiliation(s)
- Taru Garthwaite
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Tanja Sjöros
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Mikko Koivumäki
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Tiina Verho
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Jooa Norha
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Petri Kallio
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
- Paavo Nurmi Centre and Unit for Health and Physical Activity, University of Turku, Turku, Finland
| | - Maria Saarenhovi
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | - Eliisa Löyttyniemi
- Department of Biostatistics, University of Turku and Turku University Hospital, Turku, Finland
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kari K Kalliokoski
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Ilkka Heinonen
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
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Tarvainen S, Wirth G, Juusola G, Hautero O, Kalliokoski K, Sjöros T, Nikulainen V, Taavitsainen J, Hytönen J, Frimodig C, Happonen K, Selander T, Laitinen T, Hakovirta HH, Knuuti J, Laham-Karam N, Hartikainen J, Mäkinen K, Ylä-Herttuala S, Korpisalo P. Critical limb-threatening ischaemia and microvascular transformation: clinical implications. Eur Heart J 2024; 45:255-264. [PMID: 37634134 PMCID: PMC10821383 DOI: 10.1093/eurheartj/ehad562] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 08/08/2023] [Accepted: 08/21/2023] [Indexed: 08/29/2023] Open
Abstract
BACKGROUND AND AIMS Clinical management of critical limb-threatening ischaemia (CLTI) is focused on prevention and treatment of atherosclerotic arterial occlusions. The role of microvascular pathology in disease progression is still largely unspecified and more importantly not utilized for treatment. The aim of this explorative study was to characterize the role of the microvasculature in CLTI pathology. METHODS Clinical high-resolution imaging of CLTI patients (n = 50) and muscle samples from amputated CLTI limbs (n = 40) were used to describe microvascular pathology of CLTI at the level of resting muscle blood flow and microvascular structure, respectively. Furthermore, a chronic, low arterial driving pressure-simulating ischaemia model in rabbits (n = 24) was used together with adenoviral vascular endothelial growth factor A gene transfers to study the effect of microvascular alterations on muscle outcome. RESULTS Resting microvascular blood flow was not depleted but displayed decreased capillary transit time (P < .01) in CLTI muscles. Critical limb-threatening ischaemia muscle microvasculature also exhibited capillary enlargement (P < .001) and further arterialization along worsening of myofibre atrophy and detaching of capillaries from myofibres. Furthermore, CLTI-like capillary transformation was shown to worsen calf muscle force production (P < .05) and tissue outcome (P < .01) under chronic ischaemia in rabbits and in healthy, normal rabbit muscle. CONCLUSIONS These findings depict a progressive, hypoxia-driven transformation of the microvasculature in CLTI muscles, which pathologically alters blood flow dynamics and aggravates tissue damage under low arterial driving pressure. Hypoxia-driven capillary enlargement can be highly important for CLTI outcomes and should therefore be considered in further development of diagnostics and treatment of CLTI.
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Affiliation(s)
- Santeri Tarvainen
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Galina Wirth
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Greta Juusola
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Olli Hautero
- Turku University Hospital, Turku, Finland
- Vaasa Central Hospital, Vaasa, Finland
| | - Kari Kalliokoski
- Turku University Hospital, Turku, Finland
- Turku PET Centre, Turku, Finland
- University of Turku, Turku, Finland
- Åbo Akademi University, Turku, Finland
| | - Tanja Sjöros
- Turku University Hospital, Turku, Finland
- Turku PET Centre, Turku, Finland
- University of Turku, Turku, Finland
- Åbo Akademi University, Turku, Finland
| | | | - Jouni Taavitsainen
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Jarkko Hytönen
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Crister Frimodig
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Krista Happonen
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Tuomas Selander
- Research Services, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Tomi Laitinen
- Imaging Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Harri H Hakovirta
- Turku University Hospital, Turku, Finland
- University of Turku, Turku, Finland
- Satasairaala, Pori, Finland
| | - Juhani Knuuti
- Turku University Hospital, Turku, Finland
- Turku PET Centre, Turku, Finland
- University of Turku, Turku, Finland
- Åbo Akademi University, Turku, Finland
| | - Nihay Laham-Karam
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Juha Hartikainen
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Kimmo Mäkinen
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Seppo Ylä-Herttuala
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Petra Korpisalo
- Heart Center, Kuopio University Hospital, Puijonlaaksontie 2, 70210 Kuopio, Finland
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
- Turku University Hospital, Turku, Finland
- Turku PET Centre, Turku, Finland
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Sjöros T, Laine S, Garthwaite T, Vähä-Ypyä H, Koivumäki M, Eskola O, Löyttyniemi E, Houttu N, Laitinen K, Kalliokoski KK, Sievänen H, Vasankari T, Knuuti J, Heinonen IHA. The effects of a 6-month intervention aimed to reduce sedentary time on skeletal muscle insulin sensitivity: a randomized controlled trial. Am J Physiol Endocrinol Metab 2023; 325:E152-E162. [PMID: 37378623 DOI: 10.1152/ajpendo.00018.2023] [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: 01/17/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023]
Abstract
Sedentary behavior (SB) and physical inactivity associate with impaired insulin sensitivity. We investigated whether an intervention aimed at a 1-h reduction in daily SB during 6 mo would improve insulin sensitivity in the weight-bearing thigh muscles. Forty-four sedentary inactive adults [mean age 58 (SD 7) yr; 43% men] with metabolic syndrome were randomized into intervention and control groups. The individualized behavioral intervention was supported by an interactive accelerometer and a mobile application. SB, measured with hip-worn accelerometers in 6-s intervals throughout the 6-mo intervention, decreased by 51 (95% CI 22-80) min/day and physical activity (PA) increased by 37 (95% CI 18-55) min/day in the intervention group with nonsignificant changes in these outcomes in the control group. Insulin sensitivity in the whole body and in the quadriceps femoris and hamstring muscles, measured with hyperinsulinemic-euglycemic clamp combined with [18F]fluoro-deoxy-glucose PET, did not significantly change during the intervention in either group. However, the changes in hamstring and whole body insulin sensitivity correlated inversely with the change in SB and positively with the changes in moderate-to-vigorous PA and daily steps. In conclusion, these results suggest that the more the participants were able to reduce their SB, the more their individual insulin sensitivity increased in the whole body and in the hamstring muscles but not in quadriceps femoris. However, according to our primary randomized controlled trial results, this kind of behavioral interventions targeted to reduce sedentariness may not be effective in increasing skeletal muscle and whole body insulin sensitivity in people with metabolic syndrome at the population level.NEW & NOTEWORTHY Aiming to reduce daily SB by 1 h/day had no impact on skeletal muscle insulin sensitivity in the weight-bearing thigh muscles. However, successfully reducing SB may increase insulin sensitivity in the postural hamstring muscles. This emphasizes the importance of both reducing SB and increasing moderate-to-vigorous physical activity to improve insulin sensitivity in functionally different muscles of the body and thus induce a more comprehensive change in insulin sensitivity in the whole body.
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Affiliation(s)
- Tanja Sjöros
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Taru Garthwaite
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Mikko Koivumäki
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Olli Eskola
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | | | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kari K Kalliokoski
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
| | - Ilkka H A Heinonen
- Turku PET Centre, University of Turku, Åbo Akademi University, and Turku University Hospital, Turku, Finland
- Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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Norha J, Sjöros T, Garthwaite T, Laine S, Saarenhovi M, Kallio P, Laitinen K, Houttu N, Vähä-Ypyä H, Sievänen H, Löyttyniemi E, Vasankari T, Knuuti J, Kalliokoski KK, Heinonen IHA. Effects of reducing sedentary behavior on cardiorespiratory fitness in adults with metabolic syndrome: A 6-month RCT. Scand J Med Sci Sports 2023. [PMID: 37073456 DOI: 10.1111/sms.14371] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/07/2023] [Accepted: 04/03/2023] [Indexed: 04/20/2023]
Abstract
INTRODUCTION Poor cardiorespiratory fitness (CRF) is associated with adverse health outcomes. Previous observational and cross-sectional studies have suggested that reducing sedentary behavior (SB) might improve CRF. Therefore, we investigated the effects of a 6-month intervention of reducing SB on CRF in 64 sedentary inactive adults with metabolic syndrome in a non-blind randomized controlled trial. MATERIALS AND METHODS In the intervention group (INT, n = 33), the aim was to reduce SB by 1 h/day for 6 months without increasing exercise training. Control group (CON, n = 31) was instructed to maintain their habitual SB and physical activity. Maximal oxygen uptake (VO2max ) was measured by maximal graded bicycle ergometer test with respiratory gas measurements. Physical activity and SB were measured during the whole intervention using accelerometers. RESULTS Reduction in SB did not improve VO2max statistically significantly (group × time p > 0.05). Maximal absolute power output (Wmax ) did not improve significantly but increased in INT compared to CON when scaled to fat free mass (FFM) (at 6 months INT 1.54 [95% CI: 1.41, 1.67] vs. CON 1.45 [1.32, 1.59] Wmax /kgFFM , p = 0.036). Finally, the changes in daily step count correlated positively with the changes in VO2max scaled to body mass and FFM (r = 0.31 and 0.30, respectively, p < 0.05). DISCUSSION Reducing SB without adding exercise training does not seem to improve VO2max in adults with metabolic syndrome. However, succeeding in increasing daily step count may increase VO2max .
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Affiliation(s)
- Jooa Norha
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Maria Saarenhovi
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | - Petri Kallio
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | | | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Kari K Kalliokoski
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Ilkka H A Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
- Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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7
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Garthwaite T, Sjöros T, Laine S, Koivumäki M, Vähä-Ypyä H, Eskola O, Rajander J, Kallio P, Saarenhovi M, Löyttyniemi E, Sievänen H, Houttu N, Laitinen K, Kalliokoski K, Vasankari T, Knuuti J, Heinonen I. Associations of sedentary time, physical activity, and fitness with muscle glucose uptake in adults with metabolic syndrome. Scand J Med Sci Sports 2023; 33:353-358. [PMID: 36517882 DOI: 10.1111/sms.14287] [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: 10/25/2022] [Revised: 11/29/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The objective of the study was to investigate the associations of sedentary time, physical activity, and cardiorespiratory fitness with skeletal muscle glucose uptake (GU). METHODS Sedentary time and physical activity were measured with accelerometers and VO2 max with cycle ergometry in 44 sedentary adults with metabolic syndrome. Thigh muscle GU was determined with [18 F]FDG-PET imaging. RESULTS Sedentary time (β = -0.374), standing (β = 0.376), steps (β = 0.351), and VO2 max (β = 0.598) were associated with muscle GU when adjusted for sex, age, and accelerometer wear time. Adjustment for body fat-% turned all associations non-significant. CONCLUSION Body composition is a more important determinant of muscle GU in this population than sedentary time, physical activity, or fitness.
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Affiliation(s)
- Taru Garthwaite
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Tanja Sjöros
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Mikko Koivumäki
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Olli Eskola
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Johan Rajander
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Petri Kallio
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland.,Paavo Nurmi Centre and Unit for Health and Physical Activity, University of Turku, Turku, Finland
| | - Maria Saarenhovi
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | | | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kari Kalliokoski
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland.,Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland
| | - Ilkka Heinonen
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, Turku, Finland.,Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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8
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Sjöros T, Laine S, Garthwaite T, Vähä-Ypyä H, Löyttyniemi E, Koivumäki M, Houttu N, Laitinen K, Kalliokoski KK, Sievänen H, Vasankari T, Knuuti J, Heinonen IHA. Reducing Sedentary Time and Whole-Body Insulin Sensitivity in Metabolic Syndrome: A 6-Month Randomized Controlled Trial. Med Sci Sports Exerc 2023; 55:342-353. [PMID: 36251378 PMCID: PMC9924963 DOI: 10.1249/mss.0000000000003054] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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] [Indexed: 02/16/2023]
Abstract
PURPOSE This study aimed to investigate whether a reduction in daily sedentary behavior (SB) improves insulin sensitivity in adults with metabolic syndrome in 6 months, without adding intentional exercise training. METHODS Sixty-four sedentary inactive middle-age adults with overweight and metabolic syndrome (mean (SD) age, 58 (7) yr; mean (SD) body mass index, 31.6 (4.3) kg·m -2 ; 27 men) were randomized into intervention and control groups. The 6-month individualized behavioral intervention supported by an interactive accelerometer and a mobile application aimed at reducing daily SB by 1 h compared with baseline. Insulin sensitivity by hyperinsulinemic euglycemic clamp, body composition by air displacement plethysmography, and fasting blood samples were analyzed before and after the intervention. SB and physical activity were measured with hip-worn accelerometers throughout the intervention. RESULTS SB decreased by 40 (95% confidence interval, 17-65) min·d -1 , and moderate-to-vigorous physical activity increased by 20 (95% confidence interval, 11-28) min·d -1 on average in the intervention group with no significant changes in these outcomes in the control group. After 6 months, fasting plasma insulin decreased (~1 mU·L -1 ) in the intervention group compared with the control group (time-group, P = 0.0081), but insulin sensitivity did not change in either group. The changes in body mass or adiposity did not differ between groups. Among all participants, the changes in SB and body mass correlated inversely with the change in insulin sensitivity ( r = -0.31, -0.44; P = 0.025, 0.0005, respectively). CONCLUSIONS An intervention aimed at reducing daily SB resulted in slightly decreased fasting insulin, but had no effects on insulin sensitivity or body adiposity. However, as the change in insulin sensitivity associated with the changes in SB and body mass, multifaceted interventions targeting to weight loss are likely to be beneficial in improving whole-body insulin sensitivity.
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Affiliation(s)
- Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, FINLAND
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, FINLAND
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, FINLAND
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, FINLAND
| | | | - Mikko Koivumäki
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, FINLAND
| | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, FINLAND
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, FINLAND
| | - Kari K Kalliokoski
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, FINLAND
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, FINLAND
| | | | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, FINLAND
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9
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Koivula T, Lempiäinen S, Laine S, Sjöros T, Vähä-Ypyä H, Garthwaite T, Löyttyniemi E, Sievänen H, Vasankari T, Knuuti J, Heinonen IHA. Cross-Sectional Associations of Body Adiposity, Sedentary Behavior, and Physical Activity with Hemoglobin and White Blood Cell Count. Int J Environ Res Public Health 2022; 19:ijerph192114347. [PMID: 36361221 PMCID: PMC9657926 DOI: 10.3390/ijerph192114347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 10/07/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 05/06/2023]
Abstract
BACKGROUND This study examined whether hemoglobin (Hb) and white blood cell count (WBC) associate with body adiposity and other cardiometabolic risk factors, as well as accelerometer-measured sedentary behavior (SB) and physical activity (PA), when adjusted for body mass index (BMI). METHODS The cross-sectional analysis included 144 participants (42 men) with a mean age of 57.0 years and a mean BMI of 31.7 kg/m2. SB and standing time, breaks in sedentary time and PA were measured during four consecutive weeks with hip-worn accelerometers. A fasting blood sample was collected from each participant during the 4-week measurement period and analyzed using Sysmex XN and Cobas 8000 c702 analyzers. Associations of WBC, Hb and other red blood cell markers with cardiometabolic risk factors and physical activity were examined by Pearson's partial correlation coefficient test and with linear mixed regression models. RESULTS In sex- and age-adjusted correlation analyses both BMI and waist circumference correlated positively with Hb, WBC, red blood cell count (RBC), and hematocrit. Hb was also positively correlated with systolic blood pressure, insulin resistance scores, liver enzymes, LDL, and triglyceride levels. Sedentary time correlated positively with WBC, whereas standing time correlated negatively with WBC. Lying time correlated positively with WBC, RBC, hematocrit, and Hb. Regarding SB and PA measures, only the association between lying time and RBC remained significant after adjustment for the BMI. CONCLUSION We conclude that body adiposity, rather than components of SB or PA, associates with Hb levels and WBC, which cluster with general metabolic derangement.
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Affiliation(s)
- Tiia Koivula
- Turku PET Centre, University of Turku and Turku University Hospital, 20520 Turku, Finland
| | - Salla Lempiäinen
- Oncology Clinic, Turku University Hospital, 20520 Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, 20520 Turku, Finland
| | - Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, 20520 Turku, Finland
| | | | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, 20520 Turku, Finland
| | | | | | | | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, 20520 Turku, Finland
| | - Ilkka H. A. Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, 20520 Turku, Finland
- Rydberg Laboratory of Applied Sciences, University of Halmstad, 30118 Halmstad, Sweden
- Correspondence: ; Tel.: +358-2-3138145
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10
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Norha J, Hautala AJ, Sjöros T, Laine S, Garthwaite T, Knuuti J, Löyttyniemi E, Vähä-Ypyä H, Sievänen H, Vasankari T, Heinonen IHA. Standing time and daily proportion of sedentary time are associated with pain-related disability in a one month accelerometer measurement in adults with overweight or obesity. Scand J Pain 2022; 22:317-324. [PMID: 34582633 DOI: 10.1515/sjpain-2021-0108] [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: 06/29/2021] [Accepted: 09/09/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The association between the subjective experience of pain-related disability (PRD) and device-measured physical activity (PA) and sedentary behavior (SB) in overweight and obese adults is not well known. The aim of this study was to investigate the associations of pain markers with accelerometer-measured SB duration and different intensities of PA among physically inactive middle-aged adults with overweight or obesity. METHODS This cross-sectional analysis included 72 subjects (27 men) with mean age of 57.9 (SD 6.7) years and mean BMI of 31.6 (SD 4.1) kg/m2. SB and standing time (ST), breaks in sedentary time, light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA) were measured for four consecutive weeks (mean 25 days, SD 4) with a hip-worn triaxial accelerometer. Headache, musculoskeletal pain, back pain, and PRD were assessed by visual analog scales (VAS) and using the Oswestry disability index (ODI). RAND-36 questionnaire was applied to assess health-related quality of life. The associations were studied by linear models. RESULTS ST was positively and SB proportion was negatively associated with PRD when adjusted for age, sex, BMI, accelerometry duration, MVPA, pain medication use, and general health perceptions assessed by RAND-36. No associations were found between ST and back pain. SB or different PA intensities were not associated with pain experience at specific sites. CONCLUSIONS Longer daily ST, but not LPA or MVPA is associated with higher level of PRD. Correspondingly, higher proportion of SB is associated with lower level of PRD. This suggests that individuals with PRD prefer to stand, possibly to cope with pain. These results may highlight the importance of habitual standing behaviors in coping with experienced PRD in adults with overweight or obesity.
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Affiliation(s)
- Jooa Norha
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Arto J Hautala
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
- Cardiovascular Research Group, Division of Cardiology, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | | | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Ilkka H A Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
- Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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11
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Garthwaite T, Sjöros T, Koivumäki M, Laine S, Vähä-Ypyä H, Saarenhovi M, Kallio P, Löyttyniemi E, Sievänen H, Houttu N, Laitinen K, Kalliokoski K, Vasankari T, Knuuti J, Heinonen I. Corrigendum to “Standing is associated with insulin sensitivity in adults with metabolic syndrome. Journal of Science and Medicine in Sport 24 (2021) 1255–1260”. J Sci Med Sport 2022; 25:541. [DOI: 10.1016/j.jsams.2022.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Haapala EA, Sjöros T, Laine S, Garthwaite T, Kallio P, Saarenhovi M, Vähä-Ypyä H, Löyttyniemi E, Sievänen H, Houttu N, Laitinen K, Kalliokoski K, Knuuti J, Vasankari T, Heinonen IHA. Association between cardiorespiratory fitness and metabolic health in overweight and obese adults. J Sports Med Phys Fitness 2021; 62:1526-1533. [PMID: 34758008 DOI: 10.23736/s0022-4707.21.13234-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Cardiorespiratory fitness (CRF) has been inversely associated with insulin resistance and clustering of cardiometabolic risk factors among overweight and obese individuals. However, most previous studies have scaled CRF by body mass (BM) possibly inflating the association between CRF and cardiometabolic health. We investigated the associations of peak oxygen uptake (V̇ O2peak) and peak power output (Wpeak) scaled either by BM-1, fat free mass (FFM-1), or by allometric methods with individual cardiometabolic risk factors and clustering of cardiometabolic risk factors in 55 overweight or obese adults with metabolic syndrome. METHODS V̇ O2peak and Wpeak were assessed by a maximal cycle ergometer exercise test. FFM was measured by air displacement plethysmograph and glucose, insulin, HbA1c, triglycerides, and total, LDL, and HDL cholesterol from fasting blood samples. HOMA-IR and metabolic syndrome score (MetS) were computed. RESULTS V̇ O2peak and Wpeak scaled by BM-1 were inversely associated with insulin (β=-0.404 to -0.372, 95% CI=-0.704 to -0.048), HOMA-IR (β=-0.442 to -0.440, 95% CI=-0.762 to -0.117), and MetS (β=-0.474 to -0.463, 95% CI's=-0.798 to -0.127). Other measures of CRF were not associated with cardiometabolic risk factors. CONCLUSIONS Our results suggest that using BM-1 as a scaling factor confounds the associations between CRF and cardiometabolic risk in overweight/obese adults with the metabolic syndrome.
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Affiliation(s)
- Eero A Haapala
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland - .,Institute of Biomedicine, School of Medicine, University of Eastern Finland, Kuopio, Finland -
| | - Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Petri Kallio
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | - Maria Saarenhovi
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | | | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kari Kalliokoski
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland.,Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Ilkka H A Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland.,Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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13
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Garthwaite T, Sjöros T, Koivumäki M, Laine S, Vähä-Ypyä H, Saarenhovi M, Kallio P, Löyttyniemi E, Sievänen H, Houttu N, Laitinen K, Kalliokoski K, Vasankari T, Knuuti J, Heinonen I. Standing is associated with insulin sensitivity in adults with metabolic syndrome. J Sci Med Sport 2021; 24:1255-1260. [PMID: 34489177 DOI: 10.1016/j.jsams.2021.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 05/07/2021] [Revised: 07/16/2021] [Accepted: 08/10/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To determine how components of accelerometer-measured sedentary behavior (SB) and physical activity (PA), and fitness are associated with insulin sensitivity in adults with metabolic syndrome. DESIGN Cross-sectional. METHODS Target population was middle-aged (40-65 years) sedentary adults with metabolic syndrome. SB, breaks in SB, standing, and PA were measured for four weeks with hip-worn accelerometers. VO2max (ml/min/kg) was measured with maximal cycle ergometry. Insulin sensitivity was determined by hyperinsulinaemic-euglycaemic clamp (M-value) and fasting blood sampling (HOMA-IR, insulin). Multivariable regression was used for analyses. RESULTS Sixty-four participants (37 women; 58.3 [SD 6.8] years) were included. Participants spent 10.0 (1.0) h sedentary, 1.8 (0.6) h standing, and 2.7 (0.6) h in PA and took 5149 (1825) steps and 29 (8) breaks daily. In sex-, age- and accelerometer wear time-adjusted model SB, standing, steps and VO2max were associated with M-value (β = -0.384; β = 0.400; β = 0.350; β = 0.609, respectively), HOMA-IR (β = 0.420; β = -0.548; β = -0.252; β = -0.449), and insulin (β = 0.433; β = -0.541; β = -0.252; β = -0.453); all p-values < 0.05. Breaks associated only with M-value (β = 0.277). When further adjusted for body fat %, only standing remained significantly associated with HOMA-IR (β = -0.381) and insulin (β = -0.366); significance was maintained even when further adjusted for SB, PA and fitness. Light and moderate-to-vigorous PA were not associated with insulin sensitivity. CONCLUSIONS Standing is associated with insulin sensitivity markers. The association with HOMA-IR and insulin is independent of adiposity, PA, SB and fitness. Further studies are warranted, but these findings encourage replacing sitting with standing for potential improvements in insulin sensitivity in adults at increased type 2 diabetes risk.
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Affiliation(s)
- Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland.
| | - Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Mikko Koivumäki
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Maria Saarenhovi
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland
| | - Petri Kallio
- Department of Clinical Physiology and Nuclear Medicine, University of Turku and Turku University Hospital, Turku, Finland; Paavo Nurmi Centre and Unit for Health and Physical Activity, University of Turku, Turku, Finland
| | | | - Harri Sievänen
- The UKK Institute for Health Promotion Research, Tampere, Finland
| | - Noora Houttu
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kirsi Laitinen
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Kari Kalliokoski
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Tommi Vasankari
- The UKK Institute for Health Promotion Research, Tampere, Finland; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Ilkka Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland; Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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14
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Sjöros T, Vähä-Ypyä H, Laine S, Garthwaite T, Löyttyniemi E, Sievänen H, Kalliokoski KK, Knuuti J, Vasankari T, Heinonen IHA. Influence of the Duration and Timing of Data Collection on Accelerometer-Measured Physical Activity, Sedentary Time and Associated Insulin Resistance. Int J Environ Res Public Health 2021; 18:ijerph18094950. [PMID: 34066552 PMCID: PMC8125504 DOI: 10.3390/ijerph18094950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/28/2021] [Accepted: 05/05/2021] [Indexed: 02/06/2023]
Abstract
Accelerometry is a commonly used method to determine physical activity in clinical studies, but the duration and timing of measurement have seldom been addressed. We aimed to evaluate possible changes in the measured outcomes and associations with insulin resistance during four weeks of accelerometry data collection. This study included 143 participants (median age of 59 (IQR9) years; mean BMI of 30.7 (SD4) kg/m2; 41 men). Sedentary and standing time, breaks in sedentary time, and different intensities of physical activity were measured with hip-worn accelerometers. Differences in the accelerometer-based results between weeks 1, 2, 3 and 4 were analyzed by mixed models, differences during winter and summer by two-way ANOVA, and the associations between insulin resistance and cumulative means of accelerometer results during weeks 1 to 4 by linear models. Mean accelerometry duration was 24 (SD3) days. Sedentary time decreased after three weeks of measurement. More physical activity was measured during summer compared to winter. The associations between insulin resistance and sedentary behavior and light physical activity were non-significant after the first week of measurement, but the associations turned significant in two to three weeks. If the purpose of data collection is to reveal associations between accelerometer-measured outcomes and tenuous health outcomes, such as insulin sensitivity, data collection for at least three weeks may be needed.
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Affiliation(s)
- Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, 20521 Turku, Finland; (S.L.); (T.G.); (K.K.K.); (J.K.); (I.H.A.H.)
- Correspondence: ; Tel.: +358-29-45-02-085
| | - Henri Vähä-Ypyä
- The UKK-Institute for Health Promotion Research, Kaupinpuistonkatu 1, 33500 Tampere, Finland; (H.V.-Y.); (H.S.); (T.V.)
| | - Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, 20521 Turku, Finland; (S.L.); (T.G.); (K.K.K.); (J.K.); (I.H.A.H.)
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, 20521 Turku, Finland; (S.L.); (T.G.); (K.K.K.); (J.K.); (I.H.A.H.)
| | | | - Harri Sievänen
- The UKK-Institute for Health Promotion Research, Kaupinpuistonkatu 1, 33500 Tampere, Finland; (H.V.-Y.); (H.S.); (T.V.)
| | - Kari K. Kalliokoski
- Turku PET Centre, University of Turku and Turku University Hospital, 20521 Turku, Finland; (S.L.); (T.G.); (K.K.K.); (J.K.); (I.H.A.H.)
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, 20521 Turku, Finland; (S.L.); (T.G.); (K.K.K.); (J.K.); (I.H.A.H.)
| | - Tommi Vasankari
- The UKK-Institute for Health Promotion Research, Kaupinpuistonkatu 1, 33500 Tampere, Finland; (H.V.-Y.); (H.S.); (T.V.)
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland
| | - Ilkka H. A. Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, 20521 Turku, Finland; (S.L.); (T.G.); (K.K.K.); (J.K.); (I.H.A.H.)
- Rydberg Laboratory of Applied Sciences, University of Halmstad, 30118 Halmstad, Sweden
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Laine S, Sjöros T, Vähä-Ypyä H, Garthwaite T, Löyttyniemi E, Sievänen H, Vasankari T, Knuuti J, Heinonen IHA. Body Adiposity, But Not Elements of Objectively Measured Sedentary Behavior or Physical Activity, Is Associated With Circulating Liver Enzymes in Adults With Overweight and Obesity. Front Endocrinol (Lausanne) 2021; 12:655756. [PMID: 33959099 PMCID: PMC8095079 DOI: 10.3389/fendo.2021.655756] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/29/2021] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE We studied the associations between accelerometer-measured sedentary behavior (SB) and habitual physical activity (PA) as well as markers of body adiposity and other cardiometabolic risk factors with liver enzymes alanine aminotransferase (ALT), aspartate aminotransferase (AST) and γ-glutamyltransferase (GGT). METHODS A total of 144 middle-aged adults (mean age 57 (SD 6.5) years) with overweight or obesity (mean body mass index [BMI] 31.8 [SD 3.9] kg/m2) participated. Different components of SB (sitting, lying) and PA (standing, breaks in SB, daily steps, light PA, moderate-to-vigorous PA and total PA) were measured with validated hip-worn accelerometers for four consecutive weeks (mean 25 days, [SD 4]). Fasting venous blood samples were analysed using standard assays. The associations were examined with Pearson's partial correlation coefficient test and linear mixed model. RESULTS Among 102 women and 42 men accelerometer measured SB or the elements of PA were not associated with circulating liver enzymes. When adjusted for age and sex, liver enzymes correlated positively with BMI and waist circumference (WC) (ALT r=0.34, p<0.0001, r=0.41, < 0.0001, AST r=0.17, p=0.049, r=0.26, p=0.002, GGT r=0.29, p=0.0005, r=0.32, p < 0.0001, respectively). SB proportion associated positively with BMI (r=0.21, p=0.008) and WC (r=0.27, p=0.001). Components of PA associated negatively with BMI (MVPA r=-0.23, p=0.005, daily steps r=-0.30, p<0.0001 and breaks in sedentary time r=-0.32, p<0.0001), as well as with WC (breaks in SB r=-0.35, p<0.0001, MVPA r=-0.26, p=0.002, daily steps r=-0.31, p<0.0001, standing time r=-0.27, p=0.001). Liver enzymes associated positively with common cardiometabolic markers such as resting heart rate (ALT; β=0.17, p=0.03, AST; β=0.25, p=0.002, GGT; β=0.23, p=0.004) and systolic/diastolic blood pressure (ALT β=0.20, p=0.01, β=0.22, p=0.005, AST (only diastolic) β=0.23, p=0.006, GGT β=0.19, p=0.02, = 0.23, p=0.004, respectively), fasting insulin (ALT β=0.41, p<0.0001, AST β=0.36, p=0.0003, GGT β=0.20, p=0.04) and insulin resistance index (ALT β=0.42, p<0.0001, AST β=0.36, p=0.0003, GGT β=0.21, p=0.03), even after adjustment with BMI. CONCLUSIONS Liver enzymes correlate with body adiposity and appear to cluster with other common cardiometabolic risk factors, even independently of body adiposity. SB and PA appear not to be essential in modulating the levels of circulating liver enzymes.
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Affiliation(s)
- Saara Laine
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
- *Correspondence: Saara Laine,
| | - Tanja Sjöros
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Henri Vähä-Ypyä
- The UKK-Institute for Health Promotion Research, Tampere, Finland
| | - Taru Garthwaite
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | | | - Harri Sievänen
- The UKK-Institute for Health Promotion Research, Tampere, Finland
| | - Tommi Vasankari
- The UKK-Institute for Health Promotion Research, Tampere, Finland
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | - Ilkka H. A. Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
- Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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Sjöros T, Saunavaara V, Löyttyniemi E, Koivumäki M, Heinonen IHA, Eskelinen J, Virtanen KA, Hannukainen JC, Kalliokoski KK. Intramyocellular lipid accumulation after sprint interval and moderate-intensity continuous training in healthy and diabetic subjects. Physiol Rep 2019; 7:e13980. [PMID: 30740933 PMCID: PMC6369060 DOI: 10.14814/phy2.13980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 12/20/2018] [Accepted: 12/23/2018] [Indexed: 11/24/2022] Open
Abstract
The effects of sprint interval training (SIT) on intramyocellular (IMCL) and extramyocellular (EMCL) lipid accumulation are unclear. We tested the effects of SIT and moderate-intensity continuous training (MICT) on IMCL and EMCL accumulation in a randomized controlled setting in two different study populations; healthy untrained men (n 28) and subjects with type 2 diabetes (T2D) or prediabetes (n 26). Proton magnetic resonance spectroscopy (1 H MRS) was used to determine IMCL and EMCL in the Tibialis anterior muscle (TA) before and after a 2-week exercise period. The exercise period comprised six sessions of SIT or MICT cycling on a cycle ergometer. IMCL increased after SIT compared to MICT (P = 0.042) in both healthy and T2D/prediabetic subjects. On EMCL the training intervention had no significant effect. In conclusion, IMCL serves as an important energy depot during exercise and can be extended by high intensity exercise. The effects of high intensity interval exercise on IMCL seem to be similar regardless of insulin sensitivity or the presence of T2D.
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Affiliation(s)
| | - Virva Saunavaara
- Turku PET CentreTurku University HospitalTurkuFinland
- Department of Medical PhysicsDivision of Medical ImagingTurku University HospitalTurkuFinland
| | | | | | | | | | - Kirsi A. Virtanen
- Turku PET CentreUniversity of TurkuTurkuFinland
- Turku PET CentreTurku University HospitalTurkuFinland
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