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Champion RB, Smith LR, Smith J, Hirlav B, Maylor BD, White SL, Bailey DP. Reducing prolonged sedentary time using a treadmill desk acutely improves cardiometabolic risk markers in male and female adults. J Sports Sci 2018; 36:2484-2491. [DOI: 10.1080/02640414.2018.1464744] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rachael B Champion
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK
| | - Lindsey R Smith
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK
| | - Jennifer Smith
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK
| | - Bogdana Hirlav
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK
| | - Benjamin D Maylor
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK
| | - Stephanie L White
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK
| | - Daniel P Bailey
- Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK
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Bhammar DM, Sawyer BJ, Tucker WJ, Gaesser GA. Breaks in Sitting Time: Effects on Continuously Monitored Glucose and Blood Pressure. Med Sci Sports Exerc 2018; 49:2119-2130. [PMID: 28514264 DOI: 10.1249/mss.0000000000001315] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE We examined the effects of interrupting prolonged sitting with multiple 2-min walking breaks or one 30-min continuous walking session on glucose control and ambulatory blood pressure (ABP). METHODS Ten overweight/obese, physically inactive participants (five men; 32 ± 5 yr; BMI, 30.3 ± 4.6 kg·m) participated in this randomized four-trial crossover study, with each trial performed on a separate, simulated workday lasting 9 h: 1) 30 min of continuous moderate-intensity (30-min MOD) walking at 71% ± 4% HRmax; 2) 21 × 2 min bouts of moderate-intensity (2-min MOD) walking at 53% ± 5% HRmax, each performed every 20 min (42 min total); 3) 8 × 2 min bouts of vigorous-intensity (2-min VIG) walking at 79% ± 4% HRmax, each performed every hour (16 min total); 4) 9 h of prolonged sitting (SIT). Participants underwent continuous interstitial glucose monitoring and ABP monitoring during and after the simulated workday spent in the laboratory, with primary data analysis from 12:30 h to 07:00 h the next morning. RESULTS Compared with SIT (5.6 ± 1.1 mmol·L), mean 18.7-h glucose was lower during the 2-min MOD (5.2 ± 1.1 mmol·L) and 2-min VIG (5.4 ± 0.9 mmol·L) trials and mean 18.7-h glucose during the 30-min MOD trial (5.1 ± 0.8 mmol·L) was lower than all other trials (P < 0.001). Postprandial glucose was approximately 7% to 13% lower during all trials compared with SIT (P < 0.001), with 30-min MOD having the greatest effect. Only the 30-min MOD trial was effective in reducing systolic ABP from 12:30 to 07:00 h (119 ± 15 mm Hg) when compared with SIT (122 ± 16 mm Hg; P < 0.05). CONCLUSIONS Replacing sitting with 2-min MOD walking every 20 min or 2 min of vigorous-intensity walking every hour during a simulated workday reduced 18.7 h and postprandial glucose, but only 30-min MOD walking was effective for reducing both glucose and systolic ABP.
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Affiliation(s)
- Dharini M Bhammar
- 1Exercise Science and Health Promotion, Healthy Lifestyles Research Center, Arizona State University, Phoenix, AZ; 2College of Nursing and Health Sciences, School of Health Sciences, Valdosta State University, Valdosta, GA; 3Departments of Kinesiology and Biology, Point Loma Nazarene University, San Diego, CA; and 4Department of Kinesiology, University of Texas at Arlington, Arlington, TX
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Effect of alternating standing and sitting on blood pressure and pulse wave velocity during a simulated workday in adults with overweight/obesity. J Hypertens 2017; 35:2411-2418. [DOI: 10.1097/hjh.0000000000001463] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Mullane SL, Toledo MJL, Rydell SA, Feltes LH, Vuong B, Crespo NC, Pereira MA, Buman MP. Social ecological correlates of workplace sedentary behavior. Int J Behav Nutr Phys Act 2017; 14:117. [PMID: 28859679 PMCID: PMC5580289 DOI: 10.1186/s12966-017-0576-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/23/2017] [Indexed: 12/18/2022] Open
Abstract
Background To identify social ecological correlates of objectively measured workplace sedentary behavior. Methods Participants from 24 worksites - across academic, industrial, and government sectors - wore an activPAL-micro accelerometer for 7-days (Jan-Nov 2016). Work time was segmented using daily logs. Sedentary behavior outcomes included time spent sitting, standing, in light intensity physical activity (LPA, stepping cadence <100 steps/min), and in prolonged sitting bouts (>30 min). Outcomes were standardized to an 8 h work day. Two electronic surveys were completed to derive individual (job type and work engagement), cultural (lunch away from the desk, walking at lunch and face-to-face interaction), physical (personal printer and office type) and organizational (sector) factors. Mixed-model analyses with worksite-level clustering were performed to examine multi-level associations. Secondary analyses examined job type and sector as moderators of these associations. All models were adjusted for age, race/ethnicity and gender. Results Participants (N = 478; 72% female; age: 45.0 ± 11.3 years; 77.8% non-Hispanic white) wore the activPAL-micro for 90.2 ± 15.5% of the reported workday. Walking at lunch was positively associated with LPA (5.0 ± 0.5 min/8 h, P < 0.001). Regular face-to-face interaction was negatively associated with prolonged sitting (−11.3 ± 4.8 min/8 h, P < 0.05). Individuals in private offices sat more (20.1 ± 9.1 min/8 h, P < 0.05), stood less (−21.5 ± 8.8 min/8 h, P < 0.05), and engaged in more prolonged sitting (40.9 ± 11.2 min/8 h, P < 0.001) than those in public office space. These associations were further modified by job type and sector. Conclusions Work-specific individual, cultural, physical and organizational factors are associated with workplace sedentary behavior. Associations vary by job type and sector and should be considered in the design of workplace interventions to reduce sedentary behavior. Trial registration Clinical trial No. NCT02566317; Registered Sept 22nd 2015.
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Affiliation(s)
- Sarah L Mullane
- School of Nutrition and Health Promotion, College of Health Solutions, Arizona State University, 425 North 5th Street, Phoenix, AZ, 85004, USA.
| | - Meynard J L Toledo
- School of Nutrition and Health Promotion, College of Health Solutions, Arizona State University, 425 North 5th Street, Phoenix, AZ, 85004, USA
| | - Sarah A Rydell
- Division of Epidemiology and Community Health, University of Minnesota, 1300 S. 2nd Street, Minneapolis, MN, 55454, USA
| | - Linda H Feltes
- State of Minnesota Management and Budget, 400 Centennial Office Building, Saint Paul, MN, 55155, USA
| | - Brenna Vuong
- Fairview Health Services, 2344 Energy Park Drive, Saint Paul, MN, 55108, USA
| | - Noe C Crespo
- Graduate School of Public Health, San Diego State University, 5500 Campanile Drive, San Diego, CA, 92182, USA
| | - Mark A Pereira
- Division of Epidemiology and Community Health, University of Minnesota, 1300 S. 2nd Street, Minneapolis, MN, 55454, USA
| | - Matthew P Buman
- School of Nutrition and Health Promotion, College of Health Solutions, Arizona State University, 425 North 5th Street, Phoenix, AZ, 85004, USA
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Interrupting prolonged sitting with brief bouts of light walking or simple resistance activities reduces resting blood pressure and plasma noradrenaline in type 2 diabetes. J Hypertens 2017; 34:2376-2382. [PMID: 27512975 DOI: 10.1097/hjh.0000000000001101] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Prolonged sitting is increasingly recognized as a ubiquitous cardiometabolic risk factor, possibly distinct from lack of physical exercise. We examined whether interrupting prolonged sitting with brief bouts of light-intensity activity reduced blood pressure (BP) and plasma noradrenaline in type 2 diabetes (T2D). METHODS In a randomized crossover trial, 24 inactive overweight/obese adults with T2D (14 men; mean ± SD; 62 ± 6 years) consumed standardized meals during 3 × 8 h conditions: uninterrupted sitting (SIT); sitting + half-hourly bouts of walking (3.2 km/h for 3-min) (light-intensity walking); and sitting + half-hourly bouts of simple resistance activities for 3 min (SRAs), each separated by 6-14 days washout. Resting seated BP was measured hourly (mean of three recordings, ≥20-min postactivity). Plasma noradrenaline was measured at 30-min intervals for the first hour after meals and hourly thereafter. RESULTS Compared with SIT, mean resting SBP and DBP were significantly reduced (P < 0.001) for both light-intensity walking (mean ± SEM; -14 ± 1/-8 ± 1 mmHg) and SRA (-16 ± 1/-10 ± 1 mmHg), with a more pronounced effect for SRA (P < 0.05 versus light-intensity walking). Similarly, mean plasma noradrenaline was significantly reduced for both light-intensity walking (-0.3 ± 0.1 nmol/l) and SRA (-0.6 ± 0.1 nmol/l) versus SIT, with SRA lower than light-intensity walking (P < 0.05). Mean resting heart rate was lowered by light-intensity walking (-3 ± 1 bpm; P < 0.05), but not SRA (-1 ± 1 bpm). CONCLUSION Interrupting prolonged sitting with brief bouts of light-intensity walking or SRA reduces resting BP and plasma noradrenaline in adults with T2D, with SRA being more effective. Given the ubiquity of sedentary behaviors and poor adherence to structured exercise, this approach may have important implications for BP management in patients with T2D.
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Keadle SK, Conroy DE, Buman MP, Dunstan DW, Matthews CE. Targeting Reductions in Sitting Time to Increase Physical Activity and Improve Health. Med Sci Sports Exerc 2017; 49:1572-1582. [PMID: 28272267 PMCID: PMC5511092 DOI: 10.1249/mss.0000000000001257] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
: New evidence suggests that reductions in sedentary behavior may increase physical activity and improve health. These findings point to new behavioral targets for intervention and new ways to think about intervening to increase overall physical activity in the population. This report provides a knowledge update reflecting the rapid accumulation of new evidence related to sedentary behavior and health among adults. Recent observational studies suggest that leveraging the time-inverse relationship between sedentary and active behaviors by replacing sitting with standing, light- or moderate-intensity activity can have important health benefits, particularly among less active adults. Clinical studies are providing evidence of the probable physiologic mechanisms underlying these associations, as well as insights into the cardiometabolic impact of breaking up and reducing sedentary behavior. In contrast to the well-established behavioral theories that guide the development and dissemination of evidence-based interventions to increase moderate- to vigorous-intensity physical activity, much less is known about how to reduce sedentary time to increase daily activities. It has become clear that the environmental, social, and individual level determinants for sedentary time are distinct from those linked to the adoption and maintenance of moderate- to vigorous-intensity physical activity. As a result, novel intervention strategies that focus on sitting and lower-intensity activities by leveraging the surrounding environment (e.g., workplace, school, and home) as well as individual-level cues and habits of sedentary behavior are being tested to increase the potency of interventions designed to increase overall physical activity. Herein we summarize the solutions-oriented research across the behavioral research framework, with a focus on highlighting areas of synergy across disciplines and identifying gaps for future research.
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Affiliation(s)
- Sarah K Keadle
- 1Kinesiology Department, California Polytechnic State University, San Luis Obispo, CA; 2Department of Kinesiology, The Pennsylvania State University, University Park, PA; 3Department of Preventive Medicine, Northwestern University, Chicago, IL; 4Exercise Science and Health Promotion Program, School of Nutrition and Health Promotion, Arizona State University, Phoenix, AZ; 5Baker IDI Heart and Diabetes Institute, Melbourne, AUSTRALIA; 6Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, AUSTRALIA; 7School of Public Health, The University of Queensland, Brisbane, AUSTRALIA; 8School of Public Health and Preventive Medicine, Monash University, Melbourne, AUSTRALIA; 9School of Exercise and Nutrition Sciences, Deakin University, Melbourne, AUSTRALIA; 10Department of Medicine, Monash University, Melbourne, AUSTRALIA; 11School of Sport Science, Exercise and Health, The University of Western Australia, Perth, AUSTRALIA; and 12Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
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Tremblay MS, Aubert S, Barnes JD, Saunders TJ, Carson V, Latimer-Cheung AE, Chastin SF, Altenburg TM, Chinapaw MJ. Sedentary Behavior Research Network (SBRN) - Terminology Consensus Project process and outcome. Int J Behav Nutr Phys Act 2017; 14:75. [PMID: 28599680 PMCID: PMC5466781 DOI: 10.1186/s12966-017-0525-8] [Citation(s) in RCA: 1912] [Impact Index Per Article: 273.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 05/16/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The prominence of sedentary behavior research in health science has grown rapidly. With this growth there is increasing urgency for clear, common and accepted terminology and definitions. Such standardization is difficult to achieve, especially across multi-disciplinary researchers, practitioners, and industries. The Sedentary Behavior Research Network (SBRN) undertook a Terminology Consensus Project to address this need. METHOD First, a literature review was completed to identify key terms in sedentary behavior research. These key terms were then reviewed and modified by a Steering Committee formed by SBRN. Next, SBRN members were invited to contribute to this project and interested participants reviewed and provided feedback on the proposed list of terms and draft definitions through an online survey. Finally, a conceptual model and consensus definitions (including caveats and examples for all age groups and functional abilities) were finalized based on the feedback received from the 87 SBRN member participants who responded to the original invitation and survey. RESULTS Consensus definitions for the terms physical inactivity, stationary behavior, sedentary behavior, standing, screen time, non-screen-based sedentary time, sitting, reclining, lying, sedentary behavior pattern, as well as how the terms bouts, breaks, and interruptions should be used in this context are provided. CONCLUSION It is hoped that the definitions resulting from this comprehensive, transparent, and broad-based participatory process will result in standardized terminology that is widely supported and adopted, thereby advancing future research, interventions, policies, and practices related to sedentary behaviors.
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Affiliation(s)
- Mark S. Tremblay
- Healthy Active Living and Obesity Research Group, Children’s Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Ottawa, ON K1H 8L1 Canada
| | - Salomé Aubert
- Healthy Active Living and Obesity Research Group, Children’s Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Ottawa, ON K1H 8L1 Canada
| | - Joel D. Barnes
- Healthy Active Living and Obesity Research Group, Children’s Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Ottawa, ON K1H 8L1 Canada
| | - Travis J. Saunders
- Department of Applied Human Sciences, University of Prince Edward Island, Charlottetown, PEI C1A 4P3 Canada
| | - Valerie Carson
- Faculty of Physical Education and Recreation, University of Alberta, Edmonton, AB T6G 2H9 Canada
| | - Amy E. Latimer-Cheung
- School of Kinesiology and Health Studies, Queen’s University, Kingston, ON K7L 3N6 Canada
| | - Sebastien F.M. Chastin
- Institute of Applied Health Research, Glasgow Caledonian University, Glasgow, Scotland
- Department of Movement and Sport Sciences, Ghent University, Ghent, Belgium
| | - Teatske M. Altenburg
- VU University Medical Center, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Mai J.M. Chinapaw
- VU University Medical Center, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
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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: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [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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Mullane SL, Buman MP, Zeigler ZS, Crespo NC, Gaesser GA. Acute effects on cognitive performance following bouts of standing and light-intensity physical activity in a simulated workplace environment. J Sci Med Sport 2017; 20:489-493. [DOI: 10.1016/j.jsams.2016.09.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 08/19/2016] [Accepted: 09/30/2016] [Indexed: 01/10/2023]
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Edwardson CL, Henson J, Bodicoat DH, Bakrania K, Khunti K, Davies MJ, Yates T. Associations of reallocating sitting time into standing or stepping with glucose, insulin and insulin sensitivity: a cross-sectional analysis of adults at risk of type 2 diabetes. BMJ Open 2017; 7:e014267. [PMID: 28087555 PMCID: PMC5253585 DOI: 10.1136/bmjopen-2016-014267] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVE To quantify associations between sitting time and glucose, insulin and insulin sensitivity by considering reallocation of time into standing or stepping. DESIGN Cross-sectional. SETTING Leicestershire, UK, 2013. PARTICIPANTS Adults aged 30-75 years at high risk of impaired glucose regulation (IGR) or type 2 diabetes. 435 adults (age 66.8±7.4 years; 61.7% male; 89.2% white European) were included. METHODS Participants wore an activPAL3 monitor 24 hours/day for 7 days to capture time spent sitting, standing and stepping. Fasting and 2-hour postchallenge glucose and insulin were assessed; insulin sensitivity was calculated by Homeostasis Model Assessment of Insulin Secretion (HOMA-IS) and Matsuda-Insulin Sensitivity Index (Matsuda-ISI). Isotemporal substitution regression modelling was used to quantify associations of substituting 30 min of waking sitting time (accumulated in prolonged (≥30 min) or short (<30 min) bouts) for standing or stepping on glucose regulation and insulin sensitivity. Interaction terms were fitted to assess whether the associations with measures of glucose regulation and insulin sensitivity was modified by sex or IGR status. RESULTS After adjustment for confounders, including waist circumference, reallocation of prolonged sitting to short sitting time and to standing was associated with 4% lower fasting insulin and 4% higher HOMA-IS; reallocation of prolonged sitting to standing was also associated with a 5% higher Matsuda-ISI. Reallocation to stepping was associated with 5% lower 2-hour glucose, 7% lower fasting insulin, 13% lower 2-hour insulin and a 9% and 16% higher HOMA-IS and Matsuda-ISI, respectively. Reallocation of short sitting time to stepping was associated with 5% and 10% lower 2-hour glucose and 2-hour insulin and 12% higher Matsuda-ISI. Results were not modified by IGR status or sex. CONCLUSIONS Reallocating a small amount of short or prolonged sitting time with standing or stepping may improve 2-hour glucose, fasting and 2-hour insulin and insulin sensitivity. Findings should be confirmed through prospective and intervention research. TRIAL REGISTRATION NUMBER ISRCTN31392913, Post-results.
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Affiliation(s)
- Charlotte L Edwardson
- Diabetes Research Centre, University of Leicester, Leicester, UK
- NIHR Leicester-Loughborough Diet, Lifestyle and Physical Activity Biomedical Research Unit, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester, Leicester, UK
| | - Joe Henson
- Diabetes Research Centre, University of Leicester, Leicester, UK
- NIHR Leicester-Loughborough Diet, Lifestyle and Physical Activity Biomedical Research Unit, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester, Leicester, UK
| | - Danielle H Bodicoat
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester, Leicester, UK
- NIHR Collaboration for Leadership in Applied Health Research and Care East Midlands, Leicester, UK
| | - Kishan Bakrania
- Diabetes Research Centre, University of Leicester, Leicester, UK
- NIHR Leicester-Loughborough Diet, Lifestyle and Physical Activity Biomedical Research Unit, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester, Leicester, UK
- NIHR Collaboration for Leadership in Applied Health Research and Care East Midlands, Leicester, UK
| | - Kamlesh Khunti
- Diabetes Research Centre, University of Leicester, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester, Leicester, UK
- NIHR Collaboration for Leadership in Applied Health Research and Care East Midlands, Leicester, UK
| | - Melanie J Davies
- Diabetes Research Centre, University of Leicester, Leicester, UK
- NIHR Leicester-Loughborough Diet, Lifestyle and Physical Activity Biomedical Research Unit, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester, Leicester, UK
| | - Thomas Yates
- Diabetes Research Centre, University of Leicester, Leicester, UK
- NIHR Leicester-Loughborough Diet, Lifestyle and Physical Activity Biomedical Research Unit, Leicester, UK
- Leicester Diabetes Centre, Leicester General Hospital, University Hospitals of Leicester, Leicester, UK
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CRESPO NOEC, MULLANE SARAHL, ZEIGLER ZACHARYS, BUMAN MATTHEWP, GAESSER GLENNA. Effects of Standing and Light-Intensity Walking and Cycling on 24-h Glucose. Med Sci Sports Exerc 2016; 48:2503-2511. [DOI: 10.1249/mss.0000000000001062] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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