Cited by 1,203Physical Activity and HealthDiabetes, Cardiovascular Risks, and LipoproteinsDiabetes Management and Research

Breaking Up Prolonged Sitting Reduces Postprandial Glucose and Insulin Responses

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Dunstan, David W., Kingwell, Bronwyn A., Larsen, Robyn, Healy, Genevieve N., Cerin, Ester, Hamilton, Marc T., Shaw, Jonathan E., Bertovic, David A. +3 more·2012·Diabetes Care

Abstract

OBJECTIVE: Observational studies show breaking up prolonged sitting has beneficial associations with cardiometabolic risk markers, but intervention studies are required to investigate causality. We examined the acute effects on postprandial glucose and insulin levels of uninterrupted sitting compared with sitting interrupted by brief bouts of light- or moderate-intensity walking. RESEARCH DESIGN AND METHODS: Overweight/obese adults (n = 19), aged 45–65 years, were recruited for a randomized three-period, three-treatment acute crossover trial: 1) uninterrupted sitting; 2) seated with 2-min bouts of light-intensity walking every 20 min; and 3) seated with 2-min bouts of moderate-intensity walking every 20 min. A standardized test drink was provided after an initial 2-h period of uninterrupted sitting. The positive incremental area under curves (iAUC) for glucose and insulin (mean [95% CI]) for the 5 h after the test drink (75 g glucose, 50 g fat) were calculated for the respective treatments. RESULTS: The glucose iAUC (mmol/L) ⋅ h after both activity-break conditions was reduced (light: 5.2 [4.1–6.6]; moderate: 4.9 [3.8–6.1]; both P < 0.01) compared with uninterrupted sitting (6.9 [5.5–8.7]). Insulin iAUC (pmol/L) ⋅ h was also reduced with both activity-break conditions (light: 633.6 [552.4–727.1]; moderate: 637.6 [555.5–731.9], P < 0.0001) compared with uninterrupted sitting (828.6 [722.0–950.9]). CONCLUSIONS: Interrupting sitting time with short bouts of light- or moderate-intensity walking lowers postprandial glucose and insulin levels in overweight/obese adults. This may improve glucose metabolism and potentially be an important public health and clinical intervention strategy for reducing cardiovascular risk.

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  • Frequent standing or walking can reduce total sedentary time and disrupt prolonged sitting, changing physiological pathways and improving cardiometabolic outcomes.

    “Frequent standing or walking can reduce total sedentary time and disrupt prolonged sitting, changing physiological pathways and improving cardiometabolic outcomes [12-14].”

    From Feasibility and Preliminary Efficacy of a “Sit Less” Program Leveraging Fitbit Tracking and Tailored Text Messages in Cardiometabolic Disease: Findings From 2 Parallel Randomized Controlled Trials in Coronary Artery Disease and Type 2 Diabetes (2026) · cites this paper as [14]

    The Abstract reports that frequent two-minute walking breaks during prolonged sitting reduced postprandial glucose and insulin in overweight or obese adults. The Conclusions discuss a possible metabolic mechanism, but say whether brief standing alone protects metabolic health remains undetermined; the study did not establish a change in physiological pathways or broader cardiometabolic outcomes. Page numbers were not supplied in our copy. (LLM, conf=0.88)

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  • Experimental studies confirm that sedentary breaks can improve glucose levels by 2% to 17% and fasting insulin levels by 15%.

    “Experimental studies confirm that sedentary breaks can improve glucose levels by 2% to 17% and fasting insulin levels by 15% [12,14].”

    From Feasibility and Preliminary Efficacy of a “Sit Less” Program Leveraging Fitbit Tracking and Tailored Text Messages in Cardiometabolic Disease: Findings From 2 Parallel Randomized Controlled Trials in Coronary Artery Disease and Type 2 Diabetes (2026) · cites this paper as [14]

    The Results (page not provided) show that activity breaks reduced postprandial glucose and insulin responses in overweight/obese adults. They report glucose reductions of 24.1%–29.6% and an insulin reduction of 23%, not the cited 2%–17% and 15%; the insulin result concerns the response after a test drink, not fasting insulin. (LLM, conf=0.91)

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  • Physical activity that breaks up sedentary behavior can have glycemic benefits.

    “PA to break up sedentary behaviors can also have glycemic benefits.”
  • Brief interruptions of sedentary behavior with physical activity improve postprandial sugars, insulin levels, cholesterol, and waist circumference.

    “Multiple studies have looked at brief interruptions of sedentary behavior with PA, and identified improvements in postprandial sugars, insulin levels, cholesterol, and weight circumference.”
  • Low-intensity or moderate-intensity walking for 2 minutes every 20 minutes of sedentary behavior over a 5-hour intervention improved insulin by 23% less and postprandial glucose by 0.5 or 0.8 mmol/L less.

    “Insulin (23% less) and post-prandial glucose levels (0.5 mmol/L or 0.8 mmol/L less), as measured by glucoses after an oral glucose tolerance test, were also improved in patients who did lowintensity or moderate-intensity walking for 2 minutes every 20 minutes of sedentary behavior over a 5 hour intervention.”

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Authors
Dunstan, D. W., Kingwell, B. A., Larsen, R., Healy, G. N., Cerin, E., Hamilton, M. T., Shaw, J. E., Bertovic, D. A., Zimmet, P. Z., Salmon, J., & Owen, N.
Affiliations
  • Edith Cowan University (AU)
  • Baker Heart and Diabetes Institute (AU)
  • University of Hong Kong (HK)
  • Pennington Biomedical Research Center (US)
  • Deakin University (AU)
Corresponding author
Dunstan, David W.
Venue
Diabetes Care
Published
2012-04-11
Volume
35
Issue
5
Pages
976-983
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2157097177
Cited by
1,203
References
41
Citations by year
2026: 48 · 2025: 43 · 2024: 50 · 2023: 54 · 2022: 73 · 2021: 79 · 2020: 103 · 2019: 108 · 2018: 109 · 2017: 116 · 2016: 111 · 2015: 126 · 2014: 83 · 2013: 68 · 2012: 28
FWCI
65.41
Type
journal article
Language
en
Open access
Locations
  • Diabetes Care (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • UWA Profiles and Research Repository (UWA) (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by-nc-nd)
  • Research Bank (Australian Catholic University) (submittedVersion)
  • Australasian Journal of Paramedicine (submittedVersion)
  • Deakin Research Online (Deakin University) (submittedVersion)
  • eSpace (Curtin University) (submittedVersion)
  • Figshare (submittedVersion, cc-by-nc-nd)
  • Hispana (submittedVersion)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
  • Swinburne figshare (Swinburne University of Technology) (submittedVersion, cc-by-nc-nd)
  • Swinburne figshare (Swinburne University of Technology)
Funders
  • National Heart Foundation of Australia
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (569940)
  • State Government of Victoria
  • Medical Research Council
  • National Health and Medical Research Council (1003960, 540107, 569861, 586623, 569940)
Topics
  • Health Sciences › Medicine › Physiology › Physical Activity and Health
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
Keywords
prolonged sitting, sedentary behavior, walking breaks, postprandial blood glucose, insulin response, glucose metabolism, overweight and obesity, cardiovascular risk
MeSH terms
Aged, Blood Glucose, Female, Humans, Insulin, Male, Middle Aged, Obesity, Walking, Postprandial Period

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