The Study
Breaking Up Prolonged Sitting Reduces Postprandial Glucose and Insulin Responses
This study showed that when people who are overweight sit for a long time and then take short walking breaks, their blood sugar and insulin levels go down after eating. But it only tested this for one day, so we don’t know if it helps over months or years.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Sitting for hours after eating makes your blood sugar and insulin spike higher. Taking short 2-minute walks every 20 minutes helps your body handle the sugar from food better.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 565 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this means even gentle walking during work or TV time can help your body manage sugar better, which may reduce diabetes and heart disease risk over time.
- 2After a big meal, blood sugar stayed 24–30% lower and insulin 23% lower when people took 2-minute walks every 20 minutes during 5 hours of sitting — even if the walks were slow.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Diabetes Care
Year
2012
Authors
D. Dunstan, B. Kingwell, R. Larsen, G. Healy, E. Cerin, M. Hamilton, J. Shaw, D. Bertovic, P. Zimmet, J. Salmon, N. Owen
Related Content
Claims (6)
Sitting for long periods reduces the body's ability to process sugar after eating and raises blood glucose and blood pressure levels.
In overweight or obese adults aged 45–65, taking two-minute walking breaks every 20 minutes during five hours of sitting lowers the amount of glucose and insulin in the blood after a high-carbohydrate, high-fat meal by 23–30%.
In overweight adults aged 45–65, taking two-minute walks at either a slow or moderate pace every 20 minutes during long periods of sitting results in equal reductions in blood glucose and insulin levels after eating.
In overweight adults aged 45–65, taking 28 minutes of light or moderate walking spread over five hours after meals lowers insulin levels after eating and increases the body's response to insulin, which is linked to maintained function of insulin-producing cells in the pancreas.
In overweight adults aged 45–65, one day of sitting continuously results in higher blood glucose and insulin levels after eating compared to normal activity levels, and the size of this increase matches what has been seen in previous studies of prolonged sitting.
After eating a high-carb, high-fat meal, sitting still for five hours leads to a glucose response of about 6.9 mmol/L·h and an insulin response of about 828.6 pmol/L·h in overweight adults aged 45–65.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.