The Study
Exercise intensities and metabolic health: Targeting blood glucose, insulin, and C-peptide levels in adults with prediabetes in the postprandial state
This study watched what happened to people's blood sugar and insulin right after they exercised at different speeds. It found that exercising at 70% effort seemed to help lower blood sugar the most—but it didn't prove that the exercise caused it, because we don't know if the assignment was truly random or fair.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
When people with prediabetes exercise after a meal, one specific heart rate level helps their body use sugar better than other levels.
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 538 / 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.
- 1This drop is big enough to help prevent diabetes — it’s like turning off a sugar spike that could otherwise lead to long-term health problems.
- 2At 70% max heart rate, blood sugar dropped by about 50 mg/dL in 60 minutes, and insulin levels returned almost to normal.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of Taibah University Medical Sciences
Year
2024
Authors
Saman Tauqir, S. S. Shah, Inayat Shah, Saqib Ali
Related Content
Claims (7)
How hard you work out affects how well your body uses insulin and keeps blood sugar steady. More intense exercise improves these systems.
Engaging in consistent physical activity is associated with better control of blood glucose levels in individuals who have a high risk of developing prediabetes.
For adults with prediabetes, exercising at 70% of their maximum heart rate lowers blood sugar after a meal by about 50 mg/dL within an hour, more than exercising at lower intensities.
For adults with prediabetes, exercising on a treadmill for 30 minutes at 70% of their maximum heart rate after eating leads to a larger drop in blood sugar and insulin levels afterward than exercising at lower or higher intensities.
For adults with prediabetes, exercising at 70% of their maximum heart rate leads to a larger drop in C-peptide levels after eating than exercising at higher or lower intensities, indicating a difference in how the body handles insulin production or demand.
For adults with prediabetes, exercising at 70% of their maximum heart rate helps blood insulin levels return to fasting levels more quickly after eating, which suggests the body is using insulin more efficiently.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.