Afternoon workouts may beat morning sessions for blood sugar control

NCT ID NCT06014684

Completed Knowledge-focused Sponsor: Maastricht University Medical Center Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at whether exercising in the afternoon versus the morning makes a difference in blood sugar levels for people with pre-diabetes. Fifteen overweight adults aged 40-75 completed a 12-week high-intensity interval training program. The main goal was to see if afternoon exercise improves overnight glucose levels and insulin sensitivity more than morning exercise.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: High Intensity Interval Training (HIIT) exercise program
What this could lead to: If successful, this could show that timing exercise in the afternoon is a simple way to better manage blood sugar in people with pre-diabetes.
What could go wrong: This is a very small, completed study with only 15 participants. Results may not apply to everyone, and the effect of exercise timing may be minimal or not reproducible.

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Conditions

The condition(s) this trial relates to.

glucose intolerance Obesity obesity disorder Overweight prediabetes syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

OVERWEIGHT AND OBESITY PRE-DIABETES

Contacts and locations

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Locations

Maastricht University

Maastricht, Limburg, 6229 ER, Netherlands

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