RCTHumann = 202026
Reduced-exertion high-intensity interval training (REHIT) provides limited improvement in post-prandial and 24-hour glycemia in healthy, physically active men.
Plain-language summary
This study looked at whether a quick, low-effort high-intensity interval training routine (REHIT) could improve blood sugar control after meals and over a full day in healthy, active middle-aged men. Twenty men with normal fitness levels did a 10-minute cycling session (REHIT) after breakfast on one day and no exercise on another, while wearing continuous glucose monitors to track their blood sugar. While REHIT slightly sped up how fast blood sugar peaked and dropped after eating, it did not meaningfully lower overall blood sugar levels or variability over 3 hours or 24 hours compared to not exercising.
Key findings
- REHIT led to a shorter time between peak and lowest blood sugar after eating.
- No significant difference in 3-hour post-meal blood sugar levels between REHIT and no exercise.
- No meaningful change in 24-hour average blood sugar or glucose variability with REHIT.
How to analyze the study yourself
- Study type
- Everyone did both conditions, so each man acts as his own comparison and individual differences cannot skew the result. It only covers the short term.
- Population
- Healthy, physically active middle-aged men with normal fitness levels and BMI.
- Funding
- Not reported
- Watch for
- This study found that a quick 10-minute cycling session (REHIT) after breakfast did not meaningfully improve blood sugar control in healthy, active men. If you are looking for ways to manage blood sugar, longer or more intense exercise may be more effective than this minimal routine.