RCTHumann = 56 (28 HIIT, 28 control)2026China
Effects of unsupervised campus HIIT on fitness and sleep in sedentary male students: a randomized controlled trial.
Plain-language summary
This study tested whether a six-week, unsupervised high-intensity interval training (HIIT) running program on campus could improve fitness, sleep, and body composition in sedentary male university students. Fifty-six students were split into a HIIT group, which did three weekly sessions of short, intense running bursts with breaks, and a control group that did not. The HIIT group saw big gains in cardiorespiratory fitness and balance, with a possible but not certain boost in sleep quality, while body composition stayed the same. The program worked well in a real-world setting with no supervision, showing it is doable for busy students.
Key findings
- HIIT improved VO2max by 19.24%
- HIIT improved balance by 49.64%
- Sleep quality trended toward improvement but was not statistically significant
- No changes in body composition or other fitness markers
How to analyze the study yourself
- Study type
- Randomized controlled trials are strong for showing cause and effect but may not reflect how people stick to routines outside a study.
- Population
- Sedentary male university students, average age 21.6.
- Funding
- Not reported
- Watch for
- This study found that six weeks of unsupervised HIIT running boosted fitness and balance in sedentary male students, with a possible sleep benefit. If you are tight on time but want to get fitter, short, intense runs may be worth a try.