Sleep and mood scores improved within a small trial's exercise group
Participants assigned to interval training reported better scores, but the abstract does not quantify whether improvements exceeded those with health education.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Students assigned to HIIT had lower depression, anxiety, and sleep-quality questionnaire scores after the program. The control group showed no statistically significant sleep change. However, comparing significance within each group does not establish a difference between groups, and the abstract does not report a direct estimate of the intervention's advantage over health education.
This abstract-based summary covers a small, brief trial in a specific student population. Questionnaire results and within-group changes cannot establish lasting benefit or changes in sleep architecture.
What researchers found
PSQI sleep-quality questionnaire score within the HIIT group
Baseline versus after 4 weeks of HIIT (p < 0.01). This within-group score change does not estimate the advantage over health education.
What the scores captured
Sleep quality, depression, and anxiety were assessed using questionnaires. The lower sleep score was reported as an improvement. These score changes do not demonstrate remission of a psychiatric condition or directly measure sleep architecture.
Correlation does not explain improvement
Within the HIIT group, sleep quality was correlated with depression and anxiety after the intervention. This shows that the measured scores were related, but it does not establish that changing sleep caused the mood changes.
The original publication
The impact of 4-week high-intensity interval training on mental health and sleep quality in female college students with normal weight obesity: a randomized controlled trial.
Fu J, Zhang W, Xu X et al.
J Transl Med · 2025
- PubMed ID
- 41199311
- Record checked
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