LifestyleExercise

Structured exercise interventions improve overall sleep quality in university students as measured by the PSQI global score

A meta-analysis of 7 randomized controlled trials (701 participants) found that structured exercise significantly reduced the PSQI global score compared to non-exercise controls (MD = -2.43, 95% CI -3.72 to -1.14). However, the prediction interval included the null value, and certainty of evidence was very low, indicating substantial uncertainty in the effect.

Last updated: Aug 18, 2026•0 RCTs•1 Meta-analyses•📖 Read as article →

Evidence Score

Evidence Score49/100
Human RCT☆☆☆☆☆
Meta-analysis★★★☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. Exercise interventions to improve sleep quality in university students: a systematic review and meta-analysis of randomized controlled trials.

observational

Nanjie D, Huo R, Su N, Wang Z, Wei J, Duo J · Frontiers in public health (2026)

Participants: N/A
Duration: Not specified (varied across trials)
Intervention: Structured exercise interventions (e.g., aerobic, resistance, or combined) compared to non-exercise controls
Outcome: PSQI global score and PSQI component scores (sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances)
Effect Size: MD = -2.43 (95% CI -3.72 to -1.14) for PSQI global score
Population: University students with poor sleep quality

Result:

PubMed: 42553631DOI: 10.3389/fpubh.2026.1871771

Mechanism Graph

Exercise may reduce physiological arousal and stress
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Exercise may improve circadian rhythm alignment
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Exercise may increase sleep pressure via energy expenditure
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Result: Improved sleep quality as indicated by lower PSQI scores

Limitations

  • ⚠High heterogeneity (I² = 91.7%) across studies
  • ⚠Prediction interval included null value, suggesting inconsistent effects
  • ⚠Very low to low certainty of evidence due to risk of bias and imprecision
  • ⚠Only 3 trials contributed to component score analyses, limiting power

Frequently Asked Questions

What is the effect of exercise on sleep quality in university students?▼

Exercise significantly reduces PSQI global score by about 2.43 points, but the effect is highly variable and certainty is low.

Which sleep components improve most with exercise?▼

Sleep duration and habitual sleep efficiency showed significant improvements, while sleep latency and disturbances did not reach significance.

Is exercise recommended for improving sleep in students?▼

The evidence suggests potential benefit, but due to low certainty, definitive recommendations require more rigorous trials.

What type of exercise was used in the studies?▼

Structured exercise interventions, but specific types (aerobic, resistance, etc.) were not detailed in the abstract.

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References

  1. 1.Nanjie D, Huo R, Su N, Wang Z, Wei J, Duo J. "Exercise interventions to improve sleep quality in university students: a systematic review and meta-analysis of randomized controlled trials.." Frontiers in public health, 2026. PMID: 42553631 DOI: 10.3389/fpubh.2026.1871771
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.