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High-Intensity Circuit Training Plus Sleep Health Intervention for Sleep Improvement: A Randomized Clinical Trial.

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Combining high-intensity circuit training (HICT) and sleep health (SH) interventions significantly improved sleep and cardiometabolic health in women. This combined approach showed synergistic effects, outperforming individual interventions for better sleep quality and health outcomes.

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Area of Science:

  • Cardiovascular Health
  • Sleep Medicine
  • Exercise Physiology

Background:

  • Exercise and sleep interventions can enhance sleep quality.
  • The synergistic effects of combined exercise and sleep interventions on sleep and cardiometabolic health remain largely unknown.
  • Sedentary women with poor sleep health are a key demographic for investigating such interventions.

Purpose of the Study:

  • To evaluate the individual and combined effects of high-intensity circuit training (HICT) and sleep health (SH) interventions.
  • To compare a combined HICT-SH intervention against HICT alone, SH alone, and a control group.
  • To assess impacts on objective/subjective sleep and cardiometabolic health markers.

Main Methods:

  • A 4-arm, single-blind, parallel randomized clinical trial involving 112 sedentary Chinese women (aged 18-30) with poor baseline sleep quality (PSQI >5).
  • Interventions included 8 weeks of laboratory-based HICT (3 sessions/week) and a SH protocol (individualized counseling, digital CBT-I app, weekly visits).
  • Sleep outcomes were measured using the Pittsburgh Sleep Quality Index (PSQI) and actigraphy; cardiometabolic markers included cholesterol and adiponectin.

Main Results:

  • The combined HICT-SH group demonstrated significantly greater improvements in sleep efficiency compared to SH alone (2.75% difference, P=.004).
  • HICT-SH led to greater reductions in wake after sleep onset compared to both HICT (14.51 min, P=.002) and SH (16.26 min, P<.001).
  • All intervention groups showed improvements in sleep efficiency, latency, wake after sleep onset, activity counts, sleep duration, and PSQI scores compared to the control group.

Conclusions:

  • Combined HICT and SH interventions exhibit synergistic effects, yielding superior improvements in objective and subjective sleep outcomes and cardiometabolic health compared to individual interventions.
  • These findings suggest that combined exercise and sleep health strategies can be effective for managing sleep disorders.
  • The study provides evidence supporting the integration of HICT and SH interventions for primary prevention and treatment of sleep disturbances and related health issues.