• JAMA · Jan 1997

    Randomized Controlled Trial Clinical Trial

    Moderate-intensity exercise and self-rated quality of sleep in older adults. A randomized controlled trial.

    • A C King, R F Oman, G S Brassington, D L Bliwise, and W L Haskell.
    • Division of Epidemiology, Department of Health Research and Policy, Stanford University School of Medicine, Calif., USA.
    • JAMA. 1997 Jan 1; 277 (1): 32-7.

    ObjectiveTo determine the effects of moderate-intensity exercise training on self-rated (subjective) sleep quality among healthy, sedentary older adults reporting moderate sleep complaints.DesignRandomized controlled trial of 16 weeks' duration.SettingGeneral community.ParticipantsVolunteer sample of 29 women and 14 men (of 67 eligible subjects) aged 50 to 76 years who were sedentary, free of cardiovascular disease, and reported moderate sleep complaints. No participant was withdrawn for adverse effects.InterventionRandomized to 16 weeks of community-based, moderate-intensity exercise training or to a wait-listed control condition. Exercise consisted primarily of four 30- to 40-minute endurance training sessions (low-impact aerobics; brisk walking) prescribed per week at 60% to 75% of heart rate reserve based on peak treadmill exercise heart rate.Main Outcome MeasurePittsburgh Sleep Quality Index (PSQI).ResultsCompared with controls (C), subjects in the exercise training condition (E) showed significant improvement in the PSQI global sleep score at 16 weeks (baseline and posttest values in mean [SD] for C=8.93 [3.1] and 8.8 [2.6]; baseline and posttest values for E=8.7 [3.0] and 5.4 [2.8]; mean posttest difference between conditions=3.4; P<.001; 95% confidence interval, 1.9-5.4), as well as in the sleep parameters of rated sleep quality, sleep-onset latency (baseline and posttest values for C=26.1 [20.0] and 23.8 [15.3]; for E=28.4 [20.2] and 14.6 [13.0]; net improvement=11.5 minutes), and sleep duration baseline and posttest scores for C=5.8 [1.1] and 6.0 [1.0]; for E=6.0 [1.1] and 6.8 [1.2]; net improvement=42 minutes) assessed via PSQI and sleep diaries (P=.05).ConclusionsOlder adults with moderate sleep complaints can improve self-rated sleep quality by initiating a regular moderate-intensity exercise program.

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