Aerobic exercise improves self-reported sleep and quality of life in older adults with insomnia.
Level 2 - randomized trial
Individual randomized controlled trial
PubMed 20813580 · doi:10.1016/j.sleep.2010.04.014
What was done
Seventeen sedentary older adults aged ≥55 years (mean age 61.6 ± 4.3 years; 16 female) with chronic primary insomnia (≥3 months duration, habitual sleep <6.5 h, PSQI >5) participated in a 16-week randomized controlled trial. Participants were randomized to moderate aerobic physical activity plus sleep hygiene education versus a non-physical activity control plus sleep hygiene education. Outcomes included questionnaires assessing sleep quality (PSQI), daytime sleepiness (ESS), depression (CES-D), and quality of life (SF-36).
What was found
Compared with the control group, the physical activity group achieved significant improvements in global PSQI sleep quality (p < .0001), sleep latency (p = .049), sleep duration (p = .04), daytime dysfunction (p = .027), and sleep efficiency (p = .036). The physical activity group also showed significant improvements relative to baseline in depressive symptoms (p = .044), daytime sleepiness (p = .02), and vitality (p = .017). Absolute baseline and endpoint scores were not reported in the abstract.
Why it matters
This study provides randomized trial evidence that combining moderate aerobic exercise with sleep hygiene improves subjective sleep parameters, mood, and vitality in older adults with chronic insomnia.
Limits
The sample size was very small (n = 17) and almost entirely female (16 of 17), limiting generalizability. Sleep and mood outcomes relied entirely on self-report questionnaires without objective verification such as polysomnography or actigraphy, and numerical values for effect sizes were not provided in the abstract.
Cited by
- supports A clinical trial in sedentary women with insomnia found that acute exercise did not improve sleep and actually exacerbated sleep problems, whereas several months of continuous exercise produced significant sleep improvements.