title: Exercise training improves sleep quality in middle-aged and older adults with sleep problems: a systematic review.
abstract: OBJECTIVE
  Does an exercise training program improve the quality of sleep in middle-aged and older adults with sleep problems?
  
  
  METHODS
  Systematic review with meta-analysis of randomised trials.
  
  
  METHODS
  Adults aged over 40 years with sleep problems.
  
  
  METHODS
  A formal exercise training program consisting of either aerobic or resistance exercise.
  
  
  METHODS
  Self-reported sleep quality or polysomnography.
  
  
  RESULTS
  Six trials were eligible for inclusion and provided data on 305 participants (241 female). Each of the studies examined an exercise training program that consisted of either moderate intensity aerobic exercise or high intensity resistance exercise. The duration of most of the training programs was between 10 and 16 weeks. All of the studies used the self-reported Pittsburgh Sleep Quality Index to assess sleep quality. Compared to the control group, the participants who were randomised to an exercise program had a better global Pittsburgh Sleep Quality Index score, with a standardised mean difference (SMD) of 0.47 (95% CI 0.08 to 0.86). The exercise group also had significantly reduced sleep latency (SMD 0.58, 95% CI 0.08 to 1.08), and medication use (SMD 0.44, 95% CI 0.14 to 0.74). However, the groups did not differ significantly in sleep duration, sleep efficiency, sleep disturbance, or daytime functioning.
  
  
  CONCLUSIONS
  Participation in an exercise training program has moderately positive effects on sleep quality in middle-aged and older adults. Physical exercise could be an alternative or complementary approach to existing therapies for sleep problems.
authors.affiliation: College of Medicine, National Taiwan University, Taipei, Taiwan.
authors.forename: Pei-Yu
authors.initials: PY
authors.lastname: Yang
authors.forename: Ka-Hou
authors.initials: KH
authors.lastname: Ho
authors.forename: Hsi-Chung
authors.initials: HC
authors.lastname: Chen
authors.forename: Meng-Yueh
authors.initials: MY
authors.lastname: Chien
mesh_terms: D000368:Aged; D000529:Complementary Therapies / Q000379:methods*; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D055070:Resistance Training / Q000379:methods*; D012890:Sleep / Q000502:physiology*; D007319:Sleep Initiation and Maintenance Disorders / Q000628:therapy*