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J Phys Act Health. 2013 Jul;10(5):676-89. Epub 2012 Oct 4.

Exercise adherence, cardiopulmonary fitness and anthropometric changes improve exercise self-efficacy and health-related quality of life.

Author information

  • 1Dept of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.

Abstract

BACKGROUND:

Regular exercise increases exercise self-efficacy and health-related quality of life (HRQOL); however, the mechanisms are unknown. We examined the associations of exercise adherence and physiological improvements with changes in exercise self-efficacy and HRQOL.

METHODS:

Middle-aged adults (N = 202) were randomized to 12 months aerobic exercise (360 minutes/week) or control. Weight, waist circumference, percent body fat, cardiopulmonary fitness, HRQOL (SF-36), and exercise self-efficacy were assessed at baseline and 12 months. Adherence was measured in minutes/day from activity logs.

RESULTS:

Exercise adherence was associated with reduced bodily pain, improved general health and vitality, and reduced role-emotional scores (P(trend) ≤ 0.05). Increased fitness was associated with improved physical functioning, bodily pain and general health scores (P(trend) ≤ 0.04). Reduced weight and percent body fat were associated with improved physical functioning, general health, and bodily pain scores (P(trend) < 0.05). Decreased waist circumference was associated with improved bodily pain and general health but with reduced role-emotional scores (P(trend) ≤ 0.05). High exercise adherence, increased cardiopulmonary fitness and reduced weight, waist circumference and percent body fat were associated with increased exercise self-efficacy (P(trend) < 0.02).

CONCLUSIONS:

Monitoring adherence and tailoring exercise programs to induce changes in cardiopulmonary fitness and body composition may lead to greater improvements in HRQOL and self-efficacy that could promote exercise maintenance.

PMID:
23036856
[PubMed - indexed for MEDLINE]
PMCID:
PMC3923574
Free PMC Article

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