Document Detail

Effect of Single-Set Resistance Training on Quality of Life in COPD Patients Enrolled in Pulmonary Rehabilitation.
MedLine Citation:
PMID:  22781136     Owner:  NLM     Status:  Publisher    
BACKGROUND: Single-set resistance training (SSRT) improves strength and function in older adults with chronic obstructive pulmonary disease (COPD). However, its effect on quality of life (QOL) has not been evaluated. This study evaluated the effect of SSRT on QOL in COPD patients enrolled in pulmonary rehabilitation (PR) and identified relationships between muscular strength, endurance and QOL. METHODS: 19 men and women (70.5 ± 5.0 years) with COPD completed 8 weeks of PR alone (TPR) or PR plus SSRT (SRT). QOL was measured using the Short Form 36 (SF-36). Upper and lower body strength was measured using chest and leg press, and lower body endurance was measured with the 6 Minute Walk (6MW). RESULTS: There were no significant differences in QOL between SRT and TPR before or after PR. Both groups demonstrated significant improvements in QOL including Physical Function (P = 0.021), Role Physical (P= 0.002), Vitality (P = 0.027), Social Functioning (P= 0.027), and Mental Health (P = 0.041). Before PR, only lower body strength and endurance were significantly related to Physical Function (r = 0.53, P = 0.024 and r = 0.51, P = 0.025, respectively). After the exercise program, upper body strength as well as lower body strength and endurance were significantly related to Physical Function (r = 0.57, P = 0.011; r = 0.51, P = 0.032; and r = 0.62, P = 0.005, respectively), although improvements in Physical Function were predicted solely by improvements in upper body strength (r = 0.54, P = 0.018). CONCLUSIONS: Addition of SSRT to traditional PR does not affect overall improvements in QOL that are influenced primarily by improvements in upper body strength. Our findings suggest a threshold effect for exercise training, such that once a threshold stimulus has been achieved, further improvements in QOL are not dose-dependent.
Melissa J Benton; Carolyn L Wagner
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-10
Journal Detail:
Title:  Respiratory care     Volume:  -     ISSN:  0020-1324     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7510357     Medline TA:  Respir Care     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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