Abstract:
BACKGROUND:Exercise intolerance is a major issue affecting many people with COPD. Six-minute walking distance (6MWD) is a widely used indicator of exercise capacity in patients with COPD. The process is strenuous and time-consuming, especially for patients who have muscle wasting. Anthropometric indicators that reflect body lean mass, such as body mass index (BMI), mid-arm circumference (MAC), and calf circumference (CC), may have value in predicting exercise intolerance. PURPOSE:This study attempted to determine the abilities of simple anthropometric indicators including BMI, MAC, and CC in reflecting the exercise intolerance of COPD patients. METHODS:We recruited 136 nonhospitalized ambulatory COPD patients without acute conditions from a general hospital in Taiwan. Each subject's BMI, MAC, and CC were measured, and they were examined with pulmonary function tests and a 6-minute walk test. RESULTS:Among the three anthropometric indicators examined, CC showed the strongest correlation with the 6MWD, followed by MAC and BMI. CC was also strongly associated with functional capacity, followed by MAC, according to the receiver operating characteristic curves. CC and MAC, but not BMI, were significantly associated with exercise intolerance according to logistic regression models that controlled for potential confounders. CONCLUSION:Among the three variables examined, CC and walking distance may have the strongest association in COPD patients. CC may have value in serving as an adjunct to 6MWD in evaluating exercise intolerance of patients with COPD.
journal_name
Int J Chron Obstruct Pulmon Disauthors
Ho SC,Hsu MF,Kuo HP,Wang JY,Chen LF,Lee KY,Chuang HCdoi
10.2147/COPD.S87714subject
Has Abstractpub_date
2015-09-08 00:00:00pages
1857-62eissn
1176-9106issn
1178-2005pii
copd-10-1857journal_volume
10pub_type
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journal_title:International journal of chronic obstructive pulmonary disease
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