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Quadriceps muscle endurance in patients with chronic obstructive pulmonary disease
Author(s) -
Hul Alex Van'T,
Harlaar Jaap,
Gosselink Rik,
Hollander Peter,
Postmus Piet,
Kwakkel Gert
Publication year - 2004
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.10552
Subject(s) - copd , medicine , pulmonary disease , quadriceps muscle , rehabilitation , cardiology , physical therapy , pulmonary rehabilitation , physical medicine and rehabilitation , analysis of variance , muscle fatigue , electromyography
The purpose of this study was to compare quadriceps muscle strength (maximal voluntary contraction, MVC), endurance (T LIM ), and dynamic work capacity (W LIM ) in 89 patients (57 men and 32 women) with chronic obstructive pulmonary disease (COPD) to 31 healthy controls (20 men and 11 women). Compared with the healthy subjects, COPD patients demonstrated statistically significant ( P < 0.05) lower values for MVC, T LIM and W LIM . The MVC was 20–30% lower, whereas T LIM and W LIM were 70–80% lower in the patients. Stepwise multiple regression analysis revealed that pulmonary function variables contributed only partially to the explanation of variance in MVC, T LIM , and W LIM . Our results indicate that in patients with COPD, quadriceps muscle endurance and dynamic work capacity are impaired to a greater extent than is quadriceps muscle strength. For rehabilitation purposes, the findings may lead to more specific exercise programs, further enhancing rehabilitation outcomes in terms of functional abilities and social participation. Muscle Nerve 29: 267–274, 2004