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Maximum force generation of skinned diaphragm fibers from non-COPD and mild-to-moderate COPD patients. Maximum force, normalized to cross sectional area, of single fibers from COPD patients was lower in type slow and 2A fibers compared to non-COPD patients. Data are presented as model estimates ± sem. *: P < 0.05 different from non-COPD group. Reproduced from Ottenheijm et al. [18] with permission.
