Key result
Women with COPD had lower endurance time than men during exercise, reaching a critical inspiratory reserve volume earlier which led to a steep increase in dyspnoea (p<0.0001).
Why the study?
Does female gender affect exercise endurance, operating lung volumes, and symptom limitation during constant-work rate cycle exercise in patients with COPD compared to men?
Observational (n=186)
Does female gender affect exercise endurance, operating lung volumes, and symptom limitation during constant-work rate cycle exercise in patients with COPD compared to men?
Absolute Event Rate: 0.71% vs 0.81%
p-value: p=0.47
Women with COPD are physiologically disadvantaged during exercise compared to men, reaching critical inspiratory reserve volumes and severe dyspnea earlier, which limits their exercise endurance.
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Suggests sex differences warrant attention in COPD exercise assessment; leaves open causal mechanisms and intervention effects.
Laviolette et al. (2009) conducted an observational in COPD (n=186). Female sex vs. Male sex was evaluated on Rate of inspiratory capacity decrease during exercise (ml/s) (p=0.47). Women with COPD had lower endurance time than men during exercise, reaching a critical inspiratory reserve volume earlier which led to a steep increase in dyspnoea (p<0.0001).
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