Why the study?
Does chronic heart failure alter oxygen uptake kinetics during submaximal exercise compared to healthy controls?
Population
20 subjects total: 10 patients with chronic heart failure and 10 age-matched healthy control subjects.
Comparison
Submaximal exercise testing on a cycle ergometer… vs Age-matched healthy control subjects performing…
Design
Case-control
Authors
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VO2 kinetics impairment in HF appears workload-dependent; leaves open whether relative-intensity protocols better guide exercise assessment.
Does chronic heart failure alter oxygen uptake kinetics during submaximal exercise compared to healthy controls?
Patients with heart failure exhibit prolonged oxygen uptake kinetics during submaximal exercise at an absolute workload, but this impairment is proportional to their reduced maximal exercise capacity rather than an independent peripheral limitation.
Hepple et al. (1999) studied this question.
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