期刊
CLINICAL PHYSIOLOGY AND FUNCTIONAL IMAGING
卷 30, 期 6, 页码 480-484出版社
WILEY
DOI: 10.1111/j.1475-097X.2010.00959.x
关键词
cardiac power output; cardiovascular health; trained men
类别
Previous investigations into peak cardiac power output (CPO peak) have been limited to clinical populations and healthy, but non-athletic adults, and normative data on trained individuals would allow a greater understanding of this parameter. Therefore, we recruited eight healthy, well-trained male cyclists. Peak oxygen consumption (VO2 peak) was assessed using an incremental ergometer test, and following a 40-min recovery period, peak cardiac output (QT peak) was measured during a constant load test that elicited VO2 peak (+/- 5%) using the Defares CO2 rebreathing technique. CPO peak was calculated as described by Cooke et al. (1998). Mean (+/- SD) values during the constant load test were: VO2 peak, 4 center dot 94 +/- 0 center dot 41 l min(-1); QT peak, 36 center dot 5 +/- 3 center dot 7 l min(-1); mean arterial pressure, 123 +/- 8 mmHg and CPO peak, 9 center dot 9 +/- 1 center dot 0 W. These results demonstrate CPO peak in a well-trained population to be approximately twice those observed in healthy, but non-athletic adults. The current data provide useful information regarding the upper limits and possible 'trainability' of cardiac pumping capacity for sedentary and clinically compromised individuals.
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