期刊
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
卷 89, 期 6, 页码 612-618出版社
SPRINGER-VERLAG
DOI: 10.1007/s00421-002-0779-x
关键词
cycle; exhaustion; fatigue; treadmill VO2; VO(2)max
The purpose of this study was to investigate the effect of exercise mode on the characteristics of the oxygen uptake (V) over dot O-2) response to exercise within the severe intensity domain. Twelve participants each performed a treadmill running test and a cycle ergometer test to fatigue at intensities selected to elicit a mode-specific (V) over dot O-2 max and to cause fatigue in similar to5 min. The tests were at 234 (30) m.min(-1) and 251 (59) W, and times to fatigue were 297 (15) s and 298 (14) s, respectively. The overall rapidity of the (V) over dot O(2)response was influenced by exercise mode [(V) over dot O(2)max was achieved after 115 (20) s in running versus 207 (36) s in cycling; p<0.01]. (V) over dot O-2 responses were fit to a three-phase exponential model. The time constant of the primary phase was faster in treadmill tests than in cycle ergometer tests [14 (6) s versus 25 (4) s; p < 0.01], and the amplitude of the primary phase was greater in running than in cycling when it was expressed in absolute I terms [2327 (393) ml.min(-1) versus 2036 (30 1) ml.min(-1); p = 0.02] but not when it was expressed as a percentage of the total increase in (V) over dot O-2 [86 (6)% versus 82 (6)%; p = 0.09]. When quantified as the difference between the end-exercise (V) over dot O-2 and the (V) over dot O-2 at 2 min, the amplitude of the slow component was similar to40% smaller in running [177 (92) ml.min(-1) versus 299 (153) ml min(-1); p = 0.03]. It Is concluded that exercise modality affects the characteristics of the (V) over dot O-2 response at equivalent intensities in the severe domain.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据