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首页> 外文期刊>Journal of Rehabilitation Research and Development >Influence of noncircular chainring on male physiological parameters inhand cycling
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Influence of noncircular chainring on male physiological parameters inhand cycling

机译:非圆形链条对男性手轮生理参数的影响

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The purpose of this study was to examine the influenceof a noncircular chainring (NCC) compared with a conventionalcircular chainring (CC) on hand cycling performance.Eleven nondisabled male participants with no hand cyclingexperience initially completed an incremental exercise test.Afterward, the participants completed two 20 s sprint tests, followedby a 20 min endurance test and then another two 20 ssprint tests. An NCC and a CC were used in random order ontwo separate occasions. To compare the effects of the NCC andCC on power data of the sprint tests and metabolic responseduring the endurance test, a twoway analysis of variance forrepeated measures was used. Average power values of the sprinttests showed no significant difference between NCC and CC,but over time, values of the first and third sprint tests werehigher than those of the second and fourth sprint tests for bothchainrings. Values of energy expenditure (kilojoules), grossefficiency (percentage), and net efficiency (percentage) after 10and 20 min during the endurance test using NCC and CCshowed no significant differences (p > 0.05) either betweentests or over time. Under the current test conditions and focusingon physiological parameters, a performance optimizationusing an NCC in hand cycling could not be proven.
机译:这项研究的目的是检验非圆形链环(NCC)与常规圆形链环(CC)相比对手骑自行车性能的影响.11名无手骑自行车经验的非残障男性参与者最初完成了增量运动测试,随后,参与者完成了两个20 s sprint测试,然后进行20分钟的耐力测试,然后再进行两次20 ssprint测试。 NCC和CC在两个不同的场合随机使用。为了比较NCC和CC对冲刺测试功率数据和耐力测试过程中代谢反应的影响,我们使用重复测量方差的双向分析。冲刺测试的平均功率值显示NCC和CC之间没有显着差异,但是随着时间的推移,两个链环的第一次和第三次冲刺测试的值都高于第二次和第四次冲刺测试的值。在使用NCC和CC进行耐力测试的10和20分钟后,能量消耗(千焦耳),总效率(百分比)和净效率(百分比)的值在两次测试之间或随时间推移均未显示出显着差异(p> 0.05)。在当前的测试条件下,并专注于生理参数,无法证明在手骑自行车中使用NCC进行性能优化。

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