• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Journal of Sports Science Medicine >Effects Of Cadence on Aerobic Capacity Following a Prolonged Varied Intensity Cycling Trial
【2h】

Effects Of Cadence on Aerobic Capacity Following a Prolonged Varied Intensity Cycling Trial

机译：长时间变化的强度循环试验后脚踏圈速对有氧运动能力的影响

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We determined if high cadences, during a prolonged cycling protocol with varying intensities (similar to race situations) decrease performance compared to cycling at a lower, more energetically optimal, cadence. Eight healthy, competitive male road cyclists (35 ± 2 yr) cycled for 180 min at either 80 or 100 rpm (randomized) with varying intensities of power outputs corresponding to 50, 65 and 80% of VO2max. At the end of this cycling period, participants completed a ramped exercise test to exhaustion at their preferred cadence (90 ± 7 rpm). There were no cadence differences in blood glucose, respiratory exchange ratio or rate of perceived exertion. Heart Rate, VO2 and blood lactate were higher at 100 rpm vs. 80 rpm. The total energy cost while cycling during the 65% and 80% VO2max intervals at 100 rpm (15.2 ± 2.7 and 19.1 ± 2.5 kcal∙min-1, respectively) were higher than at 80 rpm (14.3 ± 2.7 and 18.3± 2.2 kcal∙min-1, respectively) (p < 0.05). Gross efficiency was higher at 80 rpm vs. 100 rpm during both the 65% (22.8 ± 1.0 vs. 21.3 ± 4.5%) and the 80% (23.1 vs. 22.1 ± 0.9%) exercise intensities (P< 0.05). Maximal power during the performance test (362 ± 38 watts) was greater at 80 rpm than 100 rpm (327 ± 27 watts) (p < 0.05). Findings suggest that in conditions simulating those seen during prolonged competitive cycling, higher cadences (i.e., 100 vs. 80 rpm) are less efficient, resulting in greater energy expenditure and reduced peak power output during maximal performance.Key Points class="unordered" style="list-style-type:disc">When competitive cyclists perform prolonged exercise that simulates racing conditions (i.e., variable, low-moderate submaximal cycling), a higher cadence results in excess energy expenditure and lower gross efficiency compared to a lower cadence at the same power output.Consequently, maximal power output is reduced during a subsequent exercise bout to exhaustion after using a higher cadence.Selection of a lower, more energetically optimal cadence during prolonged cycling exercise may allow competitive cyclists to enhance maximal performance later in a race.
机译：我们确定了在不同强度（类似于比赛情况）的延长骑行协议期间，高节奏是否会比以更低，更节能的最佳节奏骑行而降低性能。八名健康，有竞争力的男性公路骑行者（35±2岁）以80或100 rpm（随机）的速度骑行180分钟，其功率输出强度对应于最大VO2max的50％，65％和80％。在此骑行周期结束时，参与者以自己喜欢的节奏（90±7 rpm）完成了一次倾斜运动测试，以至疲惫。血糖，呼吸交换率或感觉劳累率没有节奏差异。 100 rpm时的心率，VO2和血乳酸高于80 rpm。在100％的VO2max间隔为65％和80％时循环时的总能量消耗（分别为15.2±2.7和19.1±2.5 kcal∙min -1 ）高于80 rpm（14.3±分别为2.7和18.3±2.2 kcal∙min -1 ）（p <0.05）。在65％的运动强度（22.8±1.0对21.3±4.5％）和80％的运动强度（23.1对22.1±0.9％）期间，总效率在80 rpm和100 rpm时均较高（P <0.05）。性能测试期间的最大功率（362±38瓦）在80 rpm时大于100 rpm（327±27瓦）（p <0.05）。研究结果表明，在模拟长时间竞争性骑行的情况下，较高的节奏（即100与80 rpm）效率较低，从而导致最大性能下的能量消耗增加和峰值功率输出降低。要点 class =“ unordered” “ style =” list-style-type：disc“> <！-list-behavior = unordered prefix-word = mark-type = disc max-label-size = 0-> 当竞技自行车手进行长时间锻炼时可以模拟赛车状况（例如，可变的，低中度的次最大循环），而在相同的功率输出下，踏频越高，踏频越高，能量消耗越多，总效率越低。 因此，最大功率在随后的运动中，使用较高的节奏后，其输出会减少。 在长时间的自行车运动中选择较低的，能量更佳的最佳节奏，可能会使有竞争力的自行车手在比赛后期提高最佳表现。 / li>

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号