Predictors of repeated-sprint ability in elite female hockey players
Predictors of repeated-sprint ability in elite female hockey players
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DOI：
10.1016/s1440-2440(03)80255-4
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发表时间：
2003-06-01
影响因子：
4
通讯作者：
Spencer, M
中科院分区：
文献类型：
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作者：
Bishop, D;Lawrence, S;Spencer, M
在一系列冲刺中保持最大功率的能力可能部分取决于PCr的再合成和氢离子（H+）的缓冲。14名优秀女子曲棍球运动员（平均+/-SD体重：61.1 +/- 5.9 kg，VO 2 peak：55.7 +/- 3.2 mL.kg（-1）.min（-1））参与了这项研究。测试包括重复冲刺能力测试（每30秒进行5次6秒的全力冲刺）和VO 2峰值测试。在5 × 6-s循环试验前后采集毛细血管和静脉血，测定乳酸浓度和pH值。在重复短跑能力试验中，VO 2峰值（mL.kg（-1）.min（-1））与总功（J.kg（-1）; r = 0.35）或功率衰减（r = 0.30）之间无显著相关性。功率下降与血浆[H+]浓度变化呈显著相关（r = 0.66; P < 0.05）。本研究结果表明，在一组同质的优秀团队运动员中，VO 2峰值（mL.kg（-1）.min（-1））不是重复短跑能力的强预测因子。然而，在这个组中，血浆[H+]的变化和重复冲刺能力之间存在显著相关性。
The ability to maintain maximal power over a series of sprints may depend, in parts on the resynthesis of PCr and the buffering of hydrogen ions (H+). As a result, repeated-sprint ability may be related to VO2peak and changes in plasma pH. Fourteen elite female field-hockey players (Mean+/-SD body mass: 61.1 +/- 5.9 kg and VO2peak: 55.7 +/- 3.2 mL.kg(-1).min(-1)) participated in this investigation. Tests consisted of a repeated-sprint ability test (5 x 6-s all-out sprints every 30 s) and a VO2peak test. Capillary and venous blood was sampled before and after the 5 x 6-s cycle test for the determination of lactate concentration and pH. There were no significant correlations between VO2peak (mL.kg(-1).min(-1)) and total work (J.kg(-1); r = 0.35), or power decrement (r = 0.30) during the repeated-sprint ability test. There was, however, a significant correlation between power decrement and change in plasma [H+] (r = 0.66; P < 0.05). The results of this study show that in a homogenous group of elite, team-sport athletes, VO2peak (mL.kg(-1).min(-1)) is not a strong predictor of repeated-sprint ability. However, in this group, there is a significant correlation between change in plasma [H+] and repeated-sprint ability.