Bishop D, Lawrence S, Spencer M
The University of Western Australia.
J Sci Med Sport. 2003 Jun;6(2):199-209. doi: 10.1016/s1440-2440(03)80255-4.
The ability to maintain maximal power over a series of sprints may depend, in part, 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 VO2pea: 55.7 +/- 3.2 mL x kg(-1) x 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 x kg(-1) x 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 x kg(-1) x 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.
在一系列冲刺过程中保持最大功率的能力可能部分取决于磷酸肌酸（PCr）的再合成以及氢离子（H+）的缓冲。因此，重复冲刺能力可能与最大摄氧量（VO2peak）和血浆pH值的变化有关。14名精英女子曲棍球运动员（平均±标准差体重：61.1±5.9 kg，VO2peak：55.7±3.2 mL·kg-1·min-1）参与了本研究。测试包括重复冲刺能力测试（每30秒进行5次6秒全力冲刺）和VO2peak测试。在5次6秒循环测试前后采集毛细血管血和静脉血，以测定乳酸浓度和pH值。在重复冲刺能力测试期间，VO2peak（mL·kg-1·min-1）与总功（J·kg-1；r = 0.35）或功率下降（r = 0.30）之间无显著相关性。然而，功率下降与血浆[H+]变化之间存在显著相关性（r = 0.66；P < 0.05）。本研究结果表明，在一组同质的精英团队运动运动员中，VO2peak（mL·kg-1·min-）不是重复冲刺能力的有力预测指标。然而，在该组中，血浆[H+]变化与重复冲刺能力之间存在显著相关性。
