Bishop David, Edge Johann
Team Sport Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Crawley, WA, 6009, Australia.
Eur J Appl Physiol. 2006 Jul;97(4):373-9. doi: 10.1007/s00421-006-0182-0. Epub 2006 Apr 13.
This study investigated the relationship between VO2max and repeated-sprint ability (RSA), while controlling for the effects of initial sprint performance on sprint decrement. This was achieved via two methods: (1) matching females of low and moderate aerobic fitness (VO2max: 36.4 +/- 4.7 vs 49.6 +/- 5.5 ml kg(-1) min(-1) ; p < 0.05) for initial sprint performance and then comparing RSA, and (2) semi-partial correlations to adjust for the influence of initial sprint performance on RSA. Tests consisted of a RSA cycle test (5 x 6-s max sprints every 30 s) and a VO2max test. Muscle biopsies were taken before and after the RSA test. There was no significant difference between groups for work (W1, 3.44 +/- 0.57 vs 3.58 +/- 0.49 kJ; p = 0.59) or power (P1, 788.1 +/- 99.2 vs 835.2 +/- 127.2 W; p = 0.66) on the first sprint, or for total work (W(tot), 15.2 +/- 2.2 vs 16.6 +/- 2.2 kJ; p = 0.25). However, the moderate VO2max group recorded a smaller work decrement across the five sprints (W(dec), 11.1 +/- 2.5 vs 7.6 +/- 3.4%; p = 0.045). There were no significant differences between the two groups for muscle buffer capacity, muscle lactate or pH at any time point. When a semi-partial correlation was performed, to control for the contribution of W1 to W(dec), the correlation between VO2max and W(dec) increased from r = -0.41 (p > 0.05) to r = -0.50 (p < 0.05). These results indicate that VO2max does contribute to performance during repeated-sprint efforts. However, the small variance in W(dec) explained by VO2max suggests that other factors also play a role.
本研究调查了最大摄氧量（VO2max）与重复冲刺能力（RSA）之间的关系，同时控制初始冲刺表现对冲刺能力下降的影响。这通过两种方法实现：（1）将有氧适能低和中等的女性（VO2max：36.4±4.7 vs 49.6±5.5 ml·kg⁻¹·min⁻¹；p<0.05）按照初始冲刺表现进行匹配，然后比较RSA；（2）采用半偏相关分析来调整初始冲刺表现对RSA的影响。测试包括一次RSA自行车测试（每30秒进行5次6秒的全力冲刺）和一次VO2max测试。在RSA测试前后采集肌肉活检样本。两组在第一次冲刺时的功（W1，3.44±0.57 vs 3.58±0.49 kJ；p = 0.59）或功率（P1，788.1±99.2 vs 835.2±127.2 W；p = 0.66），以及总功（W(tot)，15.2±2.2 vs 16.6±2.2 kJ；p = 0.25）方面均无显著差异。然而，中等VO2max组在五次冲刺中的功下降幅度较小（W(dec)，11.1±2.5 vs 7.6±3.4%；p = 0.045）。两组在任何时间点的肌肉缓冲能力、肌肉乳酸或pH值均无显著差异。当进行半偏相关分析以控制W1对W(dec)的贡献时，VO2max与W(dec)之间的相关性从r = -0.41（p>0.05）增加到r = -0.50（p<0.05）。这些结果表明，VO2max在重复冲刺运动中确实对表现有贡献。然而，VO2max所解释的W(dec)的小方差表明其他因素也起作用。
