The Relationship between Aerobic Fitness and Change in Repeated Sprint Ability before and after a Half-time

International Journal of Sport and Health Science Pub Date : 2017-07-07 DOI:10.5432/IJSHS.201637

Natsumi Kinoshita, Fuminori Takayama, Y. Nabekura

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Abstract

This study investigated the relationship between aerobic ˆtness and repeated sprint ability (RSA) before and after a half-time. Thirteen male volunteers (23 ± 2 years, 175 ± 5 cm, 67 ± 6 kg; [mean ± standard error]) participated in this study. All subjects underwent two laboratory tests on a cycle ergometer. An initial test was conducted to determine aerobic ˆtness. On separate day, the RSA test was conducted. The RSA exercise comprised 15 × 6-s sprints with 54-s recovery periods. This was duplicated after a 15-min half-time. The blood lactate (Bla) removal rate was calculated using Bla values before and after the half-time. As a result of aerobic ˆtness, seven subjects were classiˆed as ˆt (  58 ml/kg/min) and six as unˆt ( ＜ 58 ml/kg/min). The maximal peak power was signiˆcantly reduced in the unˆt group (p ＜ 0.05) but not in the ˆt group (p ＞ 0.05) at the second session. The change in maximal peak power between sessions was signiˆcantly correlated with _VO 2 max (r ＝ 0.714, p ＜ 0.01). A strong correlation was observed between Bla removal rate and _VO 2 max (r ＝ 0.830, p ＜ 0.01). These results indicate that aerobically ˆt subjects recover more quickly after RSA exercise due to superior lactate removal

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有氧适能与间歇前后重复冲刺能力变化的关系

本研究调查了在中场休息前后有氧度和重复冲刺能力(RSA)之间的关系。男性志愿者13名(23±2岁，175±5厘米，67±6公斤;[均数±标准误差])参加本研究。所有受试者都在自行车测力仪上进行了两次实验室测试。进行初始测试以确定有氧度。在另外一天进行RSA测试。RSA练习包括15 × 6-s的冲刺和54-s的恢复期。在中场休息15分钟后，这种情况再次发生。采用血乳酸(Bla)值计算血乳酸(Bla)去除率。由于有氧运动，7名受试者被归类为t型(58 ml/kg/min)， 6名受试者被归类为t型(< 58 ml/kg/min)。第2次治疗时，unt组的最大峰值功率显著降低(p < 0.05)，但不显著降低(p > 0.05)。两组间最大峰值功率的变化与_vo2 max显著相关(r = 0.714, p < 0.01)。Bla去除率与_vo2 max呈极显著相关(r = 0.830, p < 0.01)。这些结果表明，有氧运动受试者在RSA运动后恢复得更快，因为乳酸清除得更好

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International Journal of Sport and Health Science

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