Duffield Rob, Dawson Brian, Goodman Carmel
School of Human Movement and Exercise Science, University of Western Australia, Crawley, Australia.
J Sports Sci. 2005 Mar;23(3):299-307. doi: 10.1080/02640410410001730043.
As a wide range of values has been reported for the relative energetics of 400-m and 800-m track running events, this study aimed to quantify the respective aerobic and anaerobic energy contributions to these events during track running. Sixteen trained 400-m (11 males, 5 females) and 11 trained 800-m (9 males, 2 females) athletes participated in this study. The participants performed (on separate days) a laboratory graded exercsie test and multiple race time-trials. The relative energy system contribution was calculated by multiple methods based upon measures of race VO2, accumulated oxygen deficit (AOD), blood lactate and estimated phosphocreatine degradation (lactate/PCr). The aerobic/anaerobic energy system contribution (AOD method) to the 400-m event was calculated as 41/59% (male) and 45/55% (female). For the 800-m event, an increased aerobic involvement was noted with a 60/40% (male) and 70/30% (female) respective contribution. Significant (P < 0.05) negative correlations were noted between race performance and anaerobic energy system involvement (lactate/PCr) for the male 800-m and female 400-m events (r = - 0.77 and - 0.87 respectively). These track running data compare well with previous estimates of the relative energy system contributions to the 400-m and 800-m events. Additionally, the relative importance and speed of interaction of the respective metabolic pathways has implications to training for these events.
由于关于400米和800米田径跑项目相对能量学的数值报道范围很广，本研究旨在量化在田径跑过程中这些项目各自有氧和无氧能量的贡献。16名训练有素的400米跑运动员（11名男性，5名女性）和11名训练有素的800米跑运动员（9名男性，2名女性）参与了本研究。参与者（在不同日期）进行了实验室分级运动测试和多次比赛计时赛。基于比赛VO2、累积氧亏（AOD）、血乳酸和估计的磷酸肌酸降解（乳酸/磷酸肌酸）测量值，通过多种方法计算相对能量系统贡献。400米项目的有氧/无氧能量系统贡献（AOD方法）计算为41/59%（男性）和45/55%（女性）。对于800米项目，有氧参与度增加，分别贡献为60/40%（男性）和70/30%（女性）。在男子800米和女子400米项目中，比赛成绩与无氧能量系统参与度（乳酸/磷酸肌酸）之间存在显著（P<0.05）负相关（r分别为-0.77和-0.87）。这些田径跑数据与先前对400米和800米项目相对能量系统贡献的估计结果比较吻合。此外，各代谢途径相互作用的相对重要性和速度对这些项目的训练有影响。
