The Research Of The Relative Energy System Contribution In Middle-distance Running Events

Purpose:Energy metabolism is the basis for human activities, the application of the law of energy metabolism to grasp the function of the level of athletes and guide exercise training, can effectively improve the athlete's athletic ability, but also a sign of scientific training. This study aimed to quantify the aerobic and anaerobic energy contributions in middle distance running events, providing the theory support for training and competition of these events.Method:Seven male trained middle-distance runners (national level) participated in this study. Each participants performed two tests. In the first test session, the participants performed five steps (speed 10,12,14,16 and 18km/h)of 6 min in duration and measured steady V02 with V02000, with these data we can establish the V-V02 regression equation for each participant. In the second test session, we collected the metabolism data and measured maximum post-exercise blood lactate concentration when the participants performed a solo time-trail run over their chosen distance (either 800m or 1500m) on an outdoor 400m synthetic athletic track. The contributions of energy systems were calculated by calculation of the estimation of the total energy demand and accumulated oxygen deficit(AOD).Results:In this article we studied the contributions of the aerobic and anaerobic energy system to 800m and 1500m track running events with AOD method during all-out time-trails performed individually on a synthetic athletic track. The aerobic/anaerobic energy system contribution to 800m was calculated as 52.29/47.71%. For the 1500m events, the aerobic/anaerobic energy system contribution is 78.31/21.69%.Conclusion:The results of the present study conform with some recent foreign measures of energy system contributions to these events, it also demonstration that the aerobic energy system is the main supply not only the 1500m but also 800m.