Research on the Energy Contribution and Exercise Efficiency in 2 km Simulated Rowing Race for Adolescent Male
Objective:To investigate the characteristics of energy contribution and exercise effi-ciency in 2 km simulated race among adolescent male rowers,providing a reference for arrang-ing training loads,formulating training plans,and enhancing athletic performance. Methods:Thirty adolescent male rowers at the second-level athlete standard or above were recruited. A rowing ergometer was used to calculate the mechanical energy during maximum-intensity exer-cise in the 2 km simulated race. Portable cardiopulmonary function testers and blood lactate tes-ters were employed to measure gas metabolism throughout the simulated race and 10 minutes post-exercise,as well as blood lactate concentrations before and after exercise. The phosphoryl-creatine-lactate-oxygen (PCr-La-O2) method was utilized to calculate the energy supply propor-tions and exercise efficiency during the simulated race. Results:In the 2 km simulated race,the anaerobic alactic energy supply proportion was (8.81±0.92)％,the anaerobic lactic energy sup-ply proportion was (8.43±1.76)％,and the aerobic energy supply proportion was (82.76±1.99)％ among adolescent male rowers. The mechanical energy during the simulated race was (101.73±12.45) kJ,the biological energy was (621.80±75.47) kJ,and the exercise efficiency was (16.60±1.87)％. Conclusion:During the 2 km simulated race,the aerobic energy supply proportion was the highest among adolescent male rowers,with the anaerobic alactic energy supply proportion being comparable to the anaerobic lactic energy supply proportion. However,their exercise efficiency may be relatively low.
adolescentsrowerssimulated racerelative energy contributionexercise efficiency
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