期刊名称：Ovidius University Annals, Series Physical Education and Sport/Science, Movement and Health
印刷版ISSN：1224-7359
出版年度：2011
卷号：11
期号：2
页码：375-379
语种：English
出版社：Ovidius University Press
摘要：Purpose.The paper presents different methods used for evaluation of the average power as energetical parameter on vertical jumping on both legs.The average power is calculated using Lewis’s,Harman’s,Johnson’s & Bahamonde,Sayers’s and Georgescu’s formulas.A comparative analysis is performed.Theoretical concepts.The average power can be calculated using different formulas experimentally determined,using either the mass and the vertical jump height,or the flight periods of time and the periods on the ground.Different formulas were used as follows: - Lewis’s formula uses the mass and the jump height as input data;- Harman’s formula provides the average power and the peak power,using regression method;- Johnson’s and Bahamonde formula uses the mass,the jump height and the athlete’s height as input data;- Sayers’s formula provides the average power using the same input data as Lewis,but with different coefficients;- Georgescu’s formula is based on Bosco’s theory and it uses the flying times and ground times as input data.Conclusions.In order to get the average power developed by an athlete while performing vertical jumping on both legs,we can use different experimental methods.For each method,we can reveal the input data and the energetical parameters provided by the experiment (the average and the extreme values).The input data are different from one method to another.Most formulas are based on the vertical jump height and on the athlete’s mass,except for the MGM formula which is based on the flying times and times on the ground.The average power as energetical parameter provides an accurate evaluation of the ratio force-power which is very important as training parameter.The training process can be oriented to render the value of this ratio optimum.
