The Isokinetic Study Of The Different Fitness Training Modes On Changes In Muscular Function Of Male Recruits' Knee Flexors And Extensors To The Chinese Army

The purpose of this study was to evaluate the influence of different fitness training modes on changes in muscular function of male recruits?knee flexors and extensors to the Chinese army. A total of 60 infantry males (aged 16-20 years) were divided into three groups equally. The recruit's in-group A received endurance training, group B received combined endurance training and speed training, and group C received combined endurance training and strength training. At the beginning and end of their 4-week training, they were received isokinetic dynamometer testing in both knees flexors and extensors with the Cybex-6000 isokinetic dynamometer. The study shows: (1). As the speed of isokinetic contraction increased, torque production decreased, but average power, average power to the body ratio, torque acceleration energy and F/E ratios increased. (2). All of muscular performance parameters of knee extensors were significantly higher than the flexors at two angular velocities (60 Is, 180 /s). (3). There were no significant difference between dominant and nondominant sides at high angular velocities (180 - Is). (4). The range of F/E ratio was between 50% to 70% at two angular velocities (60 (1 /s, 180? Is). Range of isokinetic parameters of both limbs during flexion and extension of recruits?knees may be useful for comparative purpose in function evaluations used in military training related medical science.(5). Four weeks of recruit's endurance training is partially increasing muscular strength, explosive force and muscular endurance of knee flexors and extensors, especially of knee flexors. (6). Four weeks of recruit combined endurance and speed training is not sufficient for increasing muscular strength, explosive force and muscular endurance of knee flexors and extensors. (7). Four weeks of recruit combined endurance and strength training in the Chinese army is effective in terms of increasing muscular strength, explosive force and muscular endurance of knee flexors and extensors. More loads should be applied to strengthen the extensor strength.