Gilliam T B, Sady S P, Freedson P S, Villanacci J
Arch Phys Med Rehabil. 1979 Mar;60(3):110-4.
One hundred fifteen high school football players were screened isokinetically for the knee extensor and flexor torque generating capabilities and muscle imbalances. Each player was tested on a Cybex II at speeds of 30 degrees/sec and 180 degrees/sec. The subjects were stratified by age (15, 16, 17) and by position (linemen vs receivers and backs). Significant (p less than 0.05) torque differences were observed at both the slow and fast speeds for the knee extensors and flexors across the 3 age groups. However, the flexion to extension ratios did not differ significantly. On the other hand, when considering the positions, flexor torque and flexion to extension ratio at the slow speed were greater (p less than 0.05) for the linemen than the receivers and backs. Partial correlation analyses showed that body weight had the greatest effect on the knee torque values. It was concluded that basic torque measures differed with age and by position in the sport of football. Also, speed of movement altered the force generating capabilities of the muscle and resultant ratios.
对115名高中橄榄球运动员进行了等速测试，以评估其膝关节伸肌和屈肌的扭矩产生能力以及肌肉失衡情况。每位运动员在Cybex II上以30度/秒和180度/秒的速度进行测试。受试者按年龄（15岁、16岁、17岁）和位置（前锋与接球手及后卫）进行分层。在3个年龄组中，膝关节伸肌和屈肌在慢速和快速时均观察到显著（p<0.05）的扭矩差异。然而，屈伸比没有显著差异。另一方面，考虑位置时，前锋在慢速时的屈肌扭矩和屈伸比大于（p<0.05）接球手及后卫。偏相关分析表明，体重对膝关节扭矩值影响最大。得出的结论是，在橄榄球运动中，基本扭矩测量值因年龄和位置而异。此外，运动速度改变了肌肉的力量产生能力和结果比例。
