Isokinetic torque levels for High School football players

T. B. Gilliam, S. P. Sady, P. S. Freedson, J. Villanacci

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


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°/sec and 180°/sec. The subjects were stratified by age (15, 16, 17) and by position (linemen vs receivers and backs). Significant (p<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<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.

Original languageEnglish (US)
Pages (from-to)110-114
Number of pages5
JournalArchives of Physical Medicine and Rehabilitation
Issue number3
StatePublished - 1979
Externally publishedYes

ASJC Scopus subject areas

  • Rehabilitation


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