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Isokinetic strength testing does not predict hamstring injury in Australian Rules footballers
K Bennell1, H Wajswelner, P Lew
1School of Physiotherapy, University of Melbourne, Victoria, Australia.
British Journal of Sports Medicine
|December 29, 1998
Summary
Isokinetic muscle strength testing did not predict hamstring injuries in Australian Rules footballers. Previous hamstring strain history was a significant factor, but not muscle weakness or imbalance.
Area of Science:
- Sports Medicine
- Biomechanics
- Injury Prevention
Background:
- Hamstring injuries are common in Australian Rules Football.
- Muscle strength and imbalance are potential risk factors for hamstring injuries.
Purpose of the Study:
- To investigate the relationship between hamstring and quadriceps muscle strength and imbalance and hamstring injury risk.
- To determine if isokinetic testing can identify players at risk.
Main Methods:
- Prospective observational cohort study of 102 Australian Rules footballers.
- Isokinetic dynamometry assessed hamstring and quadriceps torque at 60 and 180 degrees/second.
- Players were monitored for hamstring strains throughout the season.
Main Results:
- No significant differences in isokinetic strength or ratios between injured and non-injured players.
- Previous hamstring strain history, not muscle weakness or imbalance, was linked to injury.
- Specific strength ratios (hamstring to opposite hamstring <0.90, hamstring to quadriceps <0.60) did not predict injury risk.
Conclusions:
- Isokinetic muscle strength testing alone cannot identify Australian Rules footballers at high risk for hamstring injury.
- Further research may be needed to explore other predictive factors for hamstring injuries.