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摘要
Ardern, CL, Pizzari, T, Wollin, MR, and Webster, KE. Hamstrings strength imbalance in professional football (soccer) players in Australia. J Strength Cond Res 29(4): 997-1002, 2015-The aim of this study was to describe the isokinetic thigh muscle strength profile of professional male football players in Australia. Concentric (60 degrees and 240 degrees.s(-1)) and eccentric (30 degrees and 120 degrees.s(-1)) hamstrings and quadriceps isokinetic strength was measured with a HUMAC NORM dynamometer. The primary variables were bilateral concentric and eccentric hamstring and quadriceps peak torque ratios, concentric hamstring-quadriceps peak torque ratios, and mixed ratios (eccentric hamstring 30 degrees.s(-1) divided by concentric quadriceps 240 degrees.s(-1)). Hamstring strength imbalance was defined as deficits in any 2 of: bilateral concentric hamstring peak torque ratio <0.86, bilateral eccentric hamstring peak torque ratio <0.86, concentric hamstring-quadriceps ratio <0.47, and mixed ratio <0.80. Fifty-five strength tests involving 42 players were conducted. Ten players (24%) were identified as having hamstring strength imbalance. Athletes with strength imbalance had significantly reduced concentric and eccentric bilateral hamstring peak torque ratios at all angular velocities tested; and reduced eccentric quadriceps peak torque (30 degrees.s(-1)) in their stance leg, compared with those without strength imbalance. Approximately, 1 in 4 players had preseason hamstring strength imbalance; and all strength deficits were observed in the stance leg. Concentric and eccentric hamstrings strength imbalance may impact in-season football performance and could have implications for the future risk of injury.
- 出版日期2015-4
