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KMID : 0359420220400020128
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Korean Journal of Sports Medicine
2022 Volume.40 No. 2 p.128 ~ p.137
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Comparison of Isokinetic Knee Strength Profiles According to History of Knee Surgery in Korean Women’s Professional Basketball Players
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Song Mun-Ku
Kang Hyun-Sik
Lee In-Hwan
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Abstract
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Purpose: This study compared isokinetic knee strength profiles by knee surgery history in basketball players.
Methods: A total of 17 professional female basketball players (age, 23.7±3.8 years) participated in this study. All the participants performed maximal isokinetic knee strength test concentrically at a velocity of 60°?sec?1 and 180°? sec?1. Strength variables included peak torque (PT), body mass normalized PT (NPT), bilateral strength difference (BD), hamstrings to quadriceps strength (H/Q) ratio. Independent t-test and one-way analysis of variance were used to compare mean differences in the measured parameters by knee surgery history and limb-based sugroups, respectively.
Results: Nine subjects had a history of knee surgery. At all velocities, there were no significant group differences in PTs, NPTs, BDs, and H/Q ratios of the knee extensor and flexor muscles by knee surgery history. Overall, NPTs of knee extensor and flexor muscles were 2.91?3.01 N?m?kg?1 and 1.55?1.59 N?m?kg?1, respectively, and H/Q ratios ranged from 52% to 55%. At 180°?sec?1. NPTs of knee extensor and flexor muscles were 1.90?1.92 N?m?kg?1 and 1.08?1.10 N?m?kg?1, respectively, and H/Q ratios ranged from 57% to 58%.
Conclusion: The current findings suggested that isokinetic knee strength profiles measured at 60°?sec?1 and 180°?sec?1 velocities were similar regardless of a history of knee surgery in the professional female basketball players.
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KEYWORD
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Isokinetic knee strength, Basketball players, Knee injuries, Quadriceps, Peak torque
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