Comparison of Isokinetic Knee Strength Profiles According to History of Knee Surgery in Korean Women’s Professional Basketball Players
10.5763/kjsm.2022.40.2.128
- Author:
Munku SONG
1
;
Hyunsik KANG
;
Inhwan LEE
Author Information
1. College of Sport Science, Sungkyunkwan University, Suwon, Korea
- Publication Type:Clinical Article
- From:The Korean Journal of Sports Medicine
2022;40(2):128-137
- CountryRepublic of Korea
- Language:English
-
Abstract:
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.
