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KMID : 1146820200220030008
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Asian Journal of Kinesiology
2020 Volume.22 No. 3 p.8 ~ p.16
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Effects of Vastus Lateralis Muscle Fascicle Length on Isokinetic Muscular Strength and Physical Fitness in Collegiate Athletes
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Lee Kwang-Jin
Lee Ho-Seong
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Abstract
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OBJECTIVES: The purpose of this study was to examine the effects of vastus lateralis muscle fascicle length on isokinetic muscle strength and physical fitness in collegiate athletes.
METHODS: 32 male collegiate athletes were classified into short fascicle length group (SFG, n=16) and long fascicle length group (LFG, n=16) by ultrasonic imaging. Both groups were tested for isokinetic muscular strength (peak torque, angle of peak torque and time to peak torque) and physical fitness (20 m sprint, T-drill, reaction time, side hop, square hop, figure of 8 hop, sergeant jump and Y-balance).
RESULTS: LFG showed a positive effect on pennation angle (p=.001), fascicle length (p=.001), angle of peak torque at 180°/sec (p=.037), time to peak torque at 90°/sec and 180°/sec (p=.036; p=.039), 20 m sprint (p=.016), T-drill (p=.005), side hop (p=.001) and square hop (p=.001), respectively compared to SFG. However, there was no difference between both groups of peak torque at 30°/sec, 90°/sec and 180°/sec, angle of peak torque at 30°/sec and 90°/sec, time to peak torque at 30°/sec, reaction time, sergeant jump and Y-balance.
CONCLUSIONS: These results found that long fascicle length of vastus lateralis muscle have excellent isokinetic muscle strength and physical fitness in collegiate athletes.
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KEYWORD
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Collegiate Athletes, Isokinetic Muscular Strength, Physical Fitness, Vastus Lateralis Muscle Fascicle Length
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