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KMID : 1195020200160020037
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Archives of Orthopedic and Sports Physical Therapy
2020 Volume.16 No. 2 p.37 ~ p.44
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The Effects of Plyometrics and Weight Training on Power, Agility and Muscle Tone of Quadriceps and Hamstring
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Zhao Yaowei
Lee Seok-Joo
Sim Young-Je
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Abstract
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Purpose: This study compared the changes in power and agility and muscle tone of the quadriceps andhamstring muscles after 10 weeks of plyometrics or weight training to strengthen the leg muscles. The followingconclusions were obtained.
Methods: Subjects were randomly assigned to a plyometrics group (n = 10) and a weight training group (n= 10) from male college students who did not recently participate in a regular exercise program. Plyometricsand weight training were performed three times a week for 10 weeks with 60 minutes a day. The exerciseintensity was divided into 3 stages, and the weight training group and the plyometrics group performed 3sets of 1 repetition maximum (RM) of 60, 70, 80%, and 10, 12, 15 repetitions (rep), respectively.
Results: First, there was an interaction effect between the group and time period on power. The plyometricsgroup showed a greater increase in power than the weight training group. Second, there was an interaction effectbetween the group and time period on agility. While agility improved in the plyometrics group, no significantdifference was observed in the weight training group. Third, there was an interaction effect between the groupand time period on the muscle tones of the left and right quadriceps muscles. The muscle tone increasedmore in the weight training group than in the plyometrics group. Fourth, there was an interaction effect betweenthe group and time period on the muscle tones of the left and right hamstring muscles. The muscle tone increasedmore in the weight training group than in the plyometrics group.
Conclusion: The change in muscle tone value was found to have a significant relationship with the increase inmuscle strength and power through plyometrics and weight training, and additional research should be conductedto investigate the relationship between exercise performance ability and muscle tone.
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KEYWORD
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Plyometrics, Weight training, Power, Agility, Muscle tone
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