한국운동역학회지 (Korean Journal of Applied Biomechanics)

  • 제32권4호
  • /
  • Pages.134-140
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  • 2022
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  • 1226-2226(pISSN)
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  • 2093-9752(eISSN)
한국운동역학회 (Korean Society of Applied Biomechanics)
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1-RM 직접측정법이 초보자의 백스쿼트에 미치는 영향

Effect of 1-RM Direct Measurement Method on Beginners' Back Squat

  • Jaeho, Kim (Department of Physical Education, Graduate School of Korea National Sport University) ;
  • Sukhoon, Yoon (Department of Community Sport, Korea National Sport University)
  • 투고 : 2022.12.10
  • 심사 : 2022.12.27
  • 발행 : 2022.12.31
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초록

Objective: This study aims to verify effect of 1-RM direct measurement method of back squat on beginners. Method: Total of 8 healthy adults were recruited for this study (age: 29 ± 3.81 yrs., height: 174 ± 3.83 cm., body mass: 74 ± 11.63 kg., 1RM: 96 ± 19.78 kg). All participants performed the back squat with 80%, 90% and 100% of the pre-measured 1RM. A three-dimensional motion analysis was performed with 8 infrared cameras and 3 channels of EMG were used for this study. One-way ANOVA with repeated measure was used for the statistical analysis with the significant level set to α=.05. Results: The ankle joint ROM in the transverse plane was significantly increased as the weight increased during the concentric contraction phase 2 (p < .05). In addition, the erector spinae and the gluteus maximus, which are synergist for the motion, showed a significant difference according to the increased weight (p < .05). Conclusion: Our results revealed that beginners increase potential dynamic knee valgus as weight increased. Therefore, it is thought that field coaches should pay attention to this to minimize and prevent injuries when measuring 1-RM for beginners.

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