Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Effect of Static Stretching and Myofascial Release Techniques on Kinematic Factors of Lower Extremity Joints during Squat

스쿼트 동작 시 정적 스트레칭과 근막이완기법이 하지 관절의 운동학적 요인에 미치는 영향

  • Seung-Ki An (Department of Sports Science, Graduate School of Konkuk University) ;
  • Moon-Seok Kwon (Sports Convergence Institute, Konkuk University) ;
  • Jae-Woo Lee (Sports Convergence Institute, Konkuk University) ;
  • Young-Tae Lim (Division of Sports & Health Science, College of Biomedical & Health Science, Konkuk University)
  • Received : 2024.04.08
  • Accepted : 2024.04.29
  • Published : 2024.06.30
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Abstract

Objective: The purpose of this study was to analyze the differences in kinematic factors according to stretching treatment, myofascial release treatment, and static stretching treatment conditions during squat. Method: Twelve males with resistance training experience participated in this study. Participants performed squats without treatment (Pre-Test), and performed squats after treatment with the myofascial release technique (MRT) and static stretching (SS) on different days (post-test). Squat movements were captured using eight motion capture cameras (sampling rate: 250 Hz), and the peak joint angles of the ankle, knee, hip, and pelvis were calculated for each direction. One-way repeated ANOVA and Bonferroni post hoc analyses using SPSS 27 (IBM Corp. Armonk NY, USA) were used to compare the peak joint angle of the lower extremity joints and pelvis among the normal condition (squat without treatment), MRT condition (squat after MRT treatment) and SS condition (squat after static stretching). The statistical significance level was set at .05. Results: It was observed that the maximum ankle joint flexion angle during squats was statistically reduced under conditions of myofascial release and static stretching (p<.05), in comparison to the scenario where no stretching was performed. Furthermore, static stretching was found to enhance the maximum hip flexion angle during squat (p<.05), whereas the myofascial release stretching technique resulted in the minimal posterior pelvic tilt angle (p<.05). Conclusion: Employing myofascial release stretching as a preparatory exercise proved to be more efficacious in maintaining body stability throughout the execution of high-intensity squat movements by effectively managing the posterior tilt of the pelvis, as opposed to foregoing stretching or engaging in static stretching.

Keywords

Acknowledgement

This paper was supported by Konkuk University in 2023.

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