한국운동역학회지 (Korean Journal of Applied Biomechanics)

  • 제35권3호
  • /
  • Pages.219-228
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  • 2025
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  • 1226-2226(pISSN)
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  • 2093-9752(eISSN)
한국운동역학회 (Korean Society of Applied Biomechanics)
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체중부하 및 비체중부하 발목 관절 유연성과 외발 스쿼트 중 하지 관절 및 COP의 운동역학적 요인들간의 상관관계 분석

Correlation Analysis of Weight-Bearing and Non-Weight-Bearing Ankle Flexibility with Biomechanical Factors of the Lower Extremity and Center of Pressure During a Single-Leg Squat

  • Jae-Woo Lee (Sports Convergence Institute, Konkuk University) ;
  • Moon-Seok Kwon (Sports Convergence Institute, Konkuk University)
  • 투고 : 2025.08.08
  • 심사 : 2025.08.28
  • 발행 : 2025.09.30
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초록

Objective: This study investigated the Correlation analysis of weight-bearing (WBADF) and non-weight-bearing ankle dorsiflexion (NWBADF) ankle dorsiflexion with biomechanical factors of the lower extremity joint and center of pressure (COP) during a single-leg squat. Method: Thirty-nine healthy adults (25 males, 14 females; mean age 23.97 ± 2.43 years) participated in this study. Ankle flexibility was measured using electronic goniometers for both WBADF and NWBADF conditions. Reflective markers were affixed to joints following the Plug-In-Gait model, and participants performed single-leg squats while motion data were captured using eight Vicon cameras (250 Hz). Ground reaction forces were recorded via a force plate (2,000 Hz). Peak joint angles, maximum joint moments of lower extremity joints, and COP trajectory variables were analyzed using Pearson correlation analysis to identify relationships between ankle flexibility measures and biomechanical factors (α = .05). Results: WBADF showed no significant correlations with any lower extremity biomechanical variables or COP measures (p > .05). In contrast, NWBADF demonstrated significant negative correlations with maximum ankle dorsiflexion angle (r = -.333, p = .038) and maximum knee abduction angle (r = -.342, p = .033). Additionally, NWBADF showed a positive correlation with ankle plantar flexion moment (r = .433, p = .006) and negative correlations with knee extension moment (r = -.360, p = .024), knee abduction moment (r = -.327, p = .042), and maximum anterior knee displacement (r = -.384, p = .016). Conclusion: Changes in ankle range of motion based on NWBADF criteria induced compensatory knee movements, increasing injury risk and affecting postural stability. Therefore, NWBADF is a more rational method than WBADF for evaluating dynamic lower extremity performance in exercises requiring musculoskeletal coordination.

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참고문헌

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