Purpose: Standard foot core exercises are typically performed in a neutral ankle position, potentially neglecting the biomechanical influence of the muscle length-tension relationship. This study examined the effects of ankle joint angles (neutral vs. 30° dorsiflexion) and specific foot exercises (short foot [SF], toe curl [TC], and toe spread [TS]) on the electromyographic activity of the abductor hallucis (AH) and tibialis anterior (TA) in adults with flexible flatfoot. Methods: Thirty young adults with flexible flatfoot performed SF, TC, and TS exercises in a weight-bearing standing posture under neutral and 30° dorsiflexed ankle conditions using a custom wedge board. Surface electromyography was used to assess the normalized muscle activation (%RVC) of the AH and TA. A 2×3 repeated-measures ANOVA was used to analyze main and interaction effects. Results: A significant interaction between ankle angle and exercise type was observed for AH activation (p = .020); TS elicited the highest AH activity in the neutral position (62.33%), whereas SF maximized AH recruitment at 30° dorsiflexion (64.53%). In contrast, TA activation demonstrated no significant interaction (p = .412) but exhibited significant independent main effects. TA activity significantly increased during 30° dorsiflexion compared with the neutral condition (58.68% vs. 45.41%, p < .001) and was highest during the TC exercise (67.15%, p < .001). Conclusion: Sagittal plane ankle kinematics fundamentally govern the selective recruitment of foot musculature. Manipulating ankle dorsiflexion may enable clinicians to selectively isolate intrinsic muscles or synergistically co-activate extrinsic stabilizers, providing a sound biomechanical foundation for precision rehabilitation in flexible flatfoot.
목차
Abstract Ⅰ. 서론 Ⅱ. 연구 방법 1. 연구 설계 2. 연구 대상자 3. 근전도 측정 및 데이터 처리 4. 실험 절차 5. 통계 분석 Ⅲ. 연구 결과 1. 대상자의 일반적 특성 2. 엄지벌림근(AH)의 근활성도 비교 3. 앞정강근(TA)의 근활성도 비교 Ⅳ. 고찰 Ⅴ. 결론 참고문헌
대한스포츠물리치료학회 [Korean Society of Sports Physical Therapy]
설립연도
1992
분야
의약학>물리치료학
소개
스포츠물리치료학의 발전향상과 회원 상호간의 유대강화 및 친목을 도모함을 목적으로 하며 다음 사업을 한다.
1.스포츠물리치료학의 연구발전에 관한 사항.
2.학술지 발간에 관한 사항.
3.스포츠물리치료 정보의 수집 및 교환에 관한 사항.
4.국제 스포츠물리치료 교류에 관한 사항.
5.스포츠물리료학 교육 및 지도에 관한 사항.
6.기타 본회 목적 달성에 관한 사항.
간행물
간행물명
정형스포츠물리치료학회지 [Archives of Orthopedic and Sports Physical Therapy]