Background: Low back pain is closely associated with hip muscle dysfunction, particularly weakness of the gluteus medius, which plays a critical role in pelvic and spinal stability. The clamshell exercise is widely used in rehabilitation to strengthen the hip abductors; however, its effectiveness may be limited by compensatory activation of synergistic muscles. This study investigated the effects of ankle joint movement variations on hip muscle activity during the clamshell exercise. Methods: Twenty-four healthy adults with no orthopedic or neurological disorders in the past six months performed five exercise conditions: clamshell exercise (C), clamshell exercise with ankle inversion resistance (CIR), clamshell exercise with ankle eversion (CE), clamshell exercise with ankle eversion and eversion resistance (CEER), and clamshell exercise with ankle eversion and inversion resistance (CEIR). Surface electromyography was used to measure the activities of the gluteus medius (Gmed), tensor fascia latae (TFL), and gluteus maximus (Gmax), normalized to %MVIC. A one-way repeated-measures ANOVA with Bonferroni post-hoc tests was conducted to compare differences between conditions. Results: CEER elicited significantly greater Gmed activity compared with all other conditions (p<.05) and demonstrated the highest Gmed/TFL activation ratio, indicating reduced compensatory TFL involvement. Gmax activity was also significantly greater in CEER than in C (p<.05). CIR and CEIR produced significantly higher TFL activity compared with other conditions (p<.05). Conclusion: The clamshell exercise incorporating ankle eversion with eversion resistance effectively increased Gmed and Gmax activation while minimizing TFL overactivation. This approach may enhance hip muscle recruitment patterns and serve as a targeted rehabilitation strategy for individuals with low back pain or lower extremity dysfunction.
목차
ABSTRACT I. 서론 Ⅱ. 연구 방법 1. 연구 대상자 2. 실험도구 3. 실험 절차 및 운동 방법 5. 자료처리 Ⅲ. 연구 결과 1. 연구 대상자의 일반적 특성 2. 클램쉘 운동 간 근 활성도 비교 3. 클램쉘 운동 간 중간볼기근과 넙다리근막긴장근의 근 활성도 비 비교 Ⅳ. 고찰 Ⅴ. 결론 참고문헌
키워드
Ankle JointClamshell ExerciseGluteus MaximusGluteus MediusTensor Fascia Latae
대한정형도수물리치료학회 [Korean Academy of Orthopedic Manual Therapy]
설립연도
1992
분야
의약학>물리치료학
소개
대한정형물리치료학회는 대한물리치료사학회 정형물리치료 분과학회로서 정형물리치료학 분야의 연구및 학문발전에 목적을 가지고 있습니다.
본 학회에서는 다음과 같은 사업을 주관하고 있습니다.
첫째. 정형물리치료 분야 및 관련분야의 연구가 이루어지고 있으며,
둘째. 정형물리치료 연수위원회 운영 및 교육프로그램을 개발하고,
셋째. 학술대회 및 세미나를 개최하며,
넷째. 학회지 및 관련 도서를 발간 하고 있으며,
다섯째. 국제 및 국내 유관단체와 학술교류를 담당하고 있습니다.
간행물
간행물명
대한정형도수물리치료학회지 [The Journal of Korean Academy of Orthopedic Manual Physical Therapy]