Development of a hip exercise method that considers femoral morphology to increase the activity of gluteus medius muscles.

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K23287
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0909:Sports sciences, physical education, health sciences, and related fields
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: Sho Mitomo 東京医科歯科大学, 東京医科歯科大学病院, 理学療法士 (60879419)
• Project Period (FY): 2020-09-11 – 2023-03-31
• Keywords: 中殿筋 / 筋活動 / クラムエクササイズ / 大腿骨前捻角 / 骨形態 / 股関節 / 女性

Outline of Final Research Achievements

In this study, based on the degree of femoral anteversion, we divided healthy women into two groups (excessive [anteversion angle > 20°] and normal [8° < anteversion angle < 15°]) and measured the activity of hip abductor muscles, including each fiber of the gluteus medius, during a clam exercise with detailed adjustment of the exercise position. The results showed that when the femoral anteversion angle was excessive, the activity of the posterior fibers of the gluteus medius and gluteus maximus muscles was decreased. The activity of the posterior fiber of the gluteus medius and gluteus maximus muscles increased when the hip flexion angle was increased. Therefore, it is necessary to adjust the hip flexion angle in the clam exercise to effectively increase the activity of the hip abductor muscle group and to set the load based on the subject's anteversion angle of the femur.

Free Research Field

スポーツ医学，リハビリテーション医学

Academic Significance and Societal Importance of the Research Achievements

大腿骨前捻角が大きい者にとって中殿筋を含めた股関節外転筋群の活動を高めるクラムエクササイズの肢位は検討されておらず，未だに大腿骨形態の特徴は考慮されずに，画一的な運動方法のみで予防プログラム等に運用されているのが現状である．本研究で得られた結果は，対象者の大腿骨前捻角の大きさを考慮してオーダーメイドかつ効果的なエクササイズ方法を指導するための科学的根拠となる．また，本研究結果から得られた知見は，膝靭帯損傷の予防へ応用できることに加え，過大な前捻角が症状を増悪させる股関節唇損傷などの他の整形外科疾患に対する運動療法へ波及させることができる．