지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 84 - 91 (8page)
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초록· 키워드
오류제보하기
Background: A hip fracture may occur spontaneously prior to the hip impact, due to the muscle pulling force exceeding the strength of the femur. Objects: We conducted falling experiments with humans to measure the activity of the hip muscles, and to examine how this was affected by the fall type. Methods: Eighteen individuals fell and landed sideways on a mat, by mimicking video-captured real-life older adults’ falls. Falling trials were acquired with three fall directions: forward, backward, or sideways, and with three knee positions at the time of hip impact, where the landing side knee was free of constraint, or contacted the mat or the contralateral knee. During falls, the activities of the iliopsoas (Ilio), gluteus medius (Gmed), gluteus maximus (Gmax) and adductor longus (ADDL) muscles were recorded. Outcome variables included the time to onset, activity at the time of hip impact, and timing of the peak activity with respect to the time of hip impact. Results: For Ilio, Gmed, Gmax, and ADDL, respectively, EMG onset averaged 292, 304, 350, and 248 ms after fall initiation. Timing of the peak activity averaged 106, 96, 84, and 180 ms prior to the hip impact, and activity at the time of hip impact averaged 72.3, 45.2, 64.3, and 63.4% of the peak activity. Furthermore, the outcome variables were associated with fall direction and/or knee position in all but the iliopsoas muscle. Conclusion: Our results provide insights on the hip muscle activation during a fall, which may help to understand the potential injury mechanism of the spontaneous hip fracture.
목차
등록된 정보가 없습니다.
참고문헌 (43)
참고문헌 신청
Grisso JA / 1990 / Injuries in an elderly inner-city population / J Am Geriatr Soc 38(12):1326~1331
Bouxsein ML / 2007 / Contribution of trochanteric soft tissues to fall force estimates, the factor of risk, and prediction of hip fracture risk / J Bone Miner Res 22(6):825~831
Choi WJ / 2010 / The effect of positioning on the biomechanical performance of soft shell hip protectors / J Biomech 43(5):818~825
Choi WJ / 2010 / Effect of hip protectors, falling angle and body mass index on pressure distribution over the hip during simulated falls / Clin Biomech (Bristol, Avon) 25(1):63~69
Lim KT / 2020 / Effect of fall characteristics on the severity of hip impact during a fall on the ground from standing height / Osteoporos Int 31(9):1713~1719
Bouxsein ML / 2007 / Contribution of trochanteric soft tissues to fall force estimates, the factor of risk, and prediction of hip fracture risk / J Bone Miner Res 22(6):825~831
Choi WJ / 2010 / The effect of positioning on the biomechanical performance of soft shell hip protectors / J Biomech 43(5):818~825
Choi WJ / 2010 / Effect of hip protectors, falling angle and body mass index on pressure distribution over the hip during simulated falls / Clin Biomech (Bristol, Avon) 25(1):63~69
Lim KT / 2020 / Effect of fall characteristics on the severity of hip impact during a fall on the ground from standing height / Osteoporos Int 31(9):1713~1719
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