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http://dx.doi.org/10.12674/ptk.2022.29.4.249

The Relationship Between Hip Abductor and Pelvic Drop During Lateral Step Down in the Elderly  

Lee, Young-kwon (Department of Physical Therapy, The Graduate School, Yonsei University)
Jung, Sung-hoon (Department of Physical Therapy, College of Software and Digital Healthcare Convergence, Yonsei University)
Yoo, Hwa-ik (Department of Physical Therapy, The Graduate School, Yonsei University)
Kwon, Oh-yun (Department of Physical Therapy, College of Software and Digital Healthcare Convergence, Yonsei University)
Publication Information
Physical Therapy Korea / v.29, no.4, 2022 , pp. 249-254 More about this Journal
Abstract
Background: The lateral step down (LSD) is a form of stair negotiation used by the elderly because it requires less movement of the lower extremity. Although it is necessary to study the amount of pelvic drop and the strength of a hip abductor during LSD for intervention, limited studies have investigated the relationship between the amount of pelvic drop and strength of a hip abductor during LSD in elderly people. Objects: This study aimed to determine the relationship between the amount of pelvic drop on an unsupported leg and the strength of the hip abductor during LSD in the elderly. Methods: Thirty elderly people (male: 17, female: 13) were recruited. Subjects performed the LSD task, and the evaluator measured and the amount of pelvic drop on an unsupported side. Also, the isometric strength of the hip abductor was measured in a supine position. Results: We found significant relationships between the strength of the hip abductor and the amount of pelvic drop (r = -0.386). The average hip abductor strength normalized by body weight was 1.06 N/kg (max: 1.99, min: 0.52) and the average contralateral pelvic drop (CPD) angle was 4.16° (max: 15.3, min: 0). Conclusion: Our results indicated that the strength of the hip abductor had a moderate correlation with the CPD during a LSD in the elderly. Hip abductor weakness could translate into altered movement of the pelvis.
Keywords
Hip abductor; Pelvic drop; Senile weakness; Step down;
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Times Cited By KSCI : 2  (Citation Analysis)
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