앉았다 일어서기 동작에서 초기 발 넓이가 무릎 내전 모멘트에 미치는 영향
Effect of initial foot width on knee adduction moment during a sit-to-stand movement
- 발행기관 서강대학교 일반대학원
- 지도교수 신충수
- 발행년도 2025
- 학위수여년월 2025. 8
- 학위명 석사
- 학과 및 전공 일반대학원 기계공학과
- 실제 URI http://www.dcollection.net/handler/sogang/000000082174
- UCI I804:11029-000000082174
- 본문언어 한국어
- 저작권 서강대학교 논문은 저작권 보호를 받습니다.
초록 (요약문)
Sit-to-stand (STS) is an essential activity in daily life and is often performed more than 60 ± 22 times per day. Increase in knee adduction moment (KAM) is strongly associated with knee osteoarthritis (KOA) progression. Changing initial foot width during STS is one of strategies improving the STS performance. The purpose of this study was to investigate the changes in KAM during STS across different initial foot widths. Twenty healthy men performed STS movement with three different initial foot widths (i.e., 100% shoulder width (SW), 120% SW, 140% SW). The KAM, ground reaction force in coronal plane, vertical and medial GRFs, and moment arm in coronal plane at the time of peak KAM, the knee flexion moment (KFM), GRF in sagittal plane, vertical and posterior GRFs, and moment arm in sagittal plane at the time of peak KFM, maximum trunk flexion and lean, range of motion (ROM) of knee flexion and adduction, duration time and each duration time of STS phases were analyzed and compared using one-way repeated measures ANOVA and post hoc t-test using Bonferroni correction. A significant reduction in KAM were found in 120% SW (p < 0.001), 140% SW (p < 0.001) compared to 100% SW. However, the maximum trunk flexion and lean, ROM of knee flexion and adduction, entire duration time, and each phase duration time showed no significant difference among three different initial foot widths. These results indicate that widening initial foot width during STS decreases KAM, potentially reducing the risk of KOA onset, without affecting maximum trunk flexion and lean, ROM of knee flexion and adduction, or duration time. Furthermore, these findings suggest the possibility that altering initial foot width during STS may alleviate disease progression in patients with KOA.
more목차
Table of Contents i
List of Tables iv
List of Figures v
Abstract vi
I. Introdution 1
II. Purpose and Hypothesis 4
III. Method 5
3.1 Subjects 5
3.2 Experiment and Apparatus 6
3.3 Data Analysis 9
3.4 Statistical Analysis 12
IV. Result 13
4.1 Kinetics 13
4.2 Kinematics 17
4.3 Temporal Parameters 19
V. Discussion 21
5.1 The knee adduction moment, GRFs, and moment arm in coronal plane 21
5.2 The knee flexion moment, GRFs, and moment arm in sagittal plane 24
5.3 The knee range of motion in coronal and sagittal plane 25
5.4 The maximum trunk flexion and lean 26
5.5 The duration times of entire and individual phases of sit-to-stand 27
VI. Limitation 28
VII. Conclusion 29
References 30
