Relationship Between Lower-Extremity Co-Contraction and Jerk During Gait

被引:0
作者
Miyashita, Toshinori [1 ,2 ]
Kawanishi, Kengo [1 ,3 ]
Kudo, Shintarou [1 ,3 ,4 ]
机构
[1] Morinomiya Univ Med Sci, Inclus Med Sci Res Inst, Suminoe Ward, Nankokita 1-26-16, Osaka 5598611, Japan
[2] Morinomiya Univ Med Sci, Suminoe Ward, Osaka Bay Clin, Nankokita 1-26-16, Osaka 5598611, Japan
[3] Morinomiya Univ Med Sci, Suminoe Ward, Dept Phys Therapy, Nankokita 1-26-16, Osaka 5598611, Japan
[4] AR Ex Med Res Ctr, Setagaya Ward, 4-13-1 Todoroki, Tokyo 1580082, Japan
关键词
elderly; IMU; gait; co-contraction; MUSCLE COCONTRACTION; OLDER-ADULTS; ADVANCED AGE; WALKING; SPEED; LEVEL; COST;
D O I
10.3390/s25072327
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The elderly exhibit increased co-contraction (CC) during gait, reducing movement smoothness. The jerk has been used to quantitatively smoothness. This study aimed to investigate the relationship between lower-leg jerk and lower-extremity CC during gait. Participants were 30 healthy middle-aged and elderly people. Surface electromyography (EMG) was measured from the tibialis anterior (TA), gastrocnemius lateralis (GL), vastus lateralis (VL), and biceps femoris (BF). An inertial measurement unit was attached to the lower-leg. Jerk was calculated from inertial measurement unit (IMU) acceleration data, and CC was quantified as the percent co-contraction index (CCI) for TAGL, VLBF, and VLGL. To examine the correlation between CCI and jerk, the part with the highest correlation between jerk and CC during gait was used as the dependent variable, and a multiple regression analysis was performed to obtain the estimated CC values (p < 0.05). VLGL CCI increased with higher jerk during the second half of the stance phase and also increased as gait speed declined. The CCI of the VLGL in-creased with age. The multiple regression analysis adjusted for age and gait speed revealed a relationship between jerks and CCI. The CCI of the VLGL is most closely related to lower-leg jerks, which affect the gait of the elderly.
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页数:12
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