The Kinematic-Muscle Synergies during Infant Crawling: A Pilot Study

作者全名："Zhang, Li; Chen, Lin; Liu, Yuan; Chen, Yu X.; Xiao, Nong; Wu, Xiao Y.; Hou, Wen S."

作者地址："[Zhang, Li; Chen, Lin; Wu, Xiao Y.; Hou, Wen S.] Chongqing Univ, Key Lab Biorheol Sci & Technol, Minist Educ, Bioengn Coll, Chongqing 400044, Peoples R China; [Liu, Yuan; Chen, Yu X.; Xiao, Nong] Chongqing Med Univ, Dept Rehabil Ctr, Childrens Hosp, Chongqing 400014, Peoples R China"

通信作者："Hou, WS (通讯作者)，Chongqing Univ, Key Lab Biorheol Sci & Technol, Minist Educ, Bioengn Coll, Chongqing 400044, Peoples R China."

来源："2023 45TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY, EMBC"

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WOS号：WOS:001133788304001

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年份：2023

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文献类型：Proceedings Paper

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摘要："Many feature extraction algorithms have been separately used for kinematic or muscle synergy analysis during human movement. However, very few studies focus on the co-extraction of kinematic and muscle synergies. Therefore, the aim of this study was to propose a novel and efficient approach for extracting the kinematic-muscle synergies during infant crawling. Surface electromyography signals and three-dimensional joint trajectories were collected from 20 typically developing infants during self-paced hands-and-knees crawling. Angular accelerations of shoulder, elbow, hip and knee flexion/extension computing from those joint trajectories were divided into two independent directional positive degrees-of-freedom. The kinematic-muscle synergies and corresponding activation coefficients were extracted using the non-negative matrix factorization algorithm based on two selection criteria of synergy number (i.e., criterion 1: the total constraint, criterion 2: a combination of the total constraint and a local constraint for each joint/muscle). Then, the data of each joint/muscle were reconstructed by those synergies and corresponding activation coefficients. Our results indicated that the minimum number of kinematic-muscle synergies based on criterion 1 is less than that based on criterion 2. The data reconstruction of joint flexion/extension based on criterion 2 is better than that based on criterion 1, whereas the data reconstruction of muscles is similar between criterion 1 and 2. These promising results show the feasibility of applying the proposed approach to clinical assessments of motor function for infants."

基金机构："Natural Science Foundation of China [31971287, 31470953]"

基金资助正文："Research supported by the Natural Science Foundation of China (31971287, 31470953)."