{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T22:25:49Z","timestamp":1774823149715,"version":"3.50.1"},"reference-count":31,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2021,9,6]],"date-time":"2021-09-06T00:00:00Z","timestamp":1630886400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and Higher Education of Poland","award":["WI\/WM-IIB\/2\/2021"],"award-info":[{"award-number":["WI\/WM-IIB\/2\/2021"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The purpose of this study was to examine the changes in muscular activity between the left and right lower legs during gait in healthy children throughout temporal parameters of EMG and symmetry index (SI). A total of 17 healthy children (age: 8.06 \u00b1 1.92 years) participated in this study. Five muscles on both legs were examined via the Vicon 8-camera motion analysis system synchronized with a Trigno EMG Wireless system and a Bertec force plate; onset\u2013offset intervals were analyzed. The highest occurrence frequency of the primary activation modality was found in the stance phase. In the swing phase, onset\u2013offset showed only a few meaningful signs of side asymmetry. The knee flexors demonstrated significant differences between the sides (p &lt; 0.05) in terms of onset\u2013offset intervals: biceps femoris in stance, single support, and pre-swing phases, with SI values = \u22126.45%, \u221214.29%, and \u221217.14%, respectively; semitendinosus in single support phase, with SI = \u221212.90%; lateral gastrocnemius in swing phase, with SI = \u221213.33%; and medial gastrocnemius in stance and single support phases, with SI = \u221213.33% and \u221223.53%, respectively. The study outcomes supply information about intra-subject variability, which is very important in follow-up examinations and comparison with other target groups of children.<\/jats:p>","DOI":"10.3390\/s21175983","type":"journal-article","created":{"date-parts":[[2021,9,6]],"date-time":"2021-09-06T21:47:38Z","timestamp":1630964858000},"page":"5983","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["EMG Based Analysis of Gait Symmetry in Healthy Children"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0898-4860","authenticated-orcid":false,"given":"Kristina","family":"Daunoraviciene","sequence":"first","affiliation":[{"name":"Department of Biomechanical Engineering, Vilnius Gediminas Technical University, 03224 Vilnius, Lithuania"}]},{"given":"Jurgita","family":"Ziziene","sequence":"additional","affiliation":[{"name":"Department of Biomechanical Engineering, Vilnius Gediminas Technical University, 03224 Vilnius, Lithuania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8607-7129","authenticated-orcid":false,"given":"Jolanta","family":"Pauk","sequence":"additional","affiliation":[{"name":"Biomedical Engineering Institute, Bialystok University of Technology, 15-351 Bialystok, Poland"}]},{"given":"Giedre","family":"Juskeniene","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation, Physical and Sports Medicine, Health Science Institute, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania"}]},{"given":"Juozas","family":"Raistenskis","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation, Physical and Sports Medicine, Health Science Institute, Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1016\/j.gaitpost.2016.03.002","article-title":"Normative EMG patterns of ankle muscle co-contractions in school-age children during gait","volume":"46","author":"Mengarelli","year":"2016","journal-title":"Gait Posture"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1016\/j.gaitpost.2010.06.024","article-title":"Normative EMG activation patterns of school-age children during gait","volume":"32","author":"Agostini","year":"2010","journal-title":"Gait Posture"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"346","DOI":"10.1016\/j.gaitpost.2004.11.014","article-title":"Repeatability of surface EMG during gait in children","volume":"22","author":"Granata","year":"2005","journal-title":"Gait Posture"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"607","DOI":"10.1016\/j.jelekin.2012.02.001","article-title":"Comparison of electromyography and joint moment as indicators of co-contraction","volume":"22","author":"Knarr","year":"2012","journal-title":"J. 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