{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,6]],"date-time":"2026-09-06T17:42:43Z","timestamp":1788716563013,"version":"build-2803163510"},"reference-count":32,"publisher":"Public Library of Science (PLoS)","issue":"4","license":[{"start":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T00:00:00Z","timestamp":1712793600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>Dynamic knee valgus (DKV) occurs during landing after a fatigue task involving the lower extremity. However, the manner in which different peripheral fatigue tasks affect DKV remains unknown. In this study, we investigated the DKV via electromyography during single-leg landing considering the hip-joint fatigue task (HFT) and knee-joint fatigue task (KFT) performed by healthy men. We recruited 16 healthy male participants who performed a single-leg jump-landing motion from a height of 20 cm before and after an isokinetic hip abduction\/adduction task (HFT) and knee extension\/flexion task (KFT). Three-dimensional motion analysis systems were attached to the left gluteus medius and quadriceps, and surface electromyography was used to analyze the lower limb kinematics, kinetics, and muscle activity. The primary effects and interactions of the task and fatigue were identified based on the two-way repeated-measures analysis of variance. The results of the average angle during landing indicated that DKV occurs in KFT, whereas HFT applies external forces that adduct and internally rotate the knee at peak vertical ground reaction force (vGRF). Furthermore, both KFT and HFT exhibited an increase in muscle activity in the quadriceps. The analysis revealed that the occurrence of DKV varies depending on the peripheral fatigue task, and the effects on average DKV during landing and DKV at peak vGRF vary depending on the peripheral fatigue task.<\/jats:p>","DOI":"10.1371\/journal.pone.0297910","type":"journal-article","created":{"date-parts":[[2024,4,11]],"date-time":"2024-04-11T20:06:30Z","timestamp":1712865990000},"page":"e0297910","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":7,"title":["Differences in lower-limb biomechanics during single-leg landing considering two peripheral fatigue tasks"],"prefix":"10.1371","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9323-8146","authenticated-orcid":true,"given":"Makoto","family":"Asaeda","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazuhiko","family":"Hirata","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomoya","family":"Ohnishi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideyuki","family":"Ito","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9131-7155","authenticated-orcid":true,"given":"So","family":"Miyahara","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yukio","family":"Mikami","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2024,4,11]]},"reference":[{"key":"pone.0297910.ref001","doi-asserted-by":"crossref","first-page":"2218","DOI":"10.1177\/0363546510373570","article-title":"Mechanisms for noncontact anterior cruciate ligament injuries: knee joint kinematics in 10 injury situations from female team handball and basketball","volume":"38","author":"H Koga","year":"2010","journal-title":"Am J Sports Med"},{"key":"pone.0297910.ref002","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1177\/0363546517732750","article-title":"Hip and ankle kinematics in noncontact anterior cruciate ligament injury situations: video analysis using model-based image matching","volume":"46","author":"H Koga","year":"2018","journal-title":"Am J Sports Med"},{"key":"pone.0297910.ref003","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1186\/s12891-020-03552-3","article-title":"Do knee abduction kinematics and kinetics predict future anterior cruciate ligament injury risk? 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