{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:47:27Z","timestamp":1760233647476,"version":"build-2065373602"},"reference-count":37,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2021,2,7]],"date-time":"2021-02-07T00:00:00Z","timestamp":1612656000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001868","name":"National Science Council","doi-asserted-by":"publisher","award":["NSC 98-2815-C-034-009-H"],"award-info":[{"award-number":["NSC 98-2815-C-034-009-H"]}],"id":[{"id":"10.13039\/501100001868","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Ministry of Education, Taiwan","award":["Higher Education Deep Cultivation Project of National Taiwan Normal University"],"award-info":[{"award-number":["Higher Education Deep Cultivation Project of National Taiwan Normal University"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Whole-body vibration (WBV) is commonly applied in exercise and rehabilitation and its safety issues have been a major concern. Vibration measured using accelerometers can be used to further analyze the vibration transmissibility. Optimal bending angles and rating of perceived exertion (RPE) evaluations have not been sufficiently explored to mitigate the adverse effect. Therefore, the aims of this study were to investigate the effect of various knee flexion angles on the transmissibility to the head and knee, the RPE during WBV exposure, and the link between the transmissibility to the head and the RPE. Sixteen participants randomly performed static squats with knee flexion angles of 90, 110, 130, and 150 degrees on a WBV platform. Three accelerometers were fixed on the head, knee, and center of the vibration platform to provide data of platform-to-head and platform-to-knee transmissibilities. The results showed that the flexion angle of 110 degrees induced the lowest platform-to-head transmissibility and the lowest RPE (p &lt; 0.01). A positive correlation between RPE and the platform-to-head transmissibility was observed. This study concluded that a knee flexion of about 110 degrees is most appropriate for reducing vibration transmissibility. The reported RPE could be used to reflect the vibration impact to the head.<\/jats:p>","DOI":"10.3390\/s21041158","type":"journal-article","created":{"date-parts":[[2021,2,10]],"date-time":"2021-02-10T04:33:46Z","timestamp":1612931626000},"page":"1158","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Managing Vibration Training Safety by Using Knee Flexion Angle and Rating Perceived Exertion"],"prefix":"10.3390","volume":"21","author":[{"given":"Long-Ren","family":"Chuang","sequence":"first","affiliation":[{"name":"Department of Combat Sports and Chinese Martial Arts, Chinese Culture University, Taipei 11114, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3977-9221","authenticated-orcid":false,"given":"Wen-Wen","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine, China Medical University, Taichung 406040, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Po-Ling","family":"Chang","sequence":"additional","affiliation":[{"name":"Department of Combat Sports and Chinese Martial Arts, Chinese Culture University, Taipei 11114, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vincent Chiun-Fan","family":"Chen","sequence":"additional","affiliation":[{"name":"Engineering Program, Loyola University Chicago, Chicago, IL 60660, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chiang","family":"Liu","sequence":"additional","affiliation":[{"name":"Graduate Institute of Sports Equipment Technology, University of Taipei, Taipei 11153, Taiwan"},{"name":"Center for Sport Science and Technology, National Tsing Hua University, Hsinchu 300044, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tzyy-Yuang","family":"Shiang","sequence":"additional","affiliation":[{"name":"Department of Athletic Performance, National Taiwan Normal University, Taipei 11677, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,2,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"339","DOI":"10.1097\/JSM.0000000000000466","article-title":"Efficacy of whole-body vibration board training on strength in athletes after anterior cruciate ligament reconstruction: A randomized controlled study","volume":"28","author":"Costantino","year":"2018","journal-title":"Clin. 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