{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T10:51:08Z","timestamp":1769165468907,"version":"3.49.0"},"reference-count":37,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,20]],"date-time":"2022-12-20T00:00:00Z","timestamp":1671494400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Study on the Ergonomics and Operation Improvement of Ice-Snow Sports Equipment","award":["2019YFF0302001"],"award-info":[{"award-number":["2019YFF0302001"]}]},{"name":"Study on the Ergonomics and Operation Improvement of Ice-Snow Sports Equipment","award":["2021TD010"],"award-info":[{"award-number":["2021TD010"]}]},{"name":"Fundamental Research Funds for Central Universities","award":["2019YFF0302001"],"award-info":[{"award-number":["2019YFF0302001"]}]},{"name":"Fundamental Research Funds for Central Universities","award":["2021TD010"],"award-info":[{"award-number":["2021TD010"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Balance ability is one of the important factors in measuring human physical fitness and a common index for evaluating sports performance. Its quality directly affects the coordination ability of human movements and plays an important role in human productive activities. In the field of sports, balance ability is an important indicator of athletes\u2019 selection and training. How to objectively analyze balance performance becomes a problem for every non-professional sports enthusiast. Therefore, in this paper, we used a dataset of lower limb collected by inertial sensors to extract the feature parameters, then designed a RUS Boost classifier for unbalanced data whose basic classifier was SVM model to predict three classifications of balance degree, and, finally, evaluated the performance of the new classifier by comparing it with two basic classifiers (KNN, SVM). The result showed that the new classifier could be used to evaluate the balanced ability of lower limb, and performed higher than basic ones (RUS Boost: 72%; KNN: 60%; SVM: 44%). The results meant the established classification model could be used for and quantitative assessment of balance ability in initial screening and targeted training.<\/jats:p>","DOI":"10.3390\/s23010033","type":"journal-article","created":{"date-parts":[[2022,12,21]],"date-time":"2022-12-21T02:31:33Z","timestamp":1671589893000},"page":"33","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["A Quantitative Assessment Grading Study of Balance Performance Based on Lower Limb Dataset"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3270-9845","authenticated-orcid":false,"given":"Fei","family":"Wang","sequence":"first","affiliation":[{"name":"AI Sports Engineering Lab., School of Sports Engineering, Beijing Sport University, 48 Xinxi Road, Beijing 100084, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anqi","family":"Dong","sequence":"additional","affiliation":[{"name":"AI Sports Engineering Lab., School of Sports Engineering, Beijing Sport University, 48 Xinxi Road, Beijing 100084, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4187-341X","authenticated-orcid":false,"given":"Kaiyu","family":"Zhang","sequence":"additional","affiliation":[{"name":"AI Sports Engineering Lab., School of Sports Engineering, Beijing Sport University, 48 Xinxi Road, Beijing 100084, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dexing","family":"Qian","sequence":"additional","affiliation":[{"name":"AI Sports Engineering Lab., School of Sports Engineering, Beijing Sport University, 48 Xinxi Road, Beijing 100084, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yinsheng","family":"Tian","sequence":"additional","affiliation":[{"name":"AI Sports Engineering Lab., School of Sports Engineering, Beijing Sport University, 48 Xinxi Road, Beijing 100084, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1093\/ageing\/30.suppl_4.33","article-title":"Effects of physical activity on postural stability","volume":"30","author":"Skelton","year":"2001","journal-title":"Age Ageing"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/0966-6362(96)82849-9","article-title":"Human balance and posture control during standing and walking","volume":"3","author":"Winter","year":"1995","journal-title":"Gait Posture"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s12283-011-0070-7","article-title":"Embedded programming and real-time signal processing of swimming strokes","volume":"14","author":"Bindel","year":"2011","journal-title":"Sports Eng."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"446","DOI":"10.1123\/ijspp.2014-0233","article-title":"A Comparative Analysis of Accelerometer and Time\u2013Motion Data in Elite Men\u2019s Hockey Training and Competition","volume":"10","author":"Polglaze","year":"2015","journal-title":"Int. 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