{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T08:10:31Z","timestamp":1777795831986,"version":"3.51.4"},"reference-count":29,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2020,10,23]],"date-time":"2020-10-23T00:00:00Z","timestamp":1603411200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004663","name":"Ministry of Science and Technology, Taiwan","doi-asserted-by":"publisher","award":["MOST 109-2627-H-006-004"],"award-info":[{"award-number":["MOST 109-2627-H-006-004"]}],"id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004663","name":"Ministry of Science and Technology, Taiwan","doi-asserted-by":"publisher","award":["MOST 109-2811-H-006-503"],"award-info":[{"award-number":["MOST 109-2811-H-006-503"]}],"id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Footwork is the most fundamental skill in badminton, involving the ability of acceleration or deceleration and changing directions on the court, which is related to accurate shots and better game performance. The footwork performance in-field is commonly assessed using the total finished time, but does not provide any information in each direction. With the higher usage of the smartphones, utilizing their built-in inertial sensors to assess footwork performance in-field might be possible by providing information about body acceleration in each direction. Therefore, the purpose of this study was to evaluate the feasibility of a smartphone-based measurement system on badminton six-point footwork. The body acceleration during the six-point footwork was recorded using a smartphone fixed at the belly button and a self-developed application in thirty badminton players. The mean and maximum of the acceleration resultant for each direction of the footwork were calculated. The participants were classified into either the faster or slower group based on the finished duration of footwork. Badminton players who finished the footwork faster demonstrated a greater mean and maximum acceleration compared to those who finished slower in most directions except for the frontcourt directions. The current study found that using a smartphone\u2019s built-in accelerometer to evaluate badminton footwork is feasible.<\/jats:p>","DOI":"10.3390\/s20216035","type":"journal-article","created":{"date-parts":[[2020,10,23]],"date-time":"2020-10-23T08:59:28Z","timestamp":1603443568000},"page":"6035","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Feasibility of Smartphone-Based Badminton Footwork Performance Assessment System"],"prefix":"10.3390","volume":"20","author":[{"given":"Ya-Lan","family":"Chiu","sequence":"first","affiliation":[{"name":"Department of Physical Therapy, National Cheng Kung University, Tainan 701, Taiwan"},{"name":"Institution of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan 701, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6173-2879","authenticated-orcid":false,"given":"Chia-Liang","family":"Tsai","sequence":"additional","affiliation":[{"name":"Institution of Physical Education, Health and Leisure Studies, National Cheng Kung University, Tainan 701, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0129-208X","authenticated-orcid":false,"given":"Wen-Hsu","family":"Sung","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei 112, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4082-2634","authenticated-orcid":false,"given":"Yi-Ju","family":"Tsai","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, National Cheng Kung University, Tainan 701, Taiwan"},{"name":"Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan"}]}],"member":"1968","published-online":{"date-parts":[[2020,10,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"707","DOI":"10.1080\/0264041031000140275","article-title":"Science and the major racket sports: A review","volume":"21","author":"Lees","year":"2003","journal-title":"J. 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