{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T11:58:19Z","timestamp":1787313499057,"version":"build-2736575974"},"reference-count":54,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,3,9]],"date-time":"2021-03-09T00:00:00Z","timestamp":1615248000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The 10-s grip and release is a method to evaluate hand dexterity. Current evaluations only visually determine the presence or absence of a disability, but experienced physicians may also make other diagnoses. In this study, we investigated a method for evaluating hand movement function by acquiring and analyzing fingertip data during a 10-s grip and release using a wearable sensor that can measure triaxial acceleration and strain. The subjects were two healthy females. The analysis was performed on the x-, y-, and z-axis data, and absolute acceleration and contact force of all fingertips. We calculated the variability of the data, the number of grip and release, the frequency response, and each finger\u2019s correlation. Experiments with some grip-and-release patterns have resulted in different characteristics for each. It was suggested that this could be expressed in radar charts to intuitively know the state of grip and release. Contact-force data of each finger were found to be useful for understanding the characteristics of grip and release and improving the accuracy of calculating the number of times to grip and release. Frequency analysis suggests that knowing the periodicity of grip and release can detect unnatural grip and release and tremor states. The correlations between the fingers allow us to consider the finger\u2019s grip-and-release characteristics, considering the hand\u2019s anatomy. By taking these factors into account, it is thought that the 10-s grip-and-release test could give us a new value by objectively assessing the motor functions of the hands other than the number of times of grip and release.<\/jats:p>","DOI":"10.3390\/s21051918","type":"journal-article","created":{"date-parts":[[2021,3,9]],"date-time":"2021-03-09T12:08:01Z","timestamp":1615291681000},"page":"1918","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Visualizing and Evaluating Finger Movement Using Combined Acceleration and Contact-Force Sensors: A Proof-of-Concept Study"],"prefix":"10.3390","volume":"21","author":[{"given":"Hitomi","family":"Oigawa","sequence":"first","affiliation":[{"name":"Department of MBT, Graduate School of Medicine, Nara Medical University, Nara 634-8521, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoshiro","family":"Musha","sequence":"additional","affiliation":[{"name":"Toho University Ohashi Medical Center, Department of Orthopedic Surgery, Toho University, Tokyo 153-8515, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Youhei","family":"Ishimine","sequence":"additional","affiliation":[{"name":"Toho University Ohashi Medical Center, Department of Orthopedic Surgery, Toho University, Tokyo 153-8515, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4355-0665","authenticated-orcid":false,"given":"Sumito","family":"Kinjo","sequence":"additional","affiliation":[{"name":"Toho University Ohashi Medical Center, Department of Orthopedic Surgery, Toho University, Tokyo 153-8515, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuya","family":"Takesue","sequence":"additional","affiliation":[{"name":"Toho University Ohashi Medical Center, Department of Orthopedic Surgery, Toho University, Tokyo 153-8515, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hideyuki","family":"Negoro","sequence":"additional","affiliation":[{"name":"Brigham and Women\u2019s Hospital and Harvard Medical School, Boston, MA 02115, USA"},{"name":"MBT Institute, Nara Medical University, Nara 634-8521, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomohiro","family":"Umeda","sequence":"additional","affiliation":[{"name":"MBT Institute, Nara Medical University, Nara 634-8521, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,9]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2019). 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