{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T20:55:36Z","timestamp":1777668936769,"version":"3.51.4"},"reference-count":23,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2001,6,1]],"date-time":"2001-06-01T00:00:00Z","timestamp":991353600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Hum Factors"],"published-print":{"date-parts":[[2001,6]]},"abstract":"<jats:p>The goal of this study was to determine the systematic effect that varying the slope angle of a computer keyboard along with varying keyboard height (relative to elbow height) have on wrist extension angle while typing. Thirty participants typed on a keyboard whose slope was adjusted to +15\u00b0, +7.5\u00b0, 0\u00b0, -7.5\u00b0, and -15\u00b0. The height of the keyboard was set up such that participants' wrists were at the same height as their elbows, above their elbows, and four cm below their elbows. Results showed that as keyboard slope angle moved downward from +15\u00b0 to -15\u00b0, mean wrist extension decreased approximately 13\u00b0 (22\u00b0 at +15\u00b0 slope to 9\u00b0 at -15\u00b0 slope). Keyboard height had a similar effect with mean wrist extension decreasing from 21.8\u00b0 when the keyboard was lower than elbow height, to 7.3\u00b0 when the keyboard was higher than elbow height. Potential application of this research includes the downward sloping of computer keyboards, which could possibly be beneficial in the prevention of musculoskeletal disorders affecting the wrist<\/jats:p>","DOI":"10.1518\/001872001775900940","type":"journal-article","created":{"date-parts":[[2006,2,20]],"date-time":"2006-02-20T16:22:22Z","timestamp":1140452542000},"page":"287-298","source":"Crossref","is-referenced-by-count":36,"title":["Effect of Computer Keyboard Slope and Height on Wrist Extension Angle"],"prefix":"10.1177","volume":"43","author":[{"given":"Guy G.","family":"Simoneau","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard W.","family":"Marklin","sequence":"additional","affiliation":[{"name":"Marquette University, Milwaukee Wisconsin"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2001,6,1]]},"reference":[{"key":"atypb1","unstructured":"Albin, T. (1997). 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