{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T22:14:05Z","timestamp":1767651245353,"version":"3.38.0"},"reference-count":22,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2010,2,1]],"date-time":"2010-02-01T00:00:00Z","timestamp":1264982400000},"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":[[2010,2]]},"abstract":"<jats:p> Objective: The aim of this study was to examine effects of practice and age on step-up movements onto raised structures. Background: Falls from laterally compliant structures, such as stepladders, often cause injuries in elderly persons. Although age differences in step-up movements onto raised structures with unexpected structural compliance have been reported, practice effects of such movement control have not been investigated. Method: Movement behavior of 20 healthy adults (10 young and 10 older males) was measured while they stepped up onto a raised structure with no compliance (i.e., rigid) (C<jats:sub>0<\/jats:sub>), a small amount of mediolateral compliance (C<jats:sub>1<\/jats:sub>), or greater mediolateral compliance (C<jats:sub>2<\/jats:sub>). The conditions C<jats:sub> 0<\/jats:sub>, C<jats:sub>1<\/jats:sub>, and C<jats:sub>2<\/jats:sub> were presented in three sets of six fixed-order trials with step-up movements performed at a comfortable speed. Practice effects in step-up behavior were examined by comparing data within each trial block with the use of repeated-measures ANOVA. Results: Practice significantly reduced the stepping duration ( Ts) needed to complete the step-up movement ( p &lt; .001). With practice, older males reduced their lateral oscillations 26% to 40% for C<jats:sub>1<\/jats:sub> and C<jats:sub>2<\/jats:sub>, whereas the corresponding results for young males lay between 8% and 17%, respectively. The age difference in Ts decreased across six consecutive trials but remained significant, especially on the structure with greater compliance. Conclusion: With practice, both young and elderly men adapted their stepping behavior to the presence of lateral structural compliance, but it is noteworthy from a fall-injury prevention perspective that the elderly men required more trials to do so. Application: Designers and users of raised structures, such as stepladders, should be aware of the age difference of people using such structures and should minimize the structure compliance when designing them. <\/jats:p>","DOI":"10.1177\/0018720810368541","type":"journal-article","created":{"date-parts":[[2010,5,14]],"date-time":"2010-05-14T02:06:23Z","timestamp":1273802783000},"page":"3-16","source":"Crossref","is-referenced-by-count":2,"title":["Effect of Practice on Stepping Movements Onto Laterally Compliant Raised Structures: Age Differences in Healthy Males"],"prefix":"10.1177","volume":"52","author":[{"given":"Bing-Shiang","family":"Yang","sequence":"first","affiliation":[{"name":"National Chiao Tung University, Hsinchu, Taiwan,"}]},{"given":"James A.","family":"Ashton-Miller","sequence":"additional","affiliation":[{"name":"University of Michigan, Ann Arbor"}]}],"member":"179","published-online":{"date-parts":[[2010,5,13]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.1016\/0022-4375(92)90035-8"},{"volume-title":"National census of fatal occupational injuries in 2001","year":"2001","author":"Bureau of Labor Statistics.","key":"atypb2"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1016\/0022-4375(91)90010-S"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1093\/geronb\/50B.1.P33"},{"key":"atypb5","doi-asserted-by":"publisher","DOI":"10.1016\/S0001-4575(99)00124-4"},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-4375(01)00054-8"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1016\/0301-0082(95)98601-Z"},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1080\/00222890209601929"},{"key":"atypb9","doi-asserted-by":"publisher","DOI":"10.1016\/0966-6362(95)90808-6"},{"key":"atypb10","doi-asserted-by":"publisher","DOI":"10.3233\/IES-2000-0037"},{"key":"atypb11","doi-asserted-by":"publisher","DOI":"10.1016\/0020-1383(93)90156-Z"},{"key":"atypb12","doi-asserted-by":"publisher","DOI":"10.1177\/03635465010290021701"},{"key":"atypb13","doi-asserted-by":"publisher","DOI":"10.1111\/j.1553-2712.1998.tb02571.x"},{"key":"atypb14","doi-asserted-by":"publisher","DOI":"10.1093\/gerona\/57.8.M496"},{"key":"atypb15","doi-asserted-by":"publisher","DOI":"10.1016\/S0042-6989(98)00288-0"},{"key":"atypb16","doi-asserted-by":"publisher","DOI":"10.1093\/gerona\/50A.1.M28"},{"key":"atypb17","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9290(99)00116-5"},{"volume-title":"Emergency room injuries adults 65 and older","year":"2005","author":"U.S. Consumer Product Safety Commission.","key":"atypb18"},{"key":"atypb19","doi-asserted-by":"publisher","DOI":"10.1093\/geronj\/48.Special_Issue.56"},{"volume-title":"Control of frontal-plane balance on a laterally-compliant raised structure. 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