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The goal of this study was to evaluate the validity of angular momenta in older individuals with and without transtibial amputation during walking through assessments of construct and criterion validity. Construct and criterion validity were evaluated through correlations of momenta with clinical balance measures and prospective fall numbers over 12\u00a0months, respectively. For context, falls were categorized by pattern and scenario. Angular momenta of walking demonstrated evidence of construct and criterion validity in both groups through\n                    <jats:italic>moderate<\/jats:italic>\n                    -to-\n                    <jats:italic>strong<\/jats:italic>\n                    correlations with clinical balance measures and prospective falls. These relationships also varied between groups. The most common pattern and scenario of falls in both groups were trips and level-ground walking, respectively. This study contributes evidence that angular momentum during level-ground walking is a valid measure of dynamic balance in older persons with and without transtibial amputation.\n                  <\/jats:p>","DOI":"10.1123\/jab.2025-0300","type":"journal-article","created":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T16:46:52Z","timestamp":1778518012000},"page":"419-424","source":"Crossref","is-referenced-by-count":0,"title":["Assessing the Validity of Whole-Body and Segmental Angular Momenta During Walking in Older Individuals With and Without Transtibial Limb Loss"],"prefix":"10.1123","volume":"42","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-9015-1450","authenticated-orcid":true,"given":"Arianna S.","family":"Monteiro","sequence":"first","affiliation":[{"name":"Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9022-1971","authenticated-orcid":true,"given":"Nicholas P.","family":"Fey","sequence":"additional","affiliation":[{"name":"Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2330-4619","authenticated-orcid":true,"given":"Matthew J.","family":"Major","sequence":"additional","affiliation":[{"name":"Jesse Brown VA Medical Center, Chicago, IL, USA"},{"name":"Department of Physical Medicine and Rehabilitation, Department of Biomedical Engineering, Department of Mechanical Engineering, Northwestern University, Chicago, IL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"key":"r1","series-title":"Front Med","doi-asserted-by":"publisher","DOI":"10.3389\/fmed.2022.1019094","article-title":"Risk factors for falls among community-dwelling older adults: a systematic review and meta-analysis","volume":"9","author":"Li Y","year":"2023","unstructured":"Li Y, Hou L, Zhao H, Xie R, Yi Y, Ding X. 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