{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T16:30:58Z","timestamp":1753893058677,"version":"3.41.2"},"reference-count":28,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,6,20]],"date-time":"2023-06-20T00:00:00Z","timestamp":1687219200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Aging"],"abstract":"<jats:p><jats:bold>Introduction:<\/jats:bold> Lower-limb physical function declines with age and contributes to a greater difficulty in performing activities of daily living. Existing assessments of lower-limb function assess one dimension of movement in isolation or are not time-efficient, which discourages their use in community and clinical settings. We aimed to address these limitations by assessing the inter-rater reliability and convergent validity of a new multimodal functional lower-limb assessment (FLA).<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> FLA consists of five major functional movement tasks (rising from a chair, walking gait, stair ascending\/descending, obstacle avoidance, and descending to a chair) performed consecutively. A total of 48 community-dwelling older adults (32 female participants; age: 71 \u00b1 6\u00a0years) completed the FLA as well as timed up-and-go, 30-s sit-to-stand, and 6-min walk tests.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> Slower FLA time was correlated with a slower timed up-and-go test (<jats:italic>\u03c1<\/jats:italic> = 0.70), less sit-to-stand repetitions (<jats:italic>\u03c1<\/jats:italic> = \u22120.65), and a shorter distance in the 6-min walk test (<jats:italic>\u03c1<\/jats:italic> = \u22120.69; all, <jats:italic>p<\/jats:italic> &amp;lt; 0.001). Assessments by two raters were not different (12.28 \u00b1 3.86\u00a0s versus 12.29 \u00b1 3.83\u00a0s, <jats:italic>p<\/jats:italic> = 0.98; inter-rater reliability <jats:italic>\u03c1<\/jats:italic> = 0.993, <jats:italic>p<\/jats:italic> &amp;lt; 0.001) and were statistically equivalent (via equivalence testing). Multiple regression and relative weights analyses demonstrated that FLA times were most predicted by the timed up-and-go performance [adjusted <jats:italic>R<\/jats:italic><jats:sup><jats:italic>2<\/jats:italic><\/jats:sup> = 0.75; <jats:italic>p<\/jats:italic> &amp;lt; 0.001; raw weight 0.42 (95% CI: 0.27, 0.53)].<\/jats:p><jats:p><jats:bold>Discussion:<\/jats:bold> Our findings document the high inter-rater reliability and moderate-strong convergent validity of the FLA. These findings warrant further investigation into the predictive validity of the FLA for its use as an assessment of lower-limb physical function among community-dwelling older adults.<\/jats:p>","DOI":"10.3389\/fragi.2023.1196389","type":"journal-article","created":{"date-parts":[[2023,6,20]],"date-time":"2023-06-20T06:26:28Z","timestamp":1687242388000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Convergent validity and inter-rater reliability of a lower-limb multimodal physical function assessment in community-dwelling older adults"],"prefix":"10.3389","volume":"4","author":[{"given":"Myles W.","family":"O\u2019Brien","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heather F.","family":"Neyedli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laurent","family":"Bosquet","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brianna","family":"Leadbetter","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alex","family":"Smith","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francois","family":"Gallant","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pamela","family":"Tanguay","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mathieu","family":"B\u00e9langer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Said","family":"Mekari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1965","published-online":{"date-parts":[[2023,6,20]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"111","DOI":"10.1164\/ajrccm.166.1.at1102","article-title":"Guidelines for the six-minute walk test","volume":"166","author":"Ats Statement","year":"2002","journal-title":"Am. 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