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This study aims to perform a factor analysis, including gait kinematic and kinetic parameters in older adults to establish determinant gait domains. Additionally, this study aims to identify which domains differentiate those without and with functional disability. Methods: Through a cross-sectional design, older adults aged 60 and over (n = 35 without and n = 25 with functional disability) were analyzed during overground gait. A principal component analysis (PCA) was used to determine principal components from gait parameters previously demonstrated to express age-related effects (spatiotemporal parameters, sagittal ankle moment and power, ground reaction forces peak, and tridimensional lower limb joints range of motion and positions at heel strike and toe-off). Results: Pace, variability, propulsion, hip and knee control, transverse ankle control, asymmetry, sagittal ankle control, frontal ankle control, frontal hip control, and pre-swing control domains explained 83.90% of the total gait variance in older adults. pace and frontal hip control distinguished individuals with disabilities. Conclusions: PCA identified ten gait domains in older adults. Pace and frontal hip control distinguished disabilities, revealing cautious walking patterns and weaker hip abductor strength.<\/jats:p>","DOI":"10.3390\/jfmk10020140","type":"journal-article","created":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T03:43:37Z","timestamp":1745379817000},"page":"140","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Kinematic and Kinetic Gait Principal Component Domains in Older Adults With and Without Functional Disability: A Cross-Sectional Study"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0123-4960","authenticated-orcid":false,"given":"Juliana","family":"Moreira","sequence":"first","affiliation":[{"name":"CIR, E2S, Polytechnic of Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 4200-072 Porto, Portugal"},{"name":"Research Center in Physical Activity, Health and Leisure, Faculty of Sports, University of Porto, 4200-450 Porto, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8661-3080","authenticated-orcid":false,"given":"Bruno","family":"Cunha","sequence":"additional","affiliation":[{"name":"CINTESIS@RISE, CINTESIS.UPT, Portucalense University, Rua Dr. Ant\u00f3nio Bernardino de Almeida 541, 4200-072 Porto, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4498-573X","authenticated-orcid":false,"given":"Jos\u00e9","family":"F\u00e9lix","sequence":"additional","affiliation":[{"name":"Department of Physiotherapy, Institute of Health of the North, Escola Superior de Sa\u00fade do Vale do Ave (ESSVA), Cooperativa de Ensino Superior Polit\u00e9cnico e Universit\u00e1rio (CESPU), Rua Jos\u00e9 Ant\u00f3nio Vidal 81, 4760-409 Vila Nova de Famalic\u00e3o, Portugal"},{"name":"Department of Medical Sciences, University of Aveiro, Agras do Crasto, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7394-7604","authenticated-orcid":false,"given":"Rubim","family":"Santos","sequence":"additional","affiliation":[{"name":"CIR, E2S, Polytechnic of Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 4200-072 Porto, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9528-1463","authenticated-orcid":false,"given":"Andreia S. 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