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For a fair assessment, comparisons must be made against a reference standing after controlling for sex, anthropometry, and walking characteristics. This study aimed to develop statistical models that predict the lower-limb kinematics and kinetics of walking across the lifespan of healthy participants, using seven simple covariates. Sixteen statistical models predicted 16 joint kinematics and kinetics during walking using the covariates of sex, age, height, mass, side (laterality), walking speed, and cadence, which were developed based on 301 participants between three to 91 years old. The root mean squared error (RMSE) ranged from 4.71\u00b0 to 7.97\u00b0 for joint angles, within 0.07\u00a0N\/kg for ground reaction forces, 0.09 to 0.15 Nm\/kg for joint moments, and 0.33 to 0.39\u00a0W\/kg for joint powers. We provide both online and local apps which can be easily used by clinicians and scientists to generate normative walking data with uncertainty values, which can be used for movement impairment analysis (\n                    <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"https:\/\/github.com\/EmanuelSommer\/ShinyFOSR\" ext-link-type=\"uri\">https:\/\/github.com\/EmanuelSommer\/ShinyFOSR<\/jats:ext-link>\n                    ) .\n                  <\/jats:p>","DOI":"10.1186\/s12984-025-01768-9","type":"journal-article","created":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T14:31:48Z","timestamp":1761316308000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Predicting normative walking biomechanics across the lifespan using seven simple features"],"prefix":"10.1186","volume":"22","author":[{"given":"Bernard X. 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