Objective This study aimed to examine the association of independence in activities of daily living with the loads during step ascent motion and other motor functions in 32 nursing home–residing elderly individuals. Design Independence in activities of daily living was assessed by using the Functional Independence Measure. The loads at the upper (i.e., pulling up) and lower (i.e., pushing up) levels during the step ascent task was measured on a step ascent platform. Hip extensor, knee extensor, plantar flexor muscle, and quadriceps setting strengths; lower extremity agility using the stepping test; and hip and knee joint pain severities were measured. One-legged stance and functional reach distance for balance and maximal walking speed, timed up-and-go time, five-chair-stand time, and step ascent time were also measured to assess mobility. Results Stepwise regression analysis revealed that the load at pushing up during step ascent motion and timed up-and-go time were significant and independent determinants of Functional Independence Measure score. Functional Independence Measure score decreased with decreased load at pushing up and increased timed up-and-go time. Conclusions The study results suggest that depending on task specificity, both one step up task's push-up peak load during step ascent motion and timed up-and-go can partially explain activities of daily living's Functional Independence Measure score in nursing home–residing elderly individuals. Lower extremity muscle strength, agility, pain, or balance measures did not add to the prediction.
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