Which trunk muscle parameter is the best predictor for physical function in older adults?

BackgroundDespite preliminary evidence demonstrating the relevance of trunk muscle strength for physical function in older adults, it is not clear which muscle-related parameter best predictor functions. Therefore, study aimed to compare morphology or parameters regarding their predictive ability functions.MethodsSeventy-four adults (38 men, 36 women, mean age 76.85 years) were tested maximum absolute and relative isokinetic flexion extension strength, lean mass, quality. Functional assessment included normal fast walking speed, repeated sit-to-stand transfer, timed up go, postural sway during a closed-feet semi-tandem stance adjusted body height. Pearson's correlations used relationship between unadjusted weight Linear regression analysis including sex as co-variables was performed functional test parameters.ResultsRelative back most consistent significant all tests (p = 0.004–0.04) except sway. Relative related speed 0.024). Trunk mass go performance 0.024).ConclusionRelative associated with better nearly standard while seem play minor role. Our findings emphasize importance especially extensor muscles, adults.