aImputed data used for neuromuscular impairments. Odds are presented for every one SD worse impairment (decrease in attribute). Total N=391; n = 134 with decline in function; n = 26 with persistently low function; n = 48 with persistently high function (reference group). Minimal Detectable Change (MDC90) = 6.3. Multivariable logistic regression model adjusted for age, sex, overweight/obesity status, and number of comorbidities. Additional covariates tested but not included in the model were not significant and did not alter the relationship between the predictors and outcome by ≥20%: race, education, Digit Symbol Substitution Test score, visual impairment, depression, and sensory loss. OR = odds ratio. CI = confidence interval. ROM = range of motion.