Physical Activity and the Association With Self-Reported Impairments, Walking Limitations, Fear of Falling and Incidence of Falls in Persons With Late Effects of Polio.

The purpose of this study was to determine the association between physical activity and self-reported disability in ambulatory persons with mild to moderate late effects of polio (N=81, mean age 67 years). The outcome measures were: Physical Activity and Disability Survey (PADS), a pedometer, Self-reported Impairments in Persons with Late Effects of Polio Scale (SIPP), Walking Impact Scale (Walk-12), Falls Efficacy Scale - International (FES-I) and self-reported incidence of falls. The participants were physically active on average 158 minutes per day and walked 6212 steps daily. Significant associations were found between PADS and Walk-12 (r = -0.31, p < 0.001), and between the number of steps and SIPP, Walk-12 and FES-I (r = -0.22 to -0.32, p < 0.05). Walk-12 and age explained 14% of the variance in PADS and FES-I explained 9% of the variance in number of steps per day. Thus, physical activity was only weakly to moderately associated with self-reported disability.