The aim of this study was to investigate the association between functional ability and physical activity (PA) in individuals with transtibial amputations.
Twenty participants with unilateral transtibial amputation were recruited from outpatient prosthetic fitting clinics. Subjects completed the amputee mobility predictor (AMP), the L-Test, timed up and go (TUG), 2-minute walk test (TMWT), and self-reported activity restrictions questionnaire (Prosthesis Evaluation Questionnaire-Mobility Subscale). The subject's PA was monitored continuously for 7 days using a body-worn PA monitor. Descriptive statistics, comparison of mean values, and analysis of associations were performed with significance set at P < .05.
Data from 19 subjects were used for analysis. Descriptive analysis indicated that the participants spent on average 19.7 (SD = 0.5) hours per day laying/sitting, 3.5 (SD = 0.4) hours standing, 0.77 (SD = 0.07) hours stepping, and walked an average of 3145 (SD = 378) steps/day. There was a moderate to good correlation between the AMP and the average steps/day (r = 0.535, P = .009) and a fair correlation between the TMWT, the TUG, and steps per day (r = 0.404 and r = −0.442, respectively, P < .05).
Individuals with transtibial amputations on average recorded 3145 steps/day, placing them in the sedentary category. The number of steps per day had a moderate to good correlation with the AMP and a fair correlation with the TUG and TMWT.
Physical Therapy Program, Department of Health Care Sciences, College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI.
Correspondence: Marie-Eve Pepin, DPT, Physical Therapy Program, Wayne State University, 259 Mack Avenue, Detroit, MI 48201 (firstname.lastname@example.org).
Wayne State University's Institutional Review Board approval number: 073215M1E.
The authors declare no conflicts of interest.