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Correlation Between Functional Ability and Physical Activity in Individuals With Transtibial Amputations

A Cross-Sectional Study

Pepin, Marie-Eve, PT, OMPT, MSPT, DPT; Devour, Alegra, DPT; Coolsaet, Robin, DPT; Galen, Sujay, PT, PhD

Cardiopulmonary Physical Therapy Journal: April 2019 - Volume 30 - Issue 2 - p 70–78
doi: 10.1097/CPT.0000000000000091
Research Report

Purpose: The aim of this study was to investigate the association between functional ability and physical activity (PA) in individuals with transtibial amputations.

Methods: 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.

Results: 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).

Conclusions: 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 (

Wayne State University's Institutional Review Board approval number: 073215M1E.

The authors declare no conflicts of interest.

© 2019 Cardiovascular and Pulmonary Section, APTA
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