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Does unilateral transtibial amputation lead to greater metabolic demand during walking?

Does unilateral transtibial amputation lead to greater metabolic demand during walking?. Elizabeth Russell Esposito, PhD; Kelly M. Rodriguez, MS; Christopher A. Ràbago, PT, PhD; Jason M. Wilken, PT, PhD. Aim

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Does unilateral transtibial amputation lead to greater metabolic demand during walking?

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  1. Does unilateral transtibial amputation lead to greater metabolic demandduring walking? Elizabeth Russell Esposito, PhD; Kelly M. Rodriguez, MS; Christopher A. Ràbago, PT, PhD; Jason M. Wilken, PT, PhD

  2. Aim • Compare metabolic demand of walking in young, active individuals with traumatic unilateral transtibial amputation (TTA) and nondisabled controls. • Relevance • Previous literature reports greater metabolic demand of walking following transtibial amputation. • However, most research focuses on relatively older, less active, and often dysvascular amputees, while service-members with traumatic amputation are typically young, fit, and highly active.

  3. Method • Heart rate (HR), rate of oxygen consumption, and rating of perceived exertion (RPE) were calculated as subjects walked at a self-selected velocity and at 5 standardized velocities based on leg length. • TTA group also completed the Prosthetics Evaluation Questionnaire.

  4. Results • Oxygen consumption, net oxygen consumption, and RPE did not differ between groups. • Compared with controls, HR was greater in TTA group and increased to a greater extent with velocity. • Overall, TTA group rated their walking abilities as high.

  5. Conclusion • This is the first study to report equivalent metabolic demand between persons with amputation and controls walking at the same velocity. • These results may reflect the physical fitness of young servicemembers with traumatic amputation and may serve to guide future outcome expectations.

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