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Hemodynamic and Metabolic Responses to Moderate and Vigorous Cycle Ergometry in Men Who Have Had Transtibial Amputation

Author

Listed:
  • Kionte K. Storey

    (Department of Kinesiology, California State University, San Marcos, CA 92096-0001, USA)

  • Adam Geschwindt

    (Department of Kinesiology, California State University, San Marcos, CA 92096-0001, USA)

  • Todd A. Astorino

    (Department of Kinesiology, California State University, San Marcos, CA 92096-0001, USA)

Abstract

Adults who have had an amputation face barriers to having an active lifestyle which attenuates cardiorespiratory fitness. Prior studies in amputees typically involve treadmill walking or arm ergometry, yet physiological responses to bilateral leg cycling are less understood. This study assessed the hemodynamic and metabolic responses to moderate and vigorous cycle ergometry in men who have had a transtibial amputation (TTA). Five men who had had a unilateral TTA (age = 39 ± 15 yr) and six controls (CONs) without an amputation (age = 31 ± 11 yr) performed two 20 min bouts of cycling differing in intensity. Cardiac output (CO), stroke volume (SV), and oxygen consumption (VO 2 ) were measured during moderate intensity continuous exercise (MICE) and high intensity interval exercise (HIIE) using thoracic impedance and indirect calorimetry. In response to MICE and HIIE, the HR and VO 2 levels were similar ( p > 0.05) between groups. Stroke volume and CO were higher ( p < 0.05) in the CONs, which was attributed to their higher body mass. In men with TTAs, HIIE elicited a peak HR = 88%HRmax and substantial blood lactate accumulation, representing vigorous exercise intensity. No adverse events were exhibited in the men with TTAs. The men with TTAs show similar responses to MICE and HIIE versus the CONs.

Suggested Citation

  • Kionte K. Storey & Adam Geschwindt & Todd A. Astorino, 2024. "Hemodynamic and Metabolic Responses to Moderate and Vigorous Cycle Ergometry in Men Who Have Had Transtibial Amputation," IJERPH, MDPI, vol. 21(4), pages 1-13, April.
    • Handle: RePEc:gam:jijerp:v:21:y:2024:i:4:p:450-:d:1370972
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    References listed on IDEAS

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    1. Loeke van Schaik & Jan H B Geertzen & Pieter U Dijkstra & Rienk Dekker, 2019. "Metabolic costs of activities of daily living in persons with a lower limb amputation: A systematic review and meta-analysis," PLOS ONE, Public Library of Science, vol. 14(3), pages 1-24, March.
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