Cardiorespiratory fitness during cardiopulmonary exercise testing in individuals with unilateral lower imputation
DOI:
https://doi.org/10.33233/rbfex.v20i5.4824Keywords:
disabled persons; oxygen consumption; rehabilitationAbstract
Introduction: The lower limb amputation impacts the mobility of individuals, which can lead to low cardiorespiratory fitness. Maximum oxygen consumption (VO2max) is traditionally used to describe cardiorespiratory fitness. However, its achievement is not always feasible in populations with functional limitations and, therefore, analysis at submaximal levels of effort can be an efficient strategy. Objective: To test the hypothesis that individuals with unilateral lower limb amputation have lower cardiorespiratory fitness at different effort intensities compared to individuals without amputation. Methods: Cross-sectional study with 6 individuals with lower limb amputation and 10 individuals without amputation. Cardiorespiratory fitness was investigated by the cardiopulmonary exercise test, considering absolute and relative VO2peak, ventilatory threshold 1 (VT1) and Optimal Cardiorespiratory Point (POC). Results: The amputees had lower absolute and relative VO2peak than non-amputates. The absolute value of POC, time and load did not differ between groups, but the group with amputation presented the POC in a higher percentage of VO2peak (p = 0.007) and in a lower relative and absolute VO2 (p = 0.004 and p = 0.009, respectively). In LV1, there was no difference between groups in time, load and percentage of VO2peak, however amputees had lower relative and absolute VO2 (p = 0.046 and p = 0.032, respectively). Conclusion: Individuals with lower limb amputation had lower cardiorespiratory fitness at different effort intensities when compared to individuals without amputation, but they had the highest efficiency between the respiratory and circulatory systems in a higher %VO2peak.
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Copyright (c) 2021 Roberto Miranda Ramos Costa, Patrícia Marques Aroso Lisboa de Castro, Mauro Augusto dos Santos, Míriam Raquel Meira Mainenti, Agnaldo José Lopes, Patrícia dos Santos Vigário
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