How to Score the Peak Oxygen Consumption Obtained Through Cardiopulmonary Exercise Test in Individuals after Stroke?

Ludmylla Ferreira Quintino; Larissa Tavares Aguiar; Sherindan Ayessa Ferreira de Brito; Maria Teresa Ferreira Dos Reis; Janaine Cunha Polese; Christina Danielli Coelho de Morais Faria

doi:10.1016/j.jstrokecerebrovasdis.2022.106314

How to Score the Peak Oxygen Consumption Obtained Through Cardiopulmonary Exercise Test in Individuals after Stroke?

J Stroke Cerebrovasc Dis. 2022 Apr;31(4):106314. doi: 10.1016/j.jstrokecerebrovasdis.2022.106314. Epub 2022 Feb 1.

Authors

Ludmylla Ferreira Quintino¹, Larissa Tavares Aguiar², Sherindan Ayessa Ferreira de Brito¹, Maria Teresa Ferreira Dos Reis¹, Janaine Cunha Polese², Christina Danielli Coelho de Morais Faria³

Affiliations

¹ Department of Physiotherapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
² Department of Physiotherapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Faculdade Ciências Médicas de Minas Gerais, Belo Horizonte, Brazil.
³ Department of Physiotherapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil. Electronic address: cdcmf@ufmg.br.

PMID: 35121535
DOI: 10.1016/j.jstrokecerebrovasdis.2022.106314

Abstract

Objectives: To compare five distinct methods to score the peak of oxygen consumption (VO2peak) obtained through the cardiopulmonary exercise testing (CPET) in individuals after stroke.

Materials and methods: The VO_2peak was obtained through the CPET with five methods: method-1: the highest value of the test; method-2: the highest value of the last 30 seconds at peak exercise; method-3: the mean of the last 30 seconds at peak exercise; method-4: the mean of the last 20 seconds at peak exercise; method-5: the highest value averaged of the 3 last blocks of 10 seconds at peak exercise. The coefficient of variance (CV) and the mean differences with 95% confidence interval (CI) between the scoring methods were calculated. A post-hoc test (Tukey HSD) was performed to calculate the adjusted 95%CI.

Results: Fifty-nine individuals were included (54±12 years, 56±60 months after stroke). The CV of the methods 1-to-5 were, respectively: 27.91%, 25.77%, 23.38%, 23.83%, and 23.33%. There was no difference between method-1 and method-2 (95%CI: -1.10 to 4.69) and between methods 3 to 5: method-3 and method-4 (95%CI: -2.97 to 2.82); method-3 and method-5 (95%CI: -3.57 to 2.22); method-4 and method-5 (95%CI: -3.49 to 2.30). However, method-1 and -2 provided VO_2peak values different from that of methods 3-to-5.

Conclusions: The scoring method of obtaining the VO_2peak has an influence on its magnitude. Since methods 3-to-5 showed lower CV and provided similar values, they should be used to calculate the VO_2peak obtained through the CPET in individuals after stroke.

Keywords: Cardiorespiratory fitness; Exercise test; Oxygen consumption; Stroke.

MeSH terms

Cardiorespiratory Fitness*
Exercise
Exercise Test
Humans
Oxygen Consumption
Stroke* / diagnosis