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논문 기본 정보

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학술저널
저자정보
Henrique Silveira Costa (Medical School and Hospital das Clínicas of the Universidade Federal) Márcia Maria Oliveira Lima (Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)) Susan Martins Lage (Universidade Federal de Minas Gerais (UFMG)) Fábio Silva Martins da Costa (Medical School and Hospital das Clínicas of the Universidade Federal) Pedro Henrique Scheidt (Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)) Manoel Otávio da Costa Rocha (Medical School and Hospital das Clínicas of the Universidade Federal)
저널정보
한국운동재활학회 Journal of exercise rehabilitation Journal of exercise rehabilitation Vol.14 No.5
발행연도
2018.1
수록면
844 - 850 (7page)

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Chagas heart disease (CHD) leads to a progressive functional impairment. Field tests, as the 6-min walk test (6MWT) and the incremental shuttle walk test (ISWT), may be inexpensive approaches in the evaluation of functional capacity of these patients. The present study was addressed to compare the 6MWT and the ISWT measures, and to determine the accuracy of these tests in the identification of functional impairment in patients with CHD. Thirty-five patients with CHD (47.1± 8.2 years, NYHA I–III) were evaluated by echocardiography, cardiopulmonary exercise test (CPET), 6MWT, and ISWT. Correlations between the CPET (peak oxygen uptake [peak VO2] and the ratio between ventilation and the carbon dioxide production [VE/VCO2 slope]) and the field tests (walking distances) were also performed. The receiver operating characteristic (ROC) curve was selected to identify the best distances related to identify those patients with functional impairment. There was no difference between distances walked during the 6MWT and ISWT (P= 0.694). The Bland-Altman analysis showed good agreement between the field tests. Both 6MWT and ISWT correlated with peak VO2 (r= 0.577, P< 0.001 and r= 0.587, P< 0.001, respectively) and ISWT correlated with VE/VCO2 slope (r= -0.339, P= 0.003). The cutoff distances of 6MWT and ISWT to identify patients with peak VO2 less than 20 mL/kg/ min were 520 m and 400 m, respectively, with no difference between the areas under ROC curves (P= 0.276). Both the 6MWT and the ISWT demonstrated accuracy in identify functional impairment in patients with CHD, being useful tools for the risk stratification of these patients.

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