The six-minute walk test and body weight-walk distance product in healthy Brazilian subjects


Autoria(s): Iwama, A. M.; Andrade, G. N.; Shima, P.; Tanni, S. E.; Godoy, I.; Dourado, V. Z.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/11/2009

Resumo

We assessed the 6-min walk distance (6MWD) and body weight x distance product (6MWw) in healthy Brazilian subjects and compared measured 6MWD with values predicted in five reference equations developed for other populations. Anthropometry, spirometry, reported physical activity, and two walk tests in a 30-m corridor were evaluated in 134 subjects (73 females, 13-84 years). Mean 6MWD and 6MWw were significantly greater in males than in females (622 ± 80 m, 46,322 ± 10,539 kg.m vs 551 ± 71 m, 36,356 ± 8,289 kg.m, P < 0.05). Four equations significantly overestimated measured 6MWD (range, 32 ± 71 to 137 ± 74 m; P < 0.001), and one significantly underestimated it (-36 ± 86 m; P < 0.001). 6MWD significantly correlated with age (r = -0.39), height (r = 0.44), body mass index (r = -0.24), and reported physical activity (r = 0.25). 6MWw significantly correlated with age (r = -0.21), height (r = 0.66) and reported physical activity (r = 0.25). The reference equation devised for walk distance was 6MWDm = 622.461 - (1.846 x Ageyears) + (61.503 x Gendermales = 1; females = 0); r2 = 0.300. In an additional group of 85 subjects prospectively studied, the difference between measured and the 6MWD predicted with the equation proposed here was not significant (-3 ± 68 m; P = 0.938). The measured 6MWD represented 99.6 ± 11.9% of the predicted value. We conclude that 6MWD and 6MWw variances were adequately explained by demographic and anthropometric attributes. This reference equation is probably most appropriate for evaluating the exercise capacity of Brazilian patients with chronic diseases.

Formato

1080-1085

Identificador

http://dx.doi.org/10.1590/S0100-879X2009005000032

Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 42, n. 11, p. 1080-1085, 2009.

0100-879X

http://hdl.handle.net/11449/11298

10.1590/S0100-879X2009005000032

S0100-879X2009001100013

WOS:000271163100018

S0100-879X2009001100013.pdf

Idioma(s)

eng

Publicador

Associação Brasileira de Divulgação Científica (ABRADIC)

Relação

Brazilian Journal of Medical and Biological Research

Direitos

openAccess

Palavras-Chave #Walking #Exercise #Rehabilitation #6MWD #6MWw
Tipo

info:eu-repo/semantics/article