Lucas de Assis Pereira Cacau1, Vitor Oliveira Carvalho2, Alessandro Dos Santos Pin3, Carlos Raphael Araujo Daniel4, Daisy Satomi Ykeda5, Eliane Maria de Carvalho6, Juliana Valente Francica7, Luíza Martins Faria8, Mansueto Gomes-Neto9,10, Marcelo Fernandes9,11, Marcelo Velloso12, Marlus Karsten13, Patrícia de Sá Barros14, Valter Joviniano de Santana-Filho6. 1. Departamento de Fisioterapia e Pós-Graduaçáo em Ciências da Saúde da Universidade Federal de Sergipe, Aracaju, Brazil, as well as The GREAT Group (Grupo de Estudos em Atividade Física), Brazil. lucas.cacau@yahoo.com.br. 2. Departamento de Fisioterapia da Universidade Federal de Uberlândia, Uberlândia, Brazil. 3. Departamento de Fisioterapia da Universidade Federal do Amazonas, Coari, Brazil. 4. Departamento de Estatística e Ciências Atuariais da Universidade Federal de Sergipe, Aracaju, Brazil. 5. Departamento de Fisioterapia da Universidade Estadual do Piauí, Teresina, Brazil. 6. Departamento de Fisioterapia e Pós-Graduaçáo em Ciências da Saúde da Universidade Federal de Sergipe, Aracaju, Brazil, as well as The GREAT Group (Grupo de Estudos em Atividade Física), Brazil. 7. Departamento de Fisioterapia da Universidade São Judas, São Paulo, Brazil. 8. Centro Universitário Estácio de Santa Catarina - São José, Brazil. 9. The GREAT Group. 10. Departamento de Fisioterapia da Universidade Federal da Bahia, Salvador, Brazil. 11. Departamento de Fisioterapia da Universidade Presbiteriana Mackenzie, São Paulo, Brazil. 12. Departamento de Fisioterapia da Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. 13. Departamento de Fisioterapia da Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil. 14. Departamento de Fisioterapia da Universidade Federal de Goiás, Jataí, Brazil.
Abstract
INTRODUCTION: Brazil is a country with great climatic, socioeconomic, and cultural differences that does not yet have a reference value for the 6-min walk test (6MWT) in healthy children. To avoid misinterpretation, the use of equations to predict the maximum walk distance should be established in each country. OBJECTIVES: We sought to establish reference values and to develop an equation to predict the 6-min walk distance for healthy children in Brazil. METHODS: This is a cross-sectional multi-center study that included 1,496 healthy children, aged 7 to 12 y, assessed across 11 research sites in all regions of Brazil, and recruited from public and private schools in their respective regions. Each child was assessed for weight and height. Walk distance was our main outcome. An open-source software environment for statistical computing was used for statistical analysis. RESULTS: We observed a higher average distance walked by boys (531.1 m) than by girls (506.2 m), with a difference of 24.9 m (P < .001). We established 6MWT reference values for boys with the following equation: Distance = (16.86 × age) + (1.89 × Δ heart rate) - (0.80 × weight) + (336.91 × R1) + (360.91 × R2). For girls the equation is as follows: Distance = (13.54 × age) + (1.62 × Δ heart rate) - (1.28 × weight) + (352.33 × R1) + (394.81 × R2). CONCLUSION: Reference values were established for the 6MWT in healthy children aged 7-12 y in Brazil.
INTRODUCTION: Brazil is a country with great climatic, socioeconomic, and cultural differences that does not yet have a reference value for the 6-min walk test (6MWT) in healthy children. To avoid misinterpretation, the use of equations to predict the maximum walk distance should be established in each country. OBJECTIVES: We sought to establish reference values and to develop an equation to predict the 6-min walk distance for healthy children in Brazil. METHODS: This is a cross-sectional multi-center study that included 1,496 healthy children, aged 7 to 12 y, assessed across 11 research sites in all regions of Brazil, and recruited from public and private schools in their respective regions. Each child was assessed for weight and height. Walk distance was our main outcome. An open-source software environment for statistical computing was used for statistical analysis. RESULTS: We observed a higher average distance walked by boys (531.1 m) than by girls (506.2 m), with a difference of 24.9 m (P < .001). We established 6MWT reference values for boys with the following equation: Distance = (16.86 × age) + (1.89 × Δ heart rate) - (0.80 × weight) + (336.91 × R1) + (360.91 × R2). For girls the equation is as follows: Distance = (13.54 × age) + (1.62 × Δ heart rate) - (1.28 × weight) + (352.33 × R1) + (394.81 × R2). CONCLUSION: Reference values were established for the 6MWT in healthy children aged 7-12 y in Brazil.
Authors: Andreza L Gomes; Vanessa A Mendonça; Tatiane Dos Santos Silva; Crislaine K V Pires; Liliana P Lima; Alcilene M Gomes; Ana Cristina R Camargos; Camila D C Neves; Ana C R Lacerda; Hércules R Leite Journal: PLoS One Date: 2018-11-01 Impact factor: 3.240