BACKGROUND: Despite widespread use of the incremental shuttle walk distance (ISWD), there are no reference equations for predicting it. OBJECTIVES: We aimed to evaluate ISWD in healthy subjects and to establish a reference equation for its prediction. METHODS: 131 Brazilian individuals (61 males; 59 ± 10 years) performed 2 walk tests in a 10-m long corridor. We assessed height, weight, body mass index, forced expiratory volume in 1 s, forced vital capacity and self-reported physical activity. RESULTS: Mean ISWD was greater in males than in females (606 ± 167 vs. 443 ± 117 m; p < 0.001). ISWD correlated significantly (p < 0.05) with age (r = -0.51), height (r = 0.54) and weight (r = 0.20). A predictive model including age, height, weight and gender explained 50.3% of the ISWD variance. In an additional group of 20 subjects prospectively studied, the difference between measured and predicted ISWD was not statistically significant (534 ± 84 vs. 552 ± 87 m, respectively), representing 97 ± 12% of the predicted value calculated with our reference equation for ISWD. CONCLUSIONS: This reference equation including demographic and anthropomorphic attributes could be useful for interpreting the walking performance of patients with chronic diseases that affect exercise capacity.
BACKGROUND: Despite widespread use of the incremental shuttle walk distance (ISWD), there are no reference equations for predicting it. OBJECTIVES: We aimed to evaluate ISWD in healthy subjects and to establish a reference equation for its prediction. METHODS: 131 Brazilian individuals (61 males; 59 ± 10 years) performed 2 walk tests in a 10-m long corridor. We assessed height, weight, body mass index, forced expiratory volume in 1 s, forced vital capacity and self-reported physical activity. RESULTS: Mean ISWD was greater in males than in females (606 ± 167 vs. 443 ± 117 m; p < 0.001). ISWD correlated significantly (p < 0.05) with age (r = -0.51), height (r = 0.54) and weight (r = 0.20). A predictive model including age, height, weight and gender explained 50.3% of the ISWD variance. In an additional group of 20 subjects prospectively studied, the difference between measured and predicted ISWD was not statistically significant (534 ± 84 vs. 552 ± 87 m, respectively), representing 97 ± 12% of the predicted value calculated with our reference equation for ISWD. CONCLUSIONS: This reference equation including demographic and anthropomorphic attributes could be useful for interpreting the walking performance of patients with chronic diseases that affect exercise capacity.
Authors: Camila D C Neves; Ana Cristina Rodrigues Lacerda; Vanessa K S Lage; Liliana P Lima; Sueli F Fonseca; Núbia C P de Avelar; Mauro M Teixeira; Vanessa A Mendonça Journal: PLoS One Date: 2015-02-06 Impact factor: 3.240
Authors: Eloisa Sanches Pereira do Nascimento; Luciana Maria Malosá Sampaio; Fabiana Sobral Peixoto-Souza; Fernanda Dultra Dias; Evelim Leal Freitas Dantas Gomes; Flavia Regina Greiffo; Ana Paula Ligeiro de Oliveira; Roberto Stirbulov; Rodolfo Paula Vieira; Dirceu Costa Journal: Int J Chron Obstruct Pulmon Dis Date: 2015-03-23
Authors: S P Jürgensen; R Trimer; L Di Thommazo-Luporini; V Z Dourado; J C Bonjorno-Junior; C R Oliveira; R Arena; A Borghi-Silva Journal: Braz J Med Biol Res Date: 2016-07-11 Impact factor: 2.590
Authors: Henrique Silveira Costa; Rafael Leite Alves; Stela Alves da Silva; Maria Clara Noman Alencar; Maria do Carmo Pereira Nunes; Márcia Maria Oliveria Lima; Manoel Otávio da Costa Rocha Journal: Int J Prev Med Date: 2014-02