Method ological factors affecting 6MWD include track length , encouragement , supplemental oxygen and walking aids .
Supplemental oxygen also affects ISWT and ESWT performance .
Responsiveness was moderate to high for all tests , with greater responsiveness to interventions that included exercise training .
The findings of this review demonstrate that the 6MWT , ISWT and ESWT are robust tests of functional exercise capacity in adults with chronic respiratory disease
This systematic review examined the measurement properties of the 6-min walk test ( 6MWT ) , incremental shuttle walk test ( ISWT ) and endurance shuttle walk test ( ESWT ) in adults with chronic respiratory disease .
The six-minute walk test and body weight-walk distance product in healthy Brazilian subjects.
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 population s. 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 prospect ively 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
Method ological factors affecting 6MWD include track length , encouragement , supplemental oxygen and walking aids .
Supplemental oxygen also affects ISWT and ESWT performance .
Responsiveness was moderate to high for all tests , with greater responsiveness to interventions that included exercise training .
The findings of this review demonstrate that the 6MWT , ISWT and ESWT are robust tests of functional exercise capacity in adults with chronic respiratory disease
This systematic review examined the measurement properties of the 6-min walk test ( 6MWT ) , incremental shuttle walk test ( ISWT ) and endurance shuttle walk test ( ESWT ) in adults with chronic respiratory disease .