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 body weight-walking distance product as related to lung function, anaerobic threshold and peak VO2 in COPD patients.
The product of walking distance and body weight ( D x W ) mimics the work of walking . We hypothesized the superiority of D x W to walking distance ( D ) alone in any correlation with lung function , anaerobic threshold ( AT ) and maximal oxygen uptake ( VO2max ) . We further hypothesized that the D x W product for a 6-min walk test ( 6 MWT ) would correlate with the AT and VO2max because all three are markers of exercise ability . Thirty-three male chronic obstructive pulmonary disease ( COPD ) patients with mean forced expiratory volume in 1 sec ( FEV1 ) of 1.2+/-0.4 l ( range 0.58 - 1.86 l ) were enrolled . Six patients were excluded due to inability to achieve a maximal test .  Lung function and self-assessed every-day activities using a oxygen-cost diagram were evaluated before entry of the study . A maximal effort ramp-pattern cardiopulmonary exercise test ( CPET ) and a 6 MWT were conducted in r and om order . Borg score , heart rate , and O2 saturation with pulse oximetry ( SpO2 ) were measured during both exercise tests . VO2 AT and minute ventilation were also measured during the CPET . Correlations were sought between the distance covered in the 6 MWT , and the D x W product with AT , VO2max and other variables . The average D and D x W were 456 m and 27.5 kg km(-1 ) , respectively . D x W was superior to D alone when correlated with the VO2max and AT determined from the CPET , while modestly correlated with the change ( delta ) in Borg score and delta SpO2 in the 6 MWT and self-assessed every-day activities . Distance x weight product was correlated with the AT and VO2max . In addition , D x W was better correlated with diffusing capacity for carbon monoxide and vital capacity than D alone . We conclude that D x W mimics the work of walking better than D and is suggested as a parameter for evaluation of patients ' fitness if gas exchange measurements are not available
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 .