Current data confirm that the 6MWT , ISWT and ESWT are valid , reliable and responsive to change with some interventions .
However , results are sensitive to small changes in methodology .
Field walking tests are commonly employed to evaluate exercise capacity , assess prognosis and evaluate treatment response in chronic respiratory diseases .
In recent years , there has been a wealth of new literature pertinent to the conduct of the 6-min walk test ( 6MWT ) , and a growing evidence base describing the incremental and endurance shuttle walk tests ( ISWT and ESWT , respectively ) .
The aim of this document is to describe the st and ard operating procedures for the 6MWT , ISWT and ESWT , which can be consistently employed by clinicians and research ers .
The influence of alternative instruction on 6-min walk test distance.
BACKGROUND The goal of the 6-min walk test ( 6MWT ) is to enable patients to walk " as far as possible " as a measure of their functional ability . The impact of the specific walk instructions on patient 6MWT performance is unknown . METHODS Patients with pulmonary arterial hypertension ( PAH ) , idiopathic pulmonary fibrosis ( IPF ) , and other forms of interstitial lung disease ( ILD ) were recruited to perform four identical 6MWTs with one differing instructional phrase . The st and ard instruction to walk " as far as possible " was substituted in r and om order with " as fast as possible , " " at your normal pace , " or " at a leisurely pace . " RESULTS Twenty-four patients ( 10 with PAH , eight with IPF , six with other ILD ) were enrolled and completed all four 6MWTs . Patients attained the greatest distance with the fast instruction , exceeding the st and ard instruction distance by a mean of 52.7 m ( P < .001 ) . The mean difference between the fast and st and ard walks was 41.5 m in the PAH group , 66.5 m in the IPF group , and 53 m in the other ILD group . CONCLUSIONS Patients do not walk as far as they are able with the st and ard American Thoracic Society instruction for 6MWT . Changing the wording from " far " to " fast " may facilitate a better effort and greater distance during the test . It is possible that this modified 6MWT instruction may result in improved accuracy and reproducibility , thereby enhancing its clinical and research trial usefulness
Current data confirm that the 6MWT , ISWT and ESWT are valid , reliable and responsive to change with some interventions .
However , results are sensitive to small changes in methodology .
Field walking tests are commonly employed to evaluate exercise capacity , assess prognosis and evaluate treatment response in chronic respiratory diseases .
In recent years , there has been a wealth of new literature pertinent to the conduct of the 6-min walk test ( 6MWT ) , and a growing evidence base describing the incremental and endurance shuttle walk tests ( ISWT and ESWT , respectively ) .
The aim of this document is to describe the st and ard operating procedures for the 6MWT , ISWT and ESWT , which can be consistently employed by clinicians and research ers .