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 .
Distance saturation product predicts health–related quality of life among sarcoidosis patients
Background Sarcoidosis is a chronic disease with different phenotypic manifestations . Health-related quality of life is an important aspect in sarcoidosis , yet difficult to measure . The objective of this study was to identify clinical markers predictive of poor quality of life in sarcoidosis patients that can be followed over time and targeted for intervention . Methods We assessed the quality of life of 162 patients with confirmed sarcoidosis in a prospect i ve , cross-sectional study using the Sarcoidosis Health Question naire ( SHQ ) and Short Form-36 Health Survey ( SF-36 ) . We evaluated the validity of these question naires and sought to identify variables that would best explain the performance scores of the patients . Results On multivariate regression analyses , the very best composite model to predict total scores from both surveys was a model containing the distance-saturation product and Borg Dyspnea Scale score at the end of a 6-min walk test . This model could better predict SF-36 scores ( R2 = 0.33 ) than SHQ scores ( R2 = 0.24 ) . Substitution of distanced walked in 6 min for the distance-saturation product in this model result ed in a lesser ability to predict both scores ( R2 = 0.26 for SF-36 ; R2 = 0.22 for SHQ ) . Conclusions Both the SHQ and SF-36 surveys are valuable tools in the assessment of health-related quality of life  in sarcoidosis patients . The best model to predict quality of life among these patients , as determined by regression analyses , included the distance-saturation product and Borg score after the 6-min walk test . Both variables represent easily obtainable clinical parameters that can be followed over time and targeted for intervention
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 .