Criterion validity for three of these measures was established in NSCLC but not the reliability or responsiveness .
Background The measurement properties of instruments used to assess functional capacity , physical activity and muscle strength in participants with non-small cell lung cancer ( NSCLC ) have not been systematic ally review ed .
Method Objectives : To identify outcome measures used to assess these outcomes in participants with NSCLC ; and to evaluate , synthesis e and compare the measurement properties of the outcome measures identified .
Value of the average basal daily walked distance measured using a pedometer to predict maximum oxygen consumption per minute in patients undergoing lung resection.
OBJECTIVES Maximum oxygen consumption per min ( VO(₂max ) ) is currently considered the most accurate test for the preoperative risk assessment in patients scheduled for pulmonary resection . Due to its high-technology requirements and cost , VO(₂max ) is performed less frequently than is desired . The objective of this investigation is to determine if the measurement of the basal daily ambulatory activity of the patients , with a pedometer , can be used to predict VO(₂max ) values . METHODS This is a prospect i ve study on 38 patients referred for scheduled lobectomy or pneumonectomy .  Daily basal preoperative activity  of the patients was measured 3 weeks before surgery by means of an OMROM HJ-72OIT-E2 pedometer . Before surgery , VO(₂max ) ( dependent variable ) was calculated using a Master Screen CPX module of Jaeger-Vyasis-Healthcare . The following independent variables were studied : age , sex , preoperative forced expiratory volume in 1s percentage ( FEV1 % ) and carbon monoxide diffusing capacity percentage ( DLCO% ) , mean number of steps per day ( aerobic and non-aerobic ) , mean daily time of aerobic activity ( in min ) and mean daily walked distance ( in km ) . Two linear regression models with bootstrap robust estimation of the st and ard error of the coefficients were adjusted and the estimated values of VO(₂max ) were kept as a new variable for comparison . To avoid collinearity problems , only one of the pedometer records entered the regression model . RESULTS Data of the series ( mean ± SD ) : age 62.8 ± 10.14 years ; FEV1 % 90.1 ± 21.8 ; DLCO% 82.8 ± 20.1 . After collinearity analysis , mean daily walked distance was chosen as the most representative variable . In the first regression model , ' Distance ' ( p = 0.000 ) was highly correlated to the dependent variable ( adjusted R² : 0.812 ) . The second model improved the predictive value of the first one adding DLCO% to the model . In this model , DLCO% ( p = 0.000 ) and ' Distance ' ( p = 0.002 ) were correlated to the dependent variable . The adjusted R² of the second lineal model was 0.935 . CONCLUSION These preliminary data show that a combination of the measured daily ambulatory activity using a pedometer , especially the mean daily walked distance in km , and the DLCO% of the patient could predict the VO(₂max ) value . Larger data series are needed for conclusive results
Criterion validity for three of these measures was established in NSCLC but not the reliability or responsiveness .
Background The measurement properties of instruments used to assess functional capacity , physical activity and muscle strength in participants with non-small cell lung cancer ( NSCLC ) have not been systematic ally review ed .
Method Objectives : To identify outcome measures used to assess these outcomes in participants with NSCLC ; and to evaluate , synthesis e and compare the measurement properties of the outcome measures identified .