Assessing SB as a sum of behaviours and using a previous day recall were the most promising features of existing tools .
Accuracy was poor for all existing tools , with underestimation and overestimation of SB .
There was a lack of evidence about sensitivity to change .
OBJECTIVE Sedentary behaviour ( SB ) has distinct deleterious health outcomes , yet there is no consensus on best practice for measurement .
This study aim ed to identify the optimal self-report tool for population surveillance of SB , using a systematic framework .
The physical activity scale for the elderly (PASE): evidence for validity.
We assessed the validity of the Physical Activity Scale for the Elderly ( PASE ) in a sample of sedentary adults ( 56 men , 134 women , mean age + /- [ SD ] 66.5+/-5.3 years ) who volunteered to participate in a r and omized controlled trial on the effect of aerobic conditioning on psychological function . Construct validity was established by correlating PASE scores with physiologic and performance characteristics : peak oxygen uptake , resting heart rate and blood pressure , percent body fat , and balance . The mean PASE scores were higher in men than in women ( men = 145.8+/-78.0 ; women = 123.9+/-66.3 , P<0.05 ) , and in those age 55 - 64 years compared with those age 65 years and over ( 55 - 64 = 144.2+/-75.8 ; 65 and over = 118.9+/-63.9 , P<0.05 ) .  PASE scores were also significantly higher in those who did not report a chronic health condition ( cardiovascular disease , hypertension , cancer , or recent surgery ) .  PASE scores were significantly associated ( P<0.05 ) with peak oxygen uptake ( r = 0.20 ) , systolic blood pressure ( r = -0.18 ) and balance score ( r = 0.20 ) . No significant associations of  PASE score and diastolic blood pressure , resting heart rate , or percent body fat were noted . These results provide additional evidence for the validity of the PASE as a measure of physical activity suitable for use in epidemiology studies on the association of physical activity , health , and physical function in older individuals
Assessing SB as a sum of behaviours and using a previous day recall were the most promising features of existing tools .
Accuracy was poor for all existing tools , with underestimation and overestimation of SB .
There was a lack of evidence about sensitivity to change .
OBJECTIVE Sedentary behaviour ( SB ) has distinct deleterious health outcomes , yet there is no consensus on best practice for measurement .
This study aim ed to identify the optimal self-report tool for population surveillance of SB , using a systematic framework .