For convergent validity ( i.e. , the relationship between PAQs and other measures ) , similar overall associations were found between Past-week PAQs and Usual-week PAQs .
However , PAQs were more strongly associated with direct measures of physical activity ( e.g. , accelerometer ) than indirect measures of physical activity ( i.e. , physical fitness ) , irrespective of recall methods .
Only a few interview-administered PAQs exhibited positive ratings for a single psychometric property , although the other properties were either rated as poor or question able , demonstrating the limitations of current PAQs .
Self-administered questionnaire compared with interview to assess past-year physical activity.
PURPOSE The Modifiable Activity Question naire ( MAQ ) is a physical activity question naire shown to be both valid and reliable and was initially design ed to be interviewer-administered . After translation and adaptation into French , the objective of the study was to compare past-year physical activity data obtained by self-administration of this question naire and by interviewer-administration . METHODS 84 subjects ( 22 men , 62 women , age 36 - 63 yr ) enrolled in an ongoing prospect i ve study in France ( the SUpplementation en VItamines et Minéraux AntioXydants or SU.VI.MAX study ) completed both versions of the question naire in a r and omized order with a mean ( SD ) delay of 7.9 ( 5.8 ) d between the two modes . Past-year leisure and occupational physical activity were expressed as both h x wk(-1 ) and MET-h x wk(-1 ) of activity , and television watching was expressed as h x d(-1 ) . Analysis of variance on ranks was used to compare activity variables obtained by self-administration and interview . Agreement was assessed by nonparametric intraclass correlation coefficients . RESULTS A significant effect of the mode of administration was found only for past-year leisure physical activity with lower values reported in self-administered conditions compared with interview . However , a high level of concordance between the two modes of administration was observed for all variables as shown by the intraclass correlation coefficients : 0.90 for leisure physical activity ( h x wk(-1 ) ) , 0.82 for occupational activity ( h x wk(-1 ) ) , 0.83 for total ( leisure and occupational combined ) physical activity ( h x wk(-1 ) ) , and 0.97 for television viewing ( h x d(-1 ) ) . CONCLUSIONS The agreement between the two modes of administration of the question naire suggests that the self-administered version of the MAQ is a valuable tool to assess past-year physical activity and inactivity in self-administered conditions . This instrument could be used in large-scale population studies investigating the relationships between physical activity and health outcomes
For convergent validity ( i.e. , the relationship between PAQs and other measures ) , similar overall associations were found between Past-week PAQs and Usual-week PAQs .
However , PAQs were more strongly associated with direct measures of physical activity ( e.g. , accelerometer ) than indirect measures of physical activity ( i.e. , physical fitness ) , irrespective of recall methods .
Only a few interview-administered PAQs exhibited positive ratings for a single psychometric property , although the other properties were either rated as poor or question able , demonstrating the limitations of current PAQs .