The association between self-reported physical activity and objective measures of physical activity in participants with newly diagnosed bipolar disorder, unaffected relatives, and healthy individuals
Publication: Nordic Journal of Psychiatry
14 October 2020
The subjective reporting of physical activity generally has low accuracy for quantifying energy expenditure, possibly due to problems of recall which may differ by mental health status.
This study compared the validity of self-reported physical activity (using International Physical Activity Questionnaire, IPAQ) in patients with bipolar disorder, unaffected relatives and healthy controls using combined heart rate and movement sensing as the objective criterion measure.
Correlations were positive but weak between IPAQ and sensor-based estimates for all groups combined, indicating IPAQ may be used to approximately rank individuals by activity level but there was no clear evidence that validity was any different in the bipolar patients as validity in the two comparison groups was higher (unaffected relatives) and lower (healthy controls).