title: Comparability of accelerometer- and IPAQ-derived physical activity and sedentary time in South Asian women: A cross-sectional study.
abstract: There is limited research documenting objectively measured physical activity (PA) and sedentary time (ST) in South Asian (SA) women, with no published evidence of the validity of self-report methods for assessment of PA/ST in SA. The purpose of this study was to compare accelerometer- and International Physical Activity Questionnaire (IPAQ)-derived PA/ST among SA women in the United Kingdom (UK) via a mixed-methods approach. One hundred and forty SA women wore an accelerometer for seven consecutive days; a sub-sample (n = 50) completed the IPAQ-Short Form (IPAQ-SF) and a brief structured interview. Accelerometer-derived metabolic equivalent (MET) minutes per week (min/wk) moderate-to-vigorous physical activity (MVPA) (mean ± SD) for the full sample was 793.94 (±519.44) and mean accelerometer-derived ST wk was 530.20 (±81.76). IPAQ-SF-derived MVPA (MET min/wk) was 636.80 (±2113.56) and mean ST wk was 315.31 (±266.98). Pearson correlations were not significant between accelerometer- and IPAQ-SF-assessed MVPA (r = -.119, p = .579) and ST (r = -.140, p = .229). Major themes synthesised from interviews included inability to recall sitting time and limited general knowledge of real-life examples of MVPA. These results suggest that the IPAQ-SF may not accurately measure PA/ST in the UK SA women. These findings are supported by qualitative evidence indicating several issues with interpretation and recall of PA/ST as assessed via this questionnaire.
authors.affiliation: a School of Health, Sport and Biosciences , University of East London , London , UK.
authors.forename: Whitney Babakus
authors.initials: WB
authors.lastname: Curry
authors.affiliation: b School of Sport, Exercise & Rehabilitation Sciences , University of Birmingham , Birmingham , UK.
authors.forename: Janice L
authors.initials: JL
authors.lastname: Thompson
mesh_terms: D061725:Accelerometry; D000293:Adolescent; D000328:Adult; D000368:Aged; D001459:Bangladesh / Q000208:ethnology; D015444:Exercise; D005260:Female; D006801:Humans; D011939:Mental Recall; D008875:Middle Aged; D009043:Motor Activity; D010154:Pakistan / Q000208:ethnology; D057185:Sedentary Behavior; D057566:Self Report; D011795:Surveys and Questionnaires / Q000592:standards*; D006113:United Kingdom; D055815:Young Adult
keywords: Accelerometry; health behaviour; measurement; physical activity assessment