Differential accuracy of physical activity self-report by body mass index.

Journal Article (Journal Article)


To examine whether agreement between self-reported and accelerometer-measured physical activity varies by BMI category in a low-income black sample.


Participants completed a questionnaire and wore an accelerometer for 4-6 days. Using one- and 10-minute bouts, accelerometers measured light, moderate, and vigorous physical activity time.


Correlations varied by obesity (nonobese: one-minute r=0.41; 10-minute r=0.47; obese: one-minute r=0.21; 10-minute r=0 .14). Agreement was highest among nonobese persons (one-minute kappa = 0.48, 10-minute kappa = 0.023; obese: one-minute kappa = -0.024, 10- minute kappa = -0.020).


We found compromised questionnaire performance among obese participants.

Full Text

Duke Authors

Cited Authors

  • Warner, ET; Wolin, KY; Duncan, DT; Heil, DP; Askew, S; Bennett, GG

Published Date

  • March 2012

Published In

Volume / Issue

  • 36 / 2

Start / End Page

  • 168 - 178

PubMed ID

  • 22370255

Pubmed Central ID

  • PMC3337080

Electronic International Standard Serial Number (EISSN)

  • 1945-7359

International Standard Serial Number (ISSN)

  • 1087-3244

Digital Object Identifier (DOI)

  • 10.5993/ajhb.36.2.3


  • eng