title: Step-based translation of physical activity guidelines in the Lower Mississippi Delta.
abstract: To determine how many steps·day(-1) equate to current moderate-to-vigorous physical activity (MVPA) guidelines in a population from the Lower Mississippi Delta (LMD) of the United States, 58 overweight adults wore an Actigraph accelerometer (GT3X) for up to 2 weeks. Min·day(-1) in MVPA was a good predictor of steps·day(-1) (r(2) = 0.62; p < 0.001; linear regression), such that 30 min of daily MVPA equated to 9154 steps·day(-1) (mixed-model approach). Using receiver operating characteristic analysis, sensitivity and specificity were optimized at 8357 steps·day(-1). Results indicate that overweight residents of the LMD should be accumulating at least 8300-9100 steps·day(-1) to meet the recommendation of 30 min·day(-1) MVPA.
authors.affiliation: Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA.
authors.forename: Deirdre M
authors.initials: DM
authors.lastname: Harrington
authors.forename: Catrine
authors.initials: C
authors.lastname: Tudor-Locke
authors.forename: Catherine M
authors.initials: CM
authors.lastname: Champagne
authors.forename: Stephanie T
authors.initials: ST
authors.lastname: Broyles
authors.forename: David W
authors.initials: DW
authors.lastname: Harsha
authors.forename: Betty M
authors.initials: BM
authors.lastname: Kennedy
authors.forename: William D
authors.initials: WD
authors.lastname: Johnson
authors.forename: Ray
authors.initials: R
authors.lastname: Allen
authors.forename: Peter T
authors.initials: PT
authors.lastname: Katzmarzyk
mesh_terms: D003430:Cross-Sectional Studies; D005260:Female; D019983:Guideline Adherence / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008922:Mississippi; D018670:Monitoring, Ambulatory / Q000379:methods* / Q000706:statistics & numerical data*; D009043:Motor Activity / Q000502:physiology*; D050177:Overweight / Q000628:therapy*; D012372:ROC Curve; D012680:Sensitivity and Specificity; D013997:Time Factors; D016138:Walking / Q000502:physiology* / Q000706:statistics & numerical data*