TY - JOUR
T1 - Self-reported activity and accelerometry in 2 behavior-maintenance trials
AU - Senso, Meghan M.
AU - Anderson, Christopher P.
AU - Crain, A. Lauren
AU - Sherwood, Nancy E.
AU - Martinson, Brian C.
PY - 2014/3
Y1 - 2014/3
N2 - Objectives: To compare between accelerometry (MVPA-A) and self-reported activity (MVPA-SR) in activity-maintenance (Keep Active Minnesota; KAM) and weight loss-maintenance (Keep It Off; KIO) trials. Methods: Linear regression estimated moderation of study, treatment, or time on MVPA-A and MVPA- SR associations. Results: MVPA-A was similar between studies (KAM 119 minutes, KIO 112 minutes, p = .555), whereas MVPA-SR differed significantly (KAM 350 minutes, KIO 87 minutes, p < .0001). Only study moderated correlation between MVPA-A and MVPA-SR. MVPA- SR better predicted MVPA-A in KIO relative to KAM (p = .023). Conclusions: Results suggest that self-presentation bias may influence validity of self-report in intervention studies with activity as a primary outcome. Researchers should select self-report to assess activity dimensions that objective measures capture poorly.
AB - Objectives: To compare between accelerometry (MVPA-A) and self-reported activity (MVPA-SR) in activity-maintenance (Keep Active Minnesota; KAM) and weight loss-maintenance (Keep It Off; KIO) trials. Methods: Linear regression estimated moderation of study, treatment, or time on MVPA-A and MVPA- SR associations. Results: MVPA-A was similar between studies (KAM 119 minutes, KIO 112 minutes, p = .555), whereas MVPA-SR differed significantly (KAM 350 minutes, KIO 87 minutes, p < .0001). Only study moderated correlation between MVPA-A and MVPA-SR. MVPA- SR better predicted MVPA-A in KIO relative to KAM (p = .023). Conclusions: Results suggest that self-presentation bias may influence validity of self-report in intervention studies with activity as a primary outcome. Researchers should select self-report to assess activity dimensions that objective measures capture poorly.
KW - Behavioral intervention
KW - Bias
KW - Objective monitoring
UR - https://www.scopus.com/pages/publications/84888865190
UR - https://www.scopus.com/inward/citedby.url?scp=84888865190&partnerID=8YFLogxK
U2 - 10.5993/AJHB.38.2.11
DO - 10.5993/AJHB.38.2.11
M3 - Article
C2 - 24629554
AN - SCOPUS:84888865190
SN - 1087-3244
VL - 38
SP - 254
EP - 264
JO - American journal of health behavior
JF - American journal of health behavior
IS - 2
ER -