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两项行为维持试验中的自我报告活动及加速度测量法

Self-reported activity and accelerometry in 2 behavior-maintenance trials.

作者信息

Senso Meghan M, Anderson Christopher P, Crain A Lauren, Sherwood Nancy E, Martinson Brian C

机构信息

HealthPartners Institute for Education and Research, Minneapolis, MN, USA

HealthPartners Institute for Education and Research, Minneapolis, MN, USA.

出版信息

Am J Health Behav. 2014 Mar;38(2):254-64. doi: 10.5993/AJHB.38.2.11.

DOI:10.5993/AJHB.38.2.11
PMID:24629554
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4104794/
Abstract

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.

摘要

目的

在活动维持（明尼苏达保持活跃；KAM）和体重减轻维持（保持体重；KIO）试验中，比较加速度计测量的中等强度身体活动（MVPA - A）和自我报告的活动（MVPA - SR）。

方法

线性回归估计研究、治疗或时间对MVPA - A和MVPA - SR关联的调节作用。

结果

各研究间MVPA - A相似（KAM为119分钟，KIO为112分钟，p = 0.555），而MVPA - SR差异显著（KAM为350分钟，KIO为87分钟，p < 0.0001）。仅研究对MVPA - A和MVPA - SR之间的相关性有调节作用。相对于KAM，MVPA - SR在KIO中对MVPA - A的预测更好（p = 0.023）。

结论

结果表明，在以活动为主要结局的干预研究中，自我展示偏差可能会影响自我报告的有效性。研究人员应选择自我报告来评估客观测量难以捕捉的活动维度。

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