Validation of the Jackson Heart Study Physical Activity Survey in African Americans
Validation of the Jackson Heart Study Physical Activity Survey in African Americans
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DOI：
10.1123/jpah.6.s1.s124
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发表时间：
2009-09-01
影响因子：
3.1
通讯作者：
Taylor, Herman A., Jr.
中科院分区：
文献类型：
--
作者：
Smitherman, Todd A.;Dubbert, Patricia M.;Taylor, Herman A., Jr.
背景：缺乏身体活动一直与心血管疾病有关，但很少有工具被验证用于评估非裔美国人的身体活动，这是一个特别容易患心脏病的群体。目前的研究旨在建立杰克逊心脏研究（JHS）中使用的非裔美国人活动调查的心理测量特性，JHS身体活动队列调查（JPAC）。方法：采用40名非裔美国人作为方便样本，对2周内的重测信度进行评估。对来自JHS的2个样本（N = 404和294）的加速度计和计步器数据进行收敛效度评估。结果：重测信度极好，JPAC总分与指标得分班级内相关= 0.99。较高的JPAC总分与较高的原始加速度计和计步器计数显著相关。JPAC总分与加速度计（rho = 0.24）和计步器计数（rho = 0.32）之间的Spearman相关性与这些结果一致。多数子量表与客观测量结果显著相关。JPAC总分与客观测量的活动密切相关。结论：本研究为JPAC作为评估非裔美国人各领域体育活动的工具的可靠性和有效性提供了支持。
Background: Physical inactivity has been consistently linked to cardiovascular disease, yet few instruments have been validated for assessment of physical activity in African Americans, a group particularly vulnerable to heart disease. The current study aimed to establish the psychometric properties of the activity survey used in the Jackson Heart Study (JHS) among African Americans, the JHS Physical Activity Cohort survey (JPAC). Methods: Test-retest reliability over 2 weeks was assessed using a convenience sample of 40 African Americans. Convergent validity with accelerometer and pedometer data were assessed in 2 samples from the JHS (N = 404 and 294, respectively). Results: Test-retest reliability was excellent, with intraclass correlations = .99 for the JPAC total and index scores. Higher JPAC total scores were significantly associated with higher raw accelerometer and pedometer counts. Spearman correlations between JPAC total scores and accelerometer (rho = .24) and pedometer counts (rho = .32) were consistent with these results. Most subscales were significantly correlated with the objective measures. The JPAC total score was most strongly associated with objectively-measured activity. Conclusion: This study provides support for the reliability and validity of the JPAC as a tool for assessing physical activity among African Americans across a variety of domains.