RT3与活动日记在心脏病患者中的纵向实地比较。

Longitudinal field comparison of the RT3 and an activity diary with cardiac patients.

作者信息

Hertzog Melody A, Nieveen Janet L, Zimmerman Lani M, Barnason Susan A, Schulz Paula M, Miller Connie L, Rasmussen Doris A

机构信息

University of Nebraska Medical Center, College of Nursing-Lincoln Division, Lincoln 68588-0220, USA.

出版信息

J Nurs Meas. 2007;15(2):105-20. doi: 10.1891/106137407782156363.

DOI:10.1891/106137407782156363

PMID:18020168

Abstract

This study investigated reliability and validity of two methods of measuring patients' physical activity following coronary artery bypass graft (CABG) surgery. Sixty-five patients wore an RT3 accelerometer and recorded activity in a diary at 3 weeks, 6 weeks, and 3 months postsurgery. Generalizability coefficients greater than .80 required approximately 2 to 4 days of data, fewer than reported elsewhere. Energy expenditure estimates correlated .77, .72, and .57 (p < .01), with mean RT3 estimates higher, especially when overall energy expenditure was low. Changes from 3 to 6 weeks correlated only moderately (r = .37-.46) across methods. The methods produce reliable but differing estimates of physical activity in this population. Although no method bias is evident in assessing change over time, correlations support the importance of using multiple methods.

摘要

本研究调查了冠状动脉搭桥术（CABG）后测量患者身体活动的两种方法的可靠性和有效性。65名患者佩戴RT3加速度计，并在术后3周、6周和3个月时通过日记记录活动情况。泛化系数大于0.80需要大约2至4天的数据，比其他地方报道的要少。能量消耗估计值的相关性分别为0.77、0.72和0.57（p < 0.01），RT3平均估计值更高，尤其是在总体能量消耗较低时。从3周到6周的变化在不同方法之间的相关性仅为中等程度（r = 0.37 - 0.46）。这些方法在该人群中对身体活动产生可靠但不同的估计。尽管在评估随时间的变化时没有明显的方法偏差，但相关性支持了使用多种方法的重要性。