使用生态瞬间评估方法探讨 50 岁以上成年人身体活动片段的前因和相关性：一项试点研究。
Using ecological momentary assessment to examine antecedents and correlates of physical activity bouts in adults age 50+ years: a pilot study.
机构信息
Health Promotion Research Branch, Behavioral Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, MD, USA.
出版信息
Ann Behav Med. 2009 Dec;38(3):249-55. doi: 10.1007/s12160-009-9141-4. Epub 2010 Jan 6.
Abstract
BACKGROUND
National recommendations supporting the promotion of multiple short (10+ minute) physical activity bouts each day to increase overall physical activity levels in middle-aged and older adults underscore the need to identify antecedents and correlates of such daily physical activity episodes.
PURPOSE
This pilot study used Ecological Momentary Assessment to examine the time-lagged and concurrent effects of empirically supported social, cognitive, affective, and physiological factors on physical activity among adults age 50+ years.
METHODS
Participants (N = 23) responded to diary prompts on a handheld computer four times per day across a 2-week period. Moderate-to-vigorous physical activity (MVPA), self-efficacy, positive and negative affect, control, demand, fatigue, energy, social interactions, and stressful events were assessed during each sequence.
RESULTS
Multivariate results showed that greater self-efficacy and control predicted greater MVPA at each subsequent assessment throughout the day (p < 0.05). Also, having a positive social interaction was concurrently related to higher levels of MVPA (p = 0.052).
CONCLUSION
Time-varying multidimensional individual processes predict within daily physical activity levels.
摘要
背景
国家建议支持促进每天多次短暂（10 分钟以上）的身体活动，以提高中年及以上成年人的整体身体活动水平，这凸显了识别此类日常身体活动的前因和相关因素的必要性。
目的
本试点研究使用生态瞬间评估法，研究在 50 岁及以上成年人中，经验证的社会、认知、情感和生理因素对身体活动的时间滞后和并发影响。
方法
参与者（N=23）在两周的时间内，每天通过手持电脑四次回应日记提示。在每个序列中评估中度至剧烈的身体活动（MVPA）、自我效能感、积极和消极情绪、控制感、需求、疲劳、能量、社交互动和压力事件。
结果
多变量结果表明，在一天中的每个后续评估中，更高的自我效能感和控制感预示着更高的 MVPA（p<0.05）。此外，积极的社交互动与更高水平的 MVPA 呈并发关系（p=0.052）。
结论
时变多维个体过程预测日常身体活动水平。
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