First reported cases of hantavirus pulmonary syndrome in Canada.
First reported cases of hantavirus pulmonary syndrome in Canada.
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加拿大首次报告汉坦病毒肺综合征病例。
DOI：
10.1037/hea0000849
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
A. Bell
中科院分区：
文献类型：
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作者：
C. Stephen;M. Johnson;A. Bell
目的以工作场所体力活动为目标，进行为期6个月的复杂干预，采用聚类随机对照试验研究体力活动忠诚度（PAL）方案。财政激励措施被纳入以证据为基础的行为改变计划，包括自我调节技巧。本文考察了短期（< 6个月）和长期（≥6个月）对身体活动的中介作用。方法成人853例（干预组457例，对照组396例）。在基线、6个月和12个月时使用计步器客观评估身体活动。假设的短期中介（如自我效能、意图）在基线和第4周进行评估。在基线和6个月时评估假设的长期中介因素（如习惯、内在动机）。中介模型采用结构方程建模系数积法。结果与对照组相比，干预组6个月来每天步数显著减少(b= - 336, p=。02)，通过6个月的综合调节（ab= 94.7, 95% CI[18.7, 204.4]）、内在动机（ab= 59.0, 95% CI[3.09, 154.5]）和习惯（ab= 198.7, 95% CI[84.3, 369.9]）的积极间接效应部分缓解了这种影响。12个月计步器步数/天组间无差异，但通过6个月综合调节（ab= 128.0, 95% CI[27.3, 313.2]）、计划（ab= 115.0, 95% CI[3.71, 285.5]）和习惯（ab= 153.3, 95% CI[39.3, 333.1]）产生了积极的间接影响。结论：大多数被检查的中介不显著，中介分析不能解释干预组与对照组相比体力活动的减少。结果表明，与自我决定理论假设相反，如果在复杂干预中嵌入财务激励，则内在动机不一定会受到不利影响。（PsycINFO数据库记录(c) 2020 APA，版权所有）
ObjectiveThe physical activity loyalty (PAL) scheme was a cluster randomized controlled trial of a 6-month complex intervention targeting workplace physical activity. Financial incentives were incorporated in an evidence-based behavior change program, including self-regulation techniques. This article examines short-term (< 6 months) and long-term (≥ 6 months) mediation effects on physical activity.MethodParticipants included 853 adults (457 intervention, 396 control). Physical activity was objectively assessed using pedometers at baseline and at 6 and 12 months. Hypothesized short-term mediators (eg, self-efficacy, intentions) were assessed at baseline and 4 weeks. Hypothesized long-term mediators (eg, habit, intrinsic motivation) were assessed at baseline and 6 months. Mediation models employed the structural equation modeling product-of-coefficients approach.ResultsIntervention participants experienced significant decreases in 6-month pedometer steps/day versus controls (b=− 336, p=. 02), which were partially mitigated by positive indirect effects through 6-month integrated regulation (ab= 94.7, 95% CI [18.7, 204.4]), intrinsic motivation (ab= 59.0, 95% CI [3.09, 154.5]), and habit (ab= 198.7, 95% CI [84.3, 369.9]). There were no between-groups differences in 12-month pedometer steps/day but positive indirect effects through 6-month integrated regulation (ab= 128.0, 95% CI [27.3, 313.2]), planning (ab= 115.0, 95% CI [3.71, 285.5]), and habit (ab= 153.3, 95% CI [39.3, 333.1]).ConclusionsMost examined mediators were nonsignificant, and mediation analyses did not explain decreases in physical activity for interventions versus controls. Results show that, contrary to self-determination theory hypotheses, intrinsic motivation is not necessarily adversely impacted if financial incentives are embedded in a complex intervention.(PsycINFO Database Record (c) 2020 APA, all rights reserved)