Cerin Ester, Mackinnon David P
Children's Nutrition Research Center, Baylor College of Medicine, 1100 Bates Street, Houston, TX 77030, USA.
Public Health Nutr. 2009 Aug;12(8):1182-8. doi: 10.1017/S1368980008003649. Epub 2008 Sep 9.
To critique current practice in, and provide recommendations for, mediating variable analyses (MVA) of nutrition and physical activity behaviour change.
Theory-based behavioural nutrition and physical activity interventions aim at changing mediating variables that are hypothesized to be responsible for changes in the outcome of interest. MVA are useful because they help to identify the most promising theoretical approaches, mediators and intervention components for behaviour change. However, the current literature suggests that MVA are often inappropriately conducted, poorly understood and inadequately presented. Main problems encountered in the published literature are explained and suggestions for overcoming weaknesses of current practice are proposed.
The use of the most appropriate, currently available methods of MVA, and a correct, comprehensive presentation and interpretation of their findings, is of paramount importance for understanding how obesity can be treated and prevented.
对营养与身体活动行为改变的中介变量分析（MVA）的当前实践进行批判，并提供相关建议。
基于理论的行为营养与身体活动干预旨在改变中介变量，这些变量被假定为导致感兴趣的结果发生变化的原因。MVA很有用，因为它们有助于识别行为改变最有前景的理论方法、中介变量和干预组成部分。然而，当前文献表明，MVA往往实施不当、理解不足且呈现不充分。本文解释了已发表文献中遇到的主要问题，并提出了克服当前实践弱点的建议。
使用最合适的、当前可用的MVA方法，并对其结果进行正确、全面的呈现和解释，对于理解如何治疗和预防肥胖至关重要。
