Anton S D, Martin C K, Redman L, York-Crowe E, Heilbronn L K, Han H, Williamson D A, Ravussin E
Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida, USA.
Eat Weight Disord. 2008 Mar;13(1):30-7. doi: 10.1007/BF03327782.
This study tested whether baseline behavioral and psychological variables predict weight and fat loss among overweight, non-obese individuals participating in a six-month calorie restriction trial. Participants (N=48) were randomly assigned to four groups, three of which included a calorie restriction program and one of which served as a healthy diet weight maintenance control. For the purposes of this study, data were analyzed only for participants assigned to the three calorie restriction groups (n=36). Ten psychological and behavioral measures were investigated through principal components factor analysis to examine whether these measures were assessing similar or distinct psychological and behavioral constructs. Based on the obtained six-factor solution, one measure from each domain was selected for inclusion in hierarchical regression analyses, which was used to test the relative importance of psychosocial and behavioral variables in predicting percent weight and fat loss over six months. After controlling for demographic and treatment variables, the behavioral and psychological measures of negative mood states, poor psychosocial functioning, and somatic symptoms were associated with less weight loss (R2=0.68, p<0.001) and fat loss (R2=0.65, p<0.001) over six months. Among overweight individuals, poor psychological adjustment, somatic symptoms, and negative mood states appear to form a psychosocial profile that is predictive of less weight and fat loss in calorie restriction programs.
本研究测试了基线行为和心理变量是否能预测参与为期六个月热量限制试验的超重、非肥胖个体的体重和脂肪减少情况。参与者（N = 48）被随机分为四组，其中三组包括热量限制计划，一组作为健康饮食体重维持对照组。就本研究而言，仅对分配到三个热量限制组的参与者（n = 36）的数据进行了分析。通过主成分因子分析研究了十种心理和行为测量指标，以检验这些指标是在评估相似还是不同的心理和行为结构。基于得到的六因素解决方案，从每个领域选择一项测量指标纳入层次回归分析，该分析用于测试心理社会和行为变量在预测六个月内体重和脂肪减少百分比方面的相对重要性。在控制了人口统计学和治疗变量后，负面情绪状态、心理社会功能不良和躯体症状的行为和心理测量指标与六个月内较少的体重减轻（R2 = 0.68，p < 0.001）和脂肪减少（R2 = 0.65，p < 0.001）相关。在超重个体中，心理调适不良、躯体症状和负面情绪状态似乎形成了一种心理社会特征，可预测热量限制计划中体重和脂肪减少较少。
