Sartorelli Daniela Saes, Franco Laércio Joel, Cardoso Marly Augusto
Department of Social Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, SP 14049-900, Brazil.
Nutr Res. 2008 Apr;28(4):233-8. doi: 10.1016/j.nutres.2008.02.004.
To determine whether changes in dietary intakes predict weight loss, we studied 80 overweight adults who attended a nutritional counseling program during 6 months of follow-up at a primary health care center in Brazil. Habitual diet was assessed using a validated food frequency questionnaire at baseline and after 6 months. The mean age (+/-SD) of the participants was 46.5 +/- 9.5 years, and their mean body mass index was 29 +/- 3 kg/m(2) at baseline. After 6 months, the differences in body weight and fruit/vegetable intake were -1.4 +/- 3 kg and +/-109 +/- 320 g daily, respectively. Using multiple linear regression models adjusted for age, sex, changes in walking time, and total energy intake, the increased intake of dietary fiber from fruits/vegetables was associated with a greater weight loss (beta1 [95% confidence interval (CI)] = -0.180 [-0.269, -0.091]) after 6 months of follow-up. Similar results were observed for increased intake of vegetables (beta1 [95% CI] = -0.00497 [-0.008, -0.002]) and fruits (beta1 [95% CI] = -0.00290 [-0.005, -0.001]) as predictors of weight loss. The increase of 100 g/d of vegetables and fruits represented a body weight loss of 500 and 300 g after 6 months, respectively (P < .05). Our findings support the relevance of increased intakes of fruits and vegetables that may help avoid weight gain in overweight adults.
为了确定饮食摄入量的变化是否能预测体重减轻，我们对80名超重成年人进行了研究，这些人在巴西一家初级卫生保健中心接受了为期6个月的营养咨询项目随访。在基线期和6个月后，使用经过验证的食物频率问卷评估习惯性饮食。参与者的平均年龄（±标准差）为46.5±9.5岁，基线时平均体重指数为29±3kg/m²。6个月后，体重和水果/蔬菜摄入量的差异分别为-1.4±3kg和±109±320g/天。使用针对年龄、性别、步行时间变化和总能量摄入进行调整的多元线性回归模型，随访6个月后，水果/蔬菜中膳食纤维摄入量的增加与更大程度的体重减轻相关（β1[95%置信区间（CI）]=-0.180[-0.269，-0.091]）。对于蔬菜（β1[95%CI]=-0.00497[-0.008，-0.002]）和水果（β1[95%CI]=-0.00290[-0.005，-0.001]）摄入量增加作为体重减轻预测因素的情况，也观察到了类似结果。蔬菜和水果摄入量每天增加100g，6个月后分别导致体重减轻500g和300g（P<.05）。我们的研究结果支持增加水果和蔬菜摄入量的相关性，这可能有助于超重成年人避免体重增加。
