Postgraduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
Nutrition Department, Health Science Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
PLoS One. 2020 Apr 17;15(4):e0231216. doi: 10.1371/journal.pone.0231216. eCollection 2020.
The Brazilian Workers Food Program (WFP) is a public policy program of nutritional assistance to workers, with the main objective of improving nutritional conditions, which was implemented 40 years ago and serves over 21.4 million workers.
To compare the long-term change in anthropometric indicators of the nutritional status and dietary intake between workers of manufacturing industries adherent to and non-adherent to the WFP.
A prospective cohort study, based on a combined stratified and multistage probability sampling, was carried out, with two waves with a 4-year interval. The change in body mass index (BMI), waist circumference (WC) and dietary intake at lunch by the 24-hour recall method were compared between groups with analysis of covariance.
A total of 273 workers in 16 industries from an initial cohort of 1069 workers in 26 industries of the State of Rio Grande do Norte in Brazil were evaluated in the two waves. The mean age was 37±10 years and 53.1% were male, with no differences between groups in age and sex distribution. BMI increased in both groups (0.44 kg/m2 in non-WFP, p = 0.003, and 0.56 kg/m2 in WFP, p = 0.0006) and WC increased in the WFP group (1.50 cm, p = 0.0006). BMI change over time did not show statistical differences between groups (p = 0.54) but WC had a greater increase in the WFP group (difference 1.37 cm, p = 0.047). There were no differences between groups in the change over time of the dietary intake.
BMI and WC increased over time in manufacturing workers of industries both adherent and non-adherent to the WFP, but with a greater increase of WC in the WFP group. In order to achieve the objectives of the WFP, there will be a need for periodic evaluation and monitoring of nutritional indicators in these workers and implementation of monitoring and enforcement actions of the WFP.
巴西工人食品计划（WFP）是一项针对工人的营养援助公共政策计划，主要目标是改善营养状况，该计划于 40 年前实施，服务超过 2140 万名工人。
比较坚持和不坚持 WFP 的制造业工人在营养状况和膳食摄入的长期变化。
这是一项基于分层和多阶段概率抽样的前瞻性队列研究，共进行了两次，两次之间间隔 4 年。通过 24 小时回忆法比较了两组工人的体重指数（BMI）、腰围（WC）和午餐膳食摄入的变化，并进行协方差分析。
共评估了巴西里约热内卢州的 16 个行业中最初的 1069 名工人中的 273 名工人，他们参加了两次研究。两次研究中，平均年龄为 37±10 岁，53.1%为男性，两组在年龄和性别分布上没有差异。两组的 BMI 均有所增加（非 WFP 组增加 0.44kg/m2，p=0.003，WFP 组增加 0.56kg/m2，p=0.0006），WC 也在 WFP 组增加（增加 1.50cm，p=0.0006）。两组间 BMI 随时间的变化无统计学差异（p=0.54），但 WFP 组的 WC 增加更大（差异 1.37cm，p=0.047）。两组间随时间变化的膳食摄入无差异。
坚持和不坚持 WFP 的制造业工人的 BMI 和 WC 随时间增加，但 WFP 组的 WC 增加更大。为了实现 WFP 的目标，需要定期评估和监测这些工人的营养指标，并实施 WFP 的监测和执法行动。
