Effect of an Individualized Dietary Intervention on the Body Composition and Vitamin A Status of Breastfeeding Women
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- Total Body weight
研究概览
简要总结
Breast milk is the best food during the first 6mo of life because it offers multiple benefits for the mother-infant pair. An inadequate maternal diet during pregnancy can lead to excess weight gain, leading to negative health consequences for the dyad. In Mexico, an excess of body weight coexists with micronutrient deficiencies (double burden of malnutrition). Low vitamin A concentration has been observed in northwest Mexico, which can affect the human milk composition and increase the risk of VAD in breastfed babies. An individualized dietary intervention in the lactating woman will reduce body weight and improve vitamin A status. The objective is to assess the effect of an individualized dietary intervention during 3 months postpartum on body composition and vitamin A status of lactating women.
详细描述
This protocol was approved by the Bioethics Committee of the Department of Medicine and Health Sciences of Universidad de Sonora. A randomized controlled trial will be carried out and participant women will be assigned by simple randomization 1:1 to either the intervention or control group, upon signing an informed consent. At baseline (2wk postpartum), anthropometric (weight, height, mid upper-arm circumference and triceps skinfold thickness) and body composition (DXA) measurements as well as the assessment of vitamin A status (serum and breastmilk retinol and the modified relative dose response) will be performed. The control group will receive only recommendations for a healthy diet in accordance with international standards and will be followed up every month to promote adherence and to assess their nutritional status. On the other hand, the intervention group will receive an individualized macronutrient meal equivalent menu, with nutritional consultations every two weeks. The dietary plan will include 1-1.5 g/kg body weight protein, 30% total fat (preferably mono and polyunsaturated fatty acids), and vitamin A sources (1300 RAE). After 3 months of intervention are completed, baseline measurements will be repeated. Statistical analysis will include descriptive stats and comparisons between groups (t-tests), significance will be defined as P < 0.05.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Predominant breastfeeding
- •Signed Informed Consent
排除标准
- •Multiparity
- •Alcohol, drugs, tobacco intake
- •Use of dietary supplements
- •Active infection (C reactive protein > 6mg/L)
- •External nutritional counseling
- •Pregnancy during the study period
- •Liver disease
研究组 & 干预措施
Intervention-Nutrition guidelines
Subjects will receive an individualized dietary plan according to their nutritional status, socioeconomic and cultural preferences. Protein intake 1-1.5g/kg body weight; 30% fat (mono and polyunsaturated fatty acids), vitamin A sources (1300 RAE). Each subject will have 7 interchangeable options for every meal time, all equivalent in macronutrient content, and every two weeks a new menu will be provided by a nutritionist.
干预措施: Intervention-Nutrition guidelines (Behavioral)
Nutrition Guidelines
Participants will receive general nutritional recommendations according to international standards
干预措施: Nutrition guidelines (Behavioral)
结局指标
主要结局
Total Body weight
时间窗: Baseline and 3 months after enrollment
Difference in change (between baseline and final body weight within groups) between the intervention and control group, respectively
Vitamin A liver stores
时间窗: Baseline and 3 months after enrollment
Stores are calculated as the DR/R ratio. The outcome will be calculated as the difference in change (between baseline and final VA stores within groups) between the intervention and control group, respectively
次要结局
- Body fat mass(Baseline and 3 months after enrollment)
- Retinol(Baseline and 3 months after enrollment)
研究者
Verónica López Teros, PhD
Research professor
Universidad de Sonora