The Effect of a Nutrient Dense Food on the Skin CarotenoidLevels of School Age Children
The Effect of a Nutrient Dense Food on the Skin Carotenoid Levels of School Age Children
Background: In a previous study, children who consumed a high-carotenoid juice over 8 weeks significantly increased skin carotenoid levels as compared to children who consumed a placebo juice. A naturally carotenoid-rich baked product, potentially marketable as a healthy breakfast food alternative, was developed by Utah State University researchers.
Objective: To determine the effect and response of a carotenoid-rich baked product on change in skin carotenoid levels among children.
Design: A six week randomized controlled trial. Participants/setting: Participants were children age 5-18 during March-June, 2015 living in Cache County, UT (n=46). Intervention: Children were randomly assigned to one of two groups: treatment (n=23) with a high carotenoid baked food or control (n=25) who consumed a baked food with no carotenoids. Children were asked to eat the designated portion of the assigned food once a day for six weeks. Skin carotenoid levels were measured every two weeks by a BioPhotonic scanner and reported in Raman intensity counts. Participants were asked to maintain their diet and completed a food frequency questionnaire at Baseline, Week 3, and Week 6. Uneaten portions of the food were returned to clinic, counted, and recorded.
Main outcome measures: Change in skin carotenoid levels as measured in Raman counts over 6 weeks.
Statistical analysis performed: Repeated-measures ANOVA was used to assess the group differences in Raman counts.
研究概览
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Utah
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Logan、Utah、美国、84322-9815
- Utah State University, Center for Human Nutrition Studies
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Skin carotenoid levels 11,000-33,000 Raman intensity counts
- Age 5-18 years
- Willing to attend 7 clinic visits
- Willing to eat designated food each day for 6 weeks
Exclusion Criteria:
- Illness in two weeks before study began
- Chronic disease such as asthma, rheumatoid arthritis, type 1 diabetes
- Skin carotenoid levels <11,000 and >33,000 Raman intensity counts
- Consumption of high carotenoid supplements
- Use of topical self-tanning lotion
学习计划
研究是如何设计的?
设计细节
- 主要用途:其他
- 分配:随机化
- 介入模型:并行分配
- 屏蔽:双倍的
武器和干预
参与者组/臂 |
干预/治疗 |
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有源比较器:High-carotenoid food feeding trial
Twenty-three children were randomly assigned to a treatment with a high carotenoid baked food (4.3mg carotenoids/120g, 360 kcal)
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Children were asked to eat the designated portion of the assigned food once a day for six weeks.
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安慰剂比较:No-carotenoid food feeding trial
Twenty-five children were randomly assigned to consume a baked food with no carotenoids (300 kcals/73g)
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Children were asked to eat the designated portion of the assigned food once a day for six weeks.
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
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Raman resonance spectroscopy
大体时间:6 weeks
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The skin carotenoid levels were determined by calculating the average height of the peak Raman absorbance signal obtained and quantified from excitation of skin carotenoids using a low-intensity blue light-emitting diodes light (λ=473 nm) with green light (510 nm) detection.24
The BioPhotonic Scanner Everest 2TM skin carotenoids were reported as Raman intensity counts.
The higher the count, the higher the concentration of carotenoid molecules detected at the site of measurement.
The scanner reports total carotenoid count, rather than individual carotenoid counts, as there is overlap in the absorption spectra of each carotenoid.
During the warm-up process, the black calibration cap, which covers the scanner's light-emitting diodes light, allows the scanner to self-calibrate using a patented process.
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6 weeks
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合作者和调查者
调查人员
- 首席研究员:Karin Allen, PhD、Utah State University
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
其他研究编号
- USU #6351
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)?
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