J Acad Nutr Diet. 2021 Aug;121(8):1507-1514. doi: 10.1016/j.jand.2021.02.019. Epub 2021 Apr 2.
Latino early adolescents have a high prevalence of overweight and obesity. Interventions to address healthy eating among Latino youth frequently focus on fruit and vegetable (FV) intake. Reflection spectroscopy assessed skin carotenoid (SC) levels has been proposed as an easy, noninvasive method to evaluate FV intake, but validation studies involving ethnically diverse youth are lacking.
This study aimed to assess the association between reflection spectroscopy-measured SC scores and self-reported FV intake among low-income, urban, Latino early adolescents, controlling for potential confounding factors.
This study was a cross-sectional secondary analysis of baseline data from a community-based intervention program (Padres Preparados, Jóvenes Saludables) involving Latino fathers and adolescents to improve paternal parenting practices and youth energy balance-related behaviors.
PARTICIPANTS/SETTING: Participants were 195 low-income, Latino early adolescents (aged 10 to 14 years). Data were collected in the Minneapolis/St Paul metropolitan area from 2017 to 2020 during fall or winter months.
SC scores were measured using reflection spectroscopy, usual intakes of FV and carotenoid compounds were estimated based on the assessment using 24-hour dietary recalls.
Multivariable linear regression analyses were used to estimate associations of SC scores and each dietary component and potential confounding factors after assessing variables for inclusion in the analyses.
The mean SC score was 225 ± 95. The mean FV and total carotenoid intakes were 3.3 ± 0.5 servings/day and 8,360 ± 786 μg/day, respectively. Higher SC scores were observed among youth who had higher FV (β = .37 and P < 0.01) or total carotenoid intakes (β = .31 and P < 0.01). SC scores measured during fall were higher than scores measured during winter. Study participants with higher home FV availability and accessibility had higher SC scores.
Findings supported using SC score as a potential easy-to-use indicator of FV intake among Latino youth with consideration of seasonal variation and home FV availability and accessibility.
拉丁裔青少年超重和肥胖的发生率很高。针对拉丁裔青少年健康饮食的干预措施通常侧重于水果和蔬菜（FV）的摄入量。反射光谱评估皮肤类胡萝卜素（SC）水平已被提议作为一种简单、非侵入性的方法来评估 FV 的摄入量，但涉及多种族青少年的验证研究却很少。
本研究旨在评估反射光谱测量的 SC 评分与低收入、城市、拉丁裔青少年自我报告的 FV 摄入量之间的关联，同时控制潜在的混杂因素。
这是一项基于社区的干预计划（Padres Preparados，Jóvenes Saludables）的基线数据的横断面二次分析，该计划涉及拉丁裔父亲和青少年，旨在改善父亲的育儿实践和青少年与能量平衡相关的行为。
参与者/设置：参与者为 195 名低收入、拉丁裔青少年（10 至 14 岁）。数据于 2017 年至 2020 年秋季或冬季在明尼阿波利斯/圣保罗大都市区收集。
使用反射光谱法测量 SC 评分，根据 24 小时膳食回忆评估来估计 FV 和类胡萝卜素化合物的常规摄入量。
采用多变量线性回归分析来估计 SC 评分与每种饮食成分的关联以及在评估变量后纳入分析的潜在混杂因素。
SC 评分的平均值为 225±95。FV 和总类胡萝卜素的平均摄入量分别为 3.3±0.5 份/天和 8360±786μg/天。在 FV（β=0.37，P<0.01）或总类胡萝卜素摄入量（β=0.31，P<0.01）较高的青少年中，SC 评分较高。秋季测量的 SC 评分高于冬季。家中 FV 供应和可及性较高的研究参与者的 SC 评分较高。
这些发现支持将 SC 评分作为一种潜在的简单易用的指标，用于评估拉丁裔青少年的 FV 摄入量，但需考虑季节性变化以及家中 FV 的供应和可及性。
