Department of Nutritional Sciences, University of Texas, Texas, USA.
Obesity (Silver Spring). 2014 May;22(5):E77-84. doi: 10.1002/oby.20487. Epub 2013 Dec 2.
To investigate the impact of eating frequency on dietary intake, physical activity (PA), metabolic, and adiposity measures in minority youth.
This analysis included 185 overweight (≥85th BMI percentile) Hispanic and African-American youth (8-18 years) with the following cross-sectional measures: height, weight, BMI, dietary intake, body composition, metabolic parameters, PA, visceral adipose tissue (VAT), and subcutaneous adipose tissue. Each eating occasion (EO) was defined as ≥50 calories and ≥15 minutes from any previous EO. Participants were dichotomized based on EOs per 24-h into meal skippers <3 EO (MS; n = 27) or normal/frequent eaters ≥3 EO (NFE; n = 158). ANCOVAs were used to assess dietary intakes, metabolic outcomes, adiposity, and PA between eating frequency groups.
MS compared to NFE consumed 24% fewer calories per 24-h (P ≤ 0.01), 21% more calories per EO (P ≤ 0.01), ate 40% less often (P ≤ 0.01), had 18% higher triglycerides (P = 0.03), and 26% more VAT (P = 0.03), with no differences in PA.
Although meal skipping was associated with decreased energy intake, it was linked to increased calories per EO and higher triglycerides and VAT, which are strong indicators of deleterious metabolic profiles. These findings elucidate that meal skipping may be associated with increased VAT and related metabolic diseases in high-risk minority youth.
探讨进食频率对少数族裔青少年饮食摄入、体力活动(PA)、代谢和肥胖指标的影响。
本分析纳入了 185 名超重(≥85 百分位 BMI)的西班牙裔和非裔美国青少年(8-18 岁),并进行了以下横断面测量:身高、体重、BMI、饮食摄入、身体成分、代谢参数、PA、内脏脂肪组织(VAT)和皮下脂肪组织。每个进食时段(EO)定义为≥50 卡路里和≥15 分钟,且与之前的任何一个 EO 无重叠。根据 24 小时内的 EO 次数,参与者被分为餐食跳过者(MS;<3 EO,n=27)或正常/频繁进食者(NFE;≥3 EO,n=158)。采用协方差分析(ANCOVA)评估两组间的饮食摄入、代谢结局、肥胖和 PA。
与 NFE 相比,MS 每天的总热量摄入减少 24%(P≤0.01),每个 EO 的热量摄入增加 21%(P≤0.01),进食次数减少 40%(P≤0.01),甘油三酯增加 18%(P=0.03),VAT 增加 26%(P=0.03),而 PA 没有差异。
尽管餐食跳过与能量摄入减少有关,但与每餐摄入的热量增加以及甘油三酯和 VAT 升高有关,这是有害代谢特征的重要指标。这些发现表明,在高风险的少数族裔青少年中,餐食跳过可能与 VAT 增加和相关代谢疾病有关。