Department of Nutrition Sciences, Drexel University, Philadelphia, PA 19102, USA.
Clinical Nutrition Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Nutrients. 2022 Feb 19;14(4):884. doi: 10.3390/nu14040884.
"Loss of control, LOC" eating is a major contributor to the development of obesity. Dietary protein is known to promote satiety, but little attention has been paid to the ability of protein, consumed in close proximity to snacking (20 min), to reduce the intake of ultra-processed, low-protein snack foods. We hypothesized that a high-protein preload (HP, 8 g of protein) consumed in close proximity to eating an ultra-processed snack food would reduce intake of the snack food as compared to a low-protein preload (LP, 1.2 g of protein). Two laboratory test meals were conducted, and the intake of ice cream (1.99 kcal/gram) after consuming dairy-based liquid preloads was measured. Habitual physical activity, a potential modulator of satiety, was assessed by a self-reporting questionnaire. Thirty (responders) out of 50 participants reduced their intake of ice cream after the HP preload, with a significant difference in intake observed between the responders and non-responders (-30 ± 25 and 18 ± 18 g, F (1, 49) = 54.36, < 0.001 for responders and non-responders, respectively). Our data demonstrate that protein consumed in close proximity to ultra-processed snack food can reduce caloric intake by ~60 kcal, which could potentially reduce body weight by at least 5 pounds per year.
“失控性进食”是肥胖发展的一个主要因素。众所周知，膳食蛋白质能促进饱腹感，但很少有人关注到在接近吃零食（20 分钟）时摄入蛋白质的能力，这种能力可以减少对超加工、低蛋白零食的摄入。我们假设，在接近食用超加工零食时摄入高蛋白预餐（HP，8 克蛋白质），与摄入低蛋白预餐（LP，1.2 克蛋白质）相比，会减少对零食的摄入。进行了两项实验室测试餐，测量了食用乳基液体预餐后摄入冰淇淋（1.99 千卡/克）的情况。习惯性体力活动是饱腹感的一个潜在调节剂，通过自我报告问卷进行评估。在 50 名参与者中，有 30 名（应答者）在摄入 HP 预餐后减少了冰淇淋的摄入量，应答者和非应答者之间的摄入量存在显著差异（-30 ± 25 和 18 ± 18 克，F（1，49）=54.36， < 0.001）。我们的数据表明，在接近超加工零食时摄入的蛋白质可以减少约 60 卡路里的热量摄入，这可能每年至少减少 5 磅的体重。
