Abstract Aim This study aimed to investigate nutritional factors which could counteract the benefits of whey protein (WP) supplementation in older adults whilst performing resistance training (RT). These included food group intakes, nutrient intakes and satiety ratings. This investigation was a sub-study of a larger trial investigating RT and WP supplementation among older adults. Methods Thirty-six older adults (mean ± SD: BMI 26.2 ± 3.6 kg/m2) consumed a WP beverage containing 30 g WP and 200 mL water three days/week across 11 weeks, immediately following 1-h of RT. A 3-day weighed food record was completed 4-weeks prior to the study, at baseline and at week 11, to examine overall food group and nutrient intakes. At weeks 1–3, 6–8 and 11, a visual analogue scale assessed satiety. Results At week 11 compared to baseline, consumption of fruit (p = .039) decreased; milk and milk alternatives increased (p Conclusions Increased milk consumption and dietary protein was an expected benefit of WP supplementation. However, a decline in fruit serves was noted. Future research should further examine longer-term effects of WP on nutritional status in the aging population.

中文翻译：

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在为期 11 周的运动干预中，老年人补充乳清蛋白对营养摄入和饱腹感的影响

摘要 目的本研究旨在调查营养因素可能抵消老年人在进行阻力训练 (RT) 时补充乳清蛋白 (WP) 的益处。这些包括食物组摄入量、营养摄入量和饱腹感评级。这项调查是对老年人中 RT 和 WP 补充剂进行调查的大型试验的子研究。方法 36 名老年人（平均 ± SD：BMI 26.2 ± 3.6 kg/m2）在 1 小时的 RT 后立即饮用含有 30 g WP 和 200 mL 水的 WP 饮料，持续 11 周，每周三天。在研究前 4 周、基线和第 11 周完成为期 3 天的称重食物记录，以检查总体食物组和营养素摄入量。在第 1-3、6-8 和 11 周，视觉模拟量表评估饱腹感。结果 在第 11 周与基线相比，水果消费量 (p = .039) 减少；牛奶和牛奶替代品增加（p 结论 牛奶消费量和膳食蛋白质的增加是补充可湿性粉剂的预期益处。然而，注意到水果供应量下降。未来的研究应进一步研究可湿性粉剂对老龄化人口营养状况的长期影响.