Assessment of the Optimal Amount of Proteins at Breakfast for Children

Inclusion Criteria: * Aged between 7-12 years of age * Healthy and recreationally physically active (obtaining a 3- day average moderate/vigorous physical activity of at least 30 min/day) * Body mass at ≥10th percentile for 7 year olds and ≤85th percentile for 12 year olds. Values based upon 2000 CDC Growth Charts for the United States * Having obtained his/her informed assent * Having obtained his/her consent from parent or legal guardian * Being able to communicate in local language * Have a habitual daily protein consumption of between 1.6 g/kg and 2.4 g/kg/bw Exclusion Criteria: * Self-report on regular medication impacting the metabolism, such as corticoids, hormone (e.g thyroid, adrenal) treatment, or medication against diabetes or against hypercholesterolemia or hypertriglyceridemia * Self-reported history of metabolic, hepatic or renal disease * Self-reported allergy to milk proteins (e.g., whey or casein) or intolerance to any food ingredients to be used in the study products and meals * Within 1.5 years of estimated age of peak height velocity (PHV) * Special diet or weight loss program (e.g Atkins diet) * Consuming breakfast containing more than 21g of protein on each day of the 3-d screening period * Subject who cannot be expected to comply with the study procedures, including unwillingness to consume study product and meals * Currently participating or having participated in another nutritional-clinical trial during the last 2 months prior to the beginning of this study