The Acute Effect of Protein or Carbohydrate Intake on Testosterone Levels and Food Intake in Children and Adolescent Boys

Participants were given 5 minutes to ingest the non-caloric beverage which contained 1.5ml of chocolate extract (Vanilla Food Company, Markham, Ontario, Canada) to account for the flavor differences and mixed with 500ml of water and sweetened with 0.2g sucralose (Tate \& Lyle, Stoney Creek, Ontario, Canada) in order to match sweetness with the glucose beverage.

Participants were given 5 minutes to ingest the beverage which contained either 1g of protein (plain whey-protein isolate; BiPro USA., Eden Prairie, Minnesota, U.S.A) per kg of bodyweight and was flavoured with 1.5ml of chocolate extract (Vanilla Food Company, Markham, Ontario, Canada) to account for the flavor differences and mixed with 500ml of water.

Participants were given 5 minutes to ingest the beverage which contained 1g of glucose monohydrate (BioShop Canada Inc., Burlington, Ontario, Canada) per kg of bodyweight and flavoured with 1.5ml of chocolate extract (Vanilla Food Company, Markham, Ontario, Canada) to account for the flavor differences and mixed with 500ml of water.