Pre- And Post-Exercise Protein Supplements Increase Muscles Size And Strength
December 18, 2008 | Leave a Comment
Are you aware that the importance of nutrients timing has been one of the most vital concepts discovered by sports nutritionists in the last forty years? That’s because in the 1960s and 1970s, researchers discoverd that feeding carbs within the first few hours after exercising accelerated glycogen (stored carbohydrate) Resynthesis in the muscles and even liver. Today, scientists found that feeding protein-carbohydrate supplements before or after resistive exercise caused big increases in strength and muscles mass than weight training alone. At the beginning, we believed that supplement protein provided amino acids for more muscle protein growth.
Amino acids from protein act as signaling chemicals
Finnish researchers, led by Juha Hulmi, concluded that the amino acids from protein act as signaling chemicals that activate genes intermingled in protein synthesis (cyclin-dependent kinase 2 gene expression; cdk2). High-quality protein supplements (15 grams whey isolate protein) fed instantly prior to and after weight training enlarged muscle mass and some measures of strength more than a placebo or weight training are better for enlargng muscle strength and size.
(Amino Acids, in press; published online June 12, 2008)
