Whey protein is beneficial in supporting
muscle adaptations due to its rapid absorption
rate in addition to casein that has a slower and
more sustained rate of amino acid absorption
over a few hours. Branched chain amino
acids are similarly beneficial and have been
shown to aid in recovery from exercise with
respect to not only protein synthesis but also
aiding in replacing our muscle glycogen and
delaying fatigue associated with exercise.
Generally, naturally occurring animal proteins
contain 2:1:1 ratio of leucine, isoleucine and
valine. These proteins have been identified
as providing optimal support of muscle
adaptations with exercise training. In order to
meet the recommended RDA a consumption
of approximately 45 mg/kg/day of leucine and
22.5 mg/kg/day of isoleucine and valine is
suggested.