Athletes commonly supplement their diet with protein powders (whether whey, casein, isolate etc) for an easy and convenient way to get extra protein in the diet.
• Whey Protein – Superior amino acid profile, high leucine content (an amino acid known to trigger muscle growth), fast digestion. Best to be used post-workout and is probably the most commonly used by people in training
• Whey Hydrolysate – A pre-digested form of whey protein, may deliver amino acids to the muscles slightly faster than regular whey protein. Pre training is ideal.
• Casein Protein – Slowly digested, made up of milk protein with a superior amino acid profile. Mainly used to aid recovery, and commonly used at night.
• Soy Protein – Complete amino acid profile, but a sub-optimal protein source due to also including protease (enzymes that digest protein) inhibitors and estrogen mimicking compounds.
• Blends – Mixed spectrum of protein compounds by a combination of, for instance, hemp, egg, whey and soy. This provides time-release effect of protein delivery. These can be filling and take a while to digest, so best not to use around workouts.