In the tests, 0.15 units per kilogram of body weight produced the same response as 0.5 units of normal insulin.

BBC: Insulin smoke signals breakthrough

The American College of Sports Medicine recommends that endurance and strength training athletes consume higher levels of daily protein than the standard recommended daily allowance (i.e. 1.2-1.7 grams of protein for each kilogram of body weight, versus 0.8 grams per kilogram per day).

CNN: Could low iron, protein contribute to soreness after exercise?

Professional body builders consume up to 1.5 grams of protein per kilogram of weight each day, but unless you are spending several hours in the gym on a regular basis, this is too much for the average person trying to gain muscle.

CNN: How should I eat to build muscle mass?