Well Doug Weight is already super human, so he underwent this procedure to make him "Captain America" just to see if it would do anything and how high the limits of a human could be. It took awhile, but eventually there was a noticeable difference. His Body didn't change at all, but all his skills and mental capacities were enhanced. He was able to think more clearly, not having to rely on mainstream media for anything anymore, he knew everything that was happening in the world and the actual truth right away. His teammates started to come to him for news. His hockey senses and skills were also so amazing, that he could play on his own against 5 opponents and easily dominate the competition. Maine actually started using him as a one man penalty kill and giving the other players 2 minutes to rest while he helped improve the PK