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Milk Beats Soy For Post-weighlifting Muscle Gain

Date:
April 11, 2007
Source:
McMaster University
Summary:
A new study has found that milk protein is significantly better than soy at building muscle mass. The findings would suggest that if men consume only skim milk (two cups) after each of their workouts, they would gain almost twice as much muscle in 10 weeks than if they drank the same amount of protein as a soy drink.

Got milk? Weightlifters will want to raise a glass after a new study found that milk protein is significantly better than soy at building muscle mass.

The study, conducted by a team of researchers at McMaster University's Department of Kinesiology, was recently published in the American Journal of Clinical Nutrition. It compared how much muscle protein young men gained after completing a heavy weight workout followed by consumption of equivalent amounts of protein as either fluid skim milk or a soy drink.

"Our thinking going into the study was that milk would be better than soy. We suspected this would be the case because of work done by French researchers. However, we were really impressed by how much greater the gains in muscle protein with milk were," says Sarah Wilkinson, lead researcher and a graduate student in the department of kinesiology.

The findings would suggest that if men consume only skim milk (two cups) after each of their workouts, they would gain almost twice as much muscle in 10 weeks than if they drank the same amount of protein as a soy drink.

"This is an interesting finding, since soy and milk proteins are considered to be complete proteins that are basically equivalent from a nutritional standpoint," explains Stuart Phillips, associate professor of kinesiology, who was also involved in the study. "Our findings clearly show that milk proteins are a superior source of protein in producing muscle mass gains in response to weightlifting."

Scientists also analyzed the composition of milk and soy proteins and did not find remarkable differences. At this stage, researchers are uncertain why milk proteins were so much more effective than soy. However, the two main types of proteins in milk, whey and casein, may have intrinsic properties that are advantageous in terms of supporting muscle growth.

"The plan at this point is to follow this up with a long-term study to see if the findings from this short-term study can be replicated," says Phillips.

Funding for the study was made possible by the Canadian Institutes of Health Research (CIHR) and the US National Dairy Council.


Story Source:

The above story is based on materials provided by McMaster University. Note: Materials may be edited for content and length.


Cite This Page:

McMaster University. "Milk Beats Soy For Post-weighlifting Muscle Gain." ScienceDaily. ScienceDaily, 11 April 2007. <www.sciencedaily.com/releases/2007/04/070410113836.htm>.
McMaster University. (2007, April 11). Milk Beats Soy For Post-weighlifting Muscle Gain. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2007/04/070410113836.htm
McMaster University. "Milk Beats Soy For Post-weighlifting Muscle Gain." ScienceDaily. www.sciencedaily.com/releases/2007/04/070410113836.htm (accessed September 23, 2014).

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