Soy Versus Whey Protein

buy nutritional supplements

Soy Versus Whey Protein Bars: Effects On Exercise Training Impact On Lean Body Mass And Antioxidant Status by Erin C Brown , Robert A DiSilvestro , Ari Babaknia and Steven T Devor

Background
Although soy protein may have many health benefits derived from its associated antioxidants, many male exercisers avoid soy protein. This is due partly to a popular, but untested notion that in males, soy is inferior to whey in promoting muscle weight gain. This study provided a direct comparison between a soy product and a whey product.


Methods
Lean body mass gain was examined in males from a university weight training class given daily servings of micronutrient-fortified protein bars containing soy or whey protein (33 g protein/day, 9 weeks, n = 9 for each protein treatment group). Training used workouts with fairly low repetition numbers per set. A control group from the class (N = 9) did the training, but did not consume either type protein bar.


Results
Both the soy and whey treatment groups showed a gain in lean body mass, but the training-only group did not. The whey and training only groups, but not the soy group, showed a potentially deleterious post-training effect on two antioxidant-related related parameters.


Conclusions
Soy and whey protein bar products both promoted exercise training-induced lean body mass gain, but the soy had the added benefit of preserving two aspects of antioxidant function.

Click here for access to the full electronic version of this article.

© 2004 Brown et al

Nutrition Journal 2004, 3:22 doi:10.1186/1475-2891-3-22


Home | About Us | Contact Us | Site Map

top arrow
This website is © 2004-2022. All Rights Reserved.
The information included on this web service may include inaccuracies or typographical errors. I and any third party suppliers provide all content in this service "AS IS", and without any warranty of any kind.