Meat + Poultry - April 2005 - 48

NEW from
While the study's authors urged that the results
should be "interpreted with extreme caution" because of certain limitations within the study, the
findings were important in that it could help broaden
the market for soy products to include men. Until recently, the primary focus for makers of soy products
has been on the benefits of soy in helping prevent
osteoporosis and breast cancer.
No longer just for women
Soy has a long association in helping to prevent
the loss of bone tissue in postmenopausal women,
reducing osteoporosis. More recent research, though,
has shifted to the impact soy in the diet might have
on men.
New research from clinical trials conducted at The
Ohio State Univ., Columbus, suggests soy may have
added exercise benefits compared with other protein
sources. In a comparison of soy and whey protein bar
products, researchers gave men in a weight training
class at Ohio State either 33 grams of soy protein or
whey protein for nine weeks.
While both protein sources increased the muscle
mass of the men, participants who consumed the
whey protein bars experienced a corresponding
decline in their antioxidant status. Soy protein bar
consumers, though, maintained a healthy antioxidant
status, reducing free radical production during exercise and setting the stage for less muscle damage
and fatigue, the study showed.
In another study examining soy
protein and whey protein, researchers found that men who
consumed 40 grams per day of soy
protein for four weeks had lower
levels of lipid peroxide as early as
five minutes after exercising, compared
with men who consumed 40 grams of
whey protein and didn't have reduced
levels until 24 hours after exercise. High
levels of lipid peroxide contribute to oxidant
stress.
The significance of both studies comparing soy
protein and whey protein shows that not only can
soy help build muscle mass, but that it also provides
the added benefit of reducing oxidative stress through
the antioxidants naturally present in soy.
Link to lower blood pressure
Researchers at the Baylor College of Medicine in Houston are in the process of examining
how the chemicals in the soy plant may reduce
hypertension in menopausal women.

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Meat + Poultry - April 2005

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