torsdag 28 januari 2010

Antioxidants Can Impair Muscle Function

Some Antioxidants Reduce Vasodilators:

"Antioxidant therapies that reduce levels of vasodilators will reduce oxygen delivery to muscle.

'We're now learning that if antioxidant therapy takes away hydrogen peroxide – or other naturally occurring vasodilators, which are compounds that help open blood vessels – you impair the body's ability to deliver oxygen to the muscle so that it doesn't work properly,' Poole said.

The body produces free radicals to serve signaling functions. Unfortunately these same free radicals damage us."

måndag 25 januari 2010

Vitamin C and E Supplementation And Insulin Sensitivity

Four Ways to Jack Up Insulin Sensitivity:

Vitamin C and E supplementation post-workout may not be a good idea.

"In this study, 40 young men exercised five days a week (50 minute sessions including cycling and circuit training) for four weeks. The addition of vitamin C and E supplementation in that group completely eliminated the beneficial insulin-sensitizing effects of exercise!

With further investigation it seems that the post-workout increase in reactive oxygen species (ROS) — which is blunted by C and E supplementation — is a necessary phenomenon for increasing insulin sensitivity. The argument for the temporal benefit of ROS post-workout is strengthened by the fact that long term antioxidant supplementation has been shown to increase insulin sensitivity."

tisdag 12 januari 2010

Cholesterol-rich Foods Help You Gain Muscle

Seven Things You Need to Know About Fats:

"They fed older guys (in their 60's) extra cholesterol-rich foods and had them train with weights. Those who had higher cholesterol diets gained more lean mass than those who trained but didn't eat the cholesterol-rich foods."

Cholesterol it is not bad it is necessary. It's converted into Vitamin D by sunlight, and it's the precursor for steroid hormones like testosterone.

söndag 10 januari 2010

Calcium Supplementation Increase Testosterone Levels

Testosterone levels in athletes at rest and exhaustion: effects of calcium supplementation[Biol Trace Elem Res. 2009] - PubMed result:

Calcium boosts testosterone.

"Our results show that training results in increased testosterone levels in athletes and that the increase is greater if accompanied by calcium supplementation, which may be useful for increasing overall athletic performance."