HMB (beta-hydroxy beta-methylbutyrate)

HMB is a metabolite of the branched chain amino acid Leucine. Found in many foods (vegetables and meat) it is also manufactured by the body and appears to increase the body's ability to build muscle and burn fat and has been shown to have a positive effect on protein metabolism. HMB is a supplement which has caused much controversy and many researchers regard it as a useless supplement that has produced spurious data in strength training tests, yet some athletes in the field support its use.

L-Glutamine

Glutamine is a non-essential amino acid which has a unique structure. It is the primary transporter of nitrogen into the muscle cell and is responsible for 35% of the nitrogen that reaches the muscle cells where it is synthesized for growth. Studies have indicated that supplementation with L-Glutamine can achieve the following:1) Increased protein synthesis which, in basic terms means the ability to build muscle. 2) It spares muscle tissue being catabolized (broken down) in order to provide glutamine for other cells in the body, therefore allowing the muscle tissue to use glutamine to synthesize new protein tissue. Catabolism occurs when Glutamine leaves the muscle causing the cells to discharge water and become dehydrated. L-Glutamine supplementation ensures that high levels of Glutamine are maintained within the cells meaning no discharge of water or Catabolism. 3) Prevent Glutamine depletion in muscles after workouts. Under periods of stress, including hard and intensive workouts, your body may not be able to make all of the Glutamine that it requires. Studies indicate that supplementing with L-glutamine is effective in the replacement of these declining levels. 4) Also, It has been suggested that L-Glutamine supplementation can have a positive effect on growth hormone levels. Some studies have also shown that L-Glutamine may serve to boost the immune system.

Conclusion

No supplement is really necessary, given that a well planned diet is followed. However, it may become useful at times to use supplements to save time and for general convenience.

The above article is given as a guide to the complex world of sports supplements and should be used for educational purposes only. Although some of these dietary practices are safe others have no medical backing and one should seek medical advice before taking any supplement.