First Endurance continues to stay at the forefront of endurance nutrition by developing the EFS Endurance bar. With the new EFS endurance bar, you get the same award-winning EFS drink formula in a great tasting bar that provides ALL the ingredients you need to maximize performance. The EFS bar is fortified with clinically effective doses of the amino acids Glutamine, Leucine, Iso-leucine and Valine to improve glycogen resynthesis and delay central fatigue (1,2). It also provides 200% RDA of Vitamin C to enhance the body's immune function, fight free radicals and keep you healthy for future training and racing (3,4). The EFS bar is made with all natural ingredients and (when possible) organic ingredients.

The EFS bar is the first bar formulated to maximize performance while exercising. It's the only bar that privides an ideal mix of maltodextrins and simple sugars as the primary fuel source. Clinical evidence shows that a mix of carbohydrates significantly improves oxidation and absorption over any single source of carbohydrates (5-9). Plus, each EFS bar gives you all five electrolytes (over 1,000mg/bar), in the levels endurance athletes require, to prevent cramping and dehydration (10). So you don't need to carry those extra electrolyte pills or add anything else to your bottles anymore.

First Endurance sponsored cyclists, triathletes, runners and swimmers have worked closely with First Endurance on the development of the new endurance bar. First Endurance sponsored athletes and teams started testing the prototype bars early in 2006. After initial testing, these athletes gave the First Endurance R&D team important input and feedback on the bars. This feedback was compiled and evaluated and th appropriate changes were made to ensure the bar is exactly what endurance athletes require for racing and training. Nothing else even comes close.

Ingredients: Complex Carbohydrates, Protein Blend (whey protein isolate, whey protein concentrate, rice protein), organic brown rice, peanut butter, natural chocolate chips (sucrose, coacoa powder, whey powder, nonfat milk powder, natural vanilla), organic tapioca syrup, organic rolled oats, glycerine, gum arabic, organic evaporated cane juice, water, rice flour, peanut flour, calcium carbonate, natural flavor, salt, rice bran extract, canola oil, tripotassium phosphate, magnesium oxide, tricalcium phosphate, ascorbic acid.

Natural Flavors, Colors and Sweeteners.

= Typical Amino Acid Profile

References:
1. Bassit RA, et. al, Branched-chain amino acid supplementation and the immune response of long-distance athletes. Nutrition. 2002 May;18(5):376-9

2. Blomstrand E, Celsing F, Newsholme EA. Changes in plasma concentrations of aromatic and branched-chain amino acids during sustained exercise in man and their possible role in fatigue. Acta Physiol Scand. 1988 May;133(1):115-21.

3. Peake, J. M. (2003). Vitamin C: Effects of Exercise and Requirements with Training. IJSNEM, 13, 125-151.

4. Urso ML, Clarkson PM. Oxidative stress, exercise, and antioxidant supplementation. Toxicology. 2003 Jul 15;189(1-2):41-54.

5. Jentjens RL, Achten J Jeukendrup AE. High oxidation rates from combined carbohydrates ingested during exercise. Med Sci Sports Exerc. 2004 Sep: 36(9): 1551-8.

6. Jentjens RL. Moseley L. Waring RH, Harding LK, Jeukendrup AE. Oxidation of combined ingestion of carbohydrates during exercise. J of Appl Physiology 2004 Apr 96(4) 1277-84.

5. Jentjens RL. Underwood K. Achten J, Currell K, Mann CH, Jeukendrup AE. Exogenous carbohydrate oxidation rates are elevated after combined carbohydrate sources during exercise in heat. J Appl Physiol. 2006 Mar; 100(3):807-16.

8. Wallis GA, Rowlands DS, Shaw C, Jentjens RL, Jeukendrup AE. Oxidation of combined ingestion of maltodextrins and fructose during exercise. Med Sci Sports Exerc. 2005 Mar; 37(3): 426-32.

9. Jentjens RL, Venables MC, Jeukendrup AE. Oxidation of exogenous glucose, sucrose and maltose during prolonge cycling exercise. J Appl Physiol. 2004 Apr: 96(4): 1285-91.

10. Brouns, F., et al. 1992 Rationale for upper limits of electrolyte replacement during exercise. Int J Sport Nutr 2:229-38.