Athletes in regular training often manifest intracellular magnesium deficiency in exercising muscles due to accelerated demand and use, inadequate dietary intake, and increased losses through urine and sweat during exercise.

Magnesium is required for most ATP using enzymes, in fact it forms a complex called the Mg-ATP complex. This complex is required for muscular contraction, protein synthesis and energy production, hence is very important for athletic performance.

Magnesium deficient athletes may suffer muscle weakness, neuromuscular dysfunction, cramping and spasm or structural damage to myofilaments.

Several researchers have discovered improved performance with magnesium supplementation. Female endurance athletes taking magnesium supplementation (15 mmol/day) found they could run at maximal intensity for longer, that submaximal O2 uptake decreased by 10 per cent, whereas maximal oxygen uptake (VO2) increased with a parallel change in work load. This data suggests an improvement in oxygen utilisation during magnesium supplementation, in female endurance athletes not exhibiting magnesium deficiency signs. 

In a double-blind randomized study, 23 triathletes competing in an event consisting of a 500-meter swim, a 20-km bicycle race, and a 5-km run were studied after 4-week supplementation with placebo or magnesium.  Swimming, cycling, and running times decreased in the Mg group compared with the controls.  Blood leukocyte count in the magnesium group did not increase as much as the control group indicating that magnesium reduces the inflammatory impact of exercise.  This is also shown by the serum cortisol being lower in the Mg group before and after the test compared with the controls.

Another study was done on magnesium depleted individuals, the outcome of the study was that magnesium deficiency caused muscle weakness, and that by restoring magnesium levels muscle power can be improved. Magnesium therapy in athletes has been shown to have an oxygen sparing effect, it was also able to increase the clearance of lactic acid, increase muscle strength and power output, improve performance and prevent muscle spasm and cramping.

Supplementing with Endura Rehydration formula should not only correct magnesium deficiencies, it will also provide the athlete with an easy to digest carbohydrate source, in doing so it will replace glycogen levels.

Many glucose sport drinks have been linked with reduced endurance performance due to their high concentration or osmolarity, which causes delayed gastric emptying of fluids, osmotic influx of water into the gut with resultant dehydration. Fortunately Endura Rehydration formula does not have this problem.

A number of studies have looked at the effects of different types of liquid carbohydrate solutions and athletic performance. Glucose polymer-fructose at a concentration of between 6-10% has been proven to provide superior results since they minimally delay gastric emptying of fluids, and also provide the necessary calorie load to meet energy expenditure. The Endura Rehydration formula contains this form of glucose.

A study by Kingress using cyclists, compared glucose polymer fructose diet (GPFD) with the high carbohydrate diet used by most athletes (for glycogen loading) and showed that the cyclists consuming both GPFD and the high carbohydrate diet had an amazing 126% improvement in performance over the group using only the high carbohydrate diet.

Bohl H et al. Magnesium and exercise Critical Reviews in Food Science and Nutrition; 2002; 42, 6; Health & Medical Completepg. 533
Bohl H et al. Magnesium and exercise Critical Reviews in Food Science and Nutrition; 2002; 42, 6; Health & Medical Completepg. 533
Gatteschi L, Galvan P, Orsi F, Rubenni MG, Resina A. Relationship between blood magnesium changes and physical performance. 15th Symposium der Gesselschaft fur Magnesium forschung September 1992.
Golf SW, Bender S, Gruttner J. On the significance of magnesium in extreme physical stress. Cardiovasc Drugs Ther. 1998 Sep;12 Suppl 2:197-202.
Dhingra S et al Hypomagnesemia and respiratory muscle power. Am Rev Respir Dis. 1984 Mar;129(3):497-8.
Cason, I. et al. Changes in Magnesium Concentration in Endurance Athletes. Imt. J. Sports Med. 11:234-237 (1990)
Lindberg GS and Shapiro, Y. Changes in Serum Magnesium Concentration after Strenuous Exercise. J. Am. Coll. Nutrition Vol 6 No 1 p35-40, 1987
Schmidt. M et al. The Effects of magnesium supplementation on the energy metabolism in competitive swimmers. Magnesium Res. 1989(2)p296
Brilla L, Haley T. Effect of Magnesium Supplementation on Strength Training in Humans. J Am Coll Nutr.(1992), 11: 326-329.
Williams C, et al. Influence of fluid intake on endurance running performance. A comparison between water, glucose and fructose solutions. Eur J Appl Physiol 1990;60:112-119.
Kingress B. Effect of glucose polymer ingestion on energy and fluid balance during exercise. J Sports Sci 1989;7:3-8.

Option One - Buy two or more Endura Rehydration 800g
SportRecovery is please to offer a new discount to those purchasing two or more Endura Rehydration 800g in any one order. If you buy more than one Endura Rehydration 800g you will only pay $25.45 per Rehydration (instead SportRecovery's price of $27.45 for a single Rehydration 800g). This is a huge saving - the RRP for Endura Rehydration 800g is $34.95!!! Endura Rehydration comes in four great flavours - Lemon Lime, Orange, Raspberry and Pineapple.

Option Two - Endura Rehydration 2kg
Another great way to save on your Endura Rehydration is to buy it in a 2kg tub. Unfortunately the only flavour available in the 2kg tub is Lemon Lime.

Option Three - SportRecovery's Endura Pack
As Endura's most popular item, Endura Rehydration features in all of SportRecovery's Endura Packs. Exclusive to SportRecovery, these Packs are a great way to maximise your savings!

For athletes to perform at their best they need to be well hydrated. Without sufficient water intake to sustain an adequate sweating rate during exercise, dehydration will occur.  This results in an increase in body temperature and loss of performance.  Once water loss exceeds 2-3% of body weight there is a drop in maximal work capacity, power output and performance.  Thirst is a poor indicator for fluid replacement, usually lagging about 0.5-1 hour behind and accounting for only 50-60% of fluid lost during exercise.  Fluid replacement will vary considerably under different circumstances, with amounts of 1-1.5 litres per hour usually providing enough hydration to maintain the temperature reducing effects of sweating.

Lack of electrolytes like sodium, magnesium, potassium, calcium and chloride in the proper ratios will also contribute to intracellular muscle dehydration.  As dehydration occurs, the muscle cells cannot remove the metabolic acids, lactate and ammonia, which accumulate, this will cause muscle cell fatigue and damage.

The electrolytes in the Endura's Rehydration formula are provided in ratios similar to those found in the muscle cells.  This would indicate a relatively high intake of magnesium and potassium compared to sodium and calcium, which are high in the extracellular environment.  Unfortunately, most sports drinks provide the reverse, as they are high in sodium.

The new 500ml bottles of the Endura Sports Gel (below) are proving extremely popular. Each 500ml bottle is the equivalent of 19 Gel sachels (each Satchel contains 26.4ml of gel). The bottle has a resealable lid and once opened should be stored in the refrigerator. 

The new bottles come in Citrus and Vanilla and will allow athletes to refill their own gel containers as an alternative to using single serves. This product offers yet another cost saving to SportRecovery customers. For further information go straight to the Products page