In any endurance exercise, hydration is key to the human body’s recovery as 75% of the energy produced from metabolism is in the form of heat. Due to this heat the body puts itself in an impossible state to carry on functioning, with dangers of heat illness, hence sweat is produced providing the primary cooling system for the body to prevent this from happening. This means that this fluid needs to be replaced hence why athletes are encouraged to rehydrate by drinking fluids to allow this cooling system to keep functioning, by replacing the fluids that are lost in sweat (Noakes, 2003).
This isn’t knowledge, however that has always been believed, prior to 1969 marathon runners were advised against rehydrating (NOAKES, 1993) as there was no scientific …show more content…
Lucozade took this approach, and in a 2013 advert claimed their product Lucozade Sport, “gives you the electrolytes and carbohydrates you need, hydrating you, fuelling you better than water." (Cohen, 2014) Plus at first development Gatorade made claims that their product could prevent and cure dehydration, heat stroke, and muscle cramps, and improve performance (Cohen, 2012) these claims may not have much scientific support (hence leading to the banning of Lucozade’s advert making that claim.) lead to a boom in sales for these isotonic drinks, and being the sort after solution to dehydration, due to their claims, its no surprise that they now serve a firm place in marathon running. The use of the drinks has lead to them being linked to the exercise associated disease Hyponatraemia that leads to athletes becoming critically ill due to a drop in their serum sodium (Cohen, 2012). The cause of this is keenly debated—in particular whether it is the volume or type of fluid consumption that is most to blame. Numerous studies have been carried out on this claim and conclusions suggest that there is no evidence that “consumption of sports drinks (electrolyte-containing hypotonic fluids) can prevent the development of exercise associated hyponatremia.” (Hew-Butler …show more content…
2012. The truth about sports drinks. BMJ, 345, e4737.
COHEN, D. 2014. Sports drinks adverts are banned for false claims. BMJ, 348.
FIXX, J. F. 1977. The complete book of running, Course Technology.
FOTHERINGHAM, W. 2012. Put me back on my bike: in search of Tom Simpson, Random House.
GOUDIE, A., TUNSTALL-PEDOE, D., KERINS, M. & TERRIS, J. 2006. Exercise-associated hyponatraemia after a marathon: case series. Journal of the Royal Society of Medicine, 99, 363-367.
HEW-BUTLER, T., AYUS, J. C., KIPPS, C., MAUGHAN, R. J., METTLER, S., MEEUWISSE, W. H., PAGE, A. J., REID, S. A., REHRER, N. J. & ROBERTS, W. O. 2008. Statement of the second international exercise-associated hyponatremia consensus development conference, New Zealand, 2007. Clinical Journal of Sport Medicine, 18, 111-121.
NEVILL, A. M. & WHYTE, G. 2005. Are there limits to running world records? Medicine and Science in Sports and Exercise, 37, 1785-1788.
NOAKES, T. 2003. Fluid Replacement during Marathon Running. Clinical Journal of Sport Medicine, 13, 309-318.
NOAKES, T. 2012. Waterlogged: the serious problem of overhydration in endurance sports, Human Kinetics.
NOAKES, T. D. 1993. Fluid Replacement During Exercise. Exercise and Sport Sciences Reviews, 21,
This isn’t knowledge, however that has always been believed, prior to 1969 marathon runners were advised against rehydrating (NOAKES, 1993) as there was no scientific …show more content…
Lucozade took this approach, and in a 2013 advert claimed their product Lucozade Sport, “gives you the electrolytes and carbohydrates you need, hydrating you, fuelling you better than water." (Cohen, 2014) Plus at first development Gatorade made claims that their product could prevent and cure dehydration, heat stroke, and muscle cramps, and improve performance (Cohen, 2012) these claims may not have much scientific support (hence leading to the banning of Lucozade’s advert making that claim.) lead to a boom in sales for these isotonic drinks, and being the sort after solution to dehydration, due to their claims, its no surprise that they now serve a firm place in marathon running. The use of the drinks has lead to them being linked to the exercise associated disease Hyponatraemia that leads to athletes becoming critically ill due to a drop in their serum sodium (Cohen, 2012). The cause of this is keenly debated—in particular whether it is the volume or type of fluid consumption that is most to blame. Numerous studies have been carried out on this claim and conclusions suggest that there is no evidence that “consumption of sports drinks (electrolyte-containing hypotonic fluids) can prevent the development of exercise associated hyponatremia.” (Hew-Butler …show more content…
2012. The truth about sports drinks. BMJ, 345, e4737.
COHEN, D. 2014. Sports drinks adverts are banned for false claims. BMJ, 348.
FIXX, J. F. 1977. The complete book of running, Course Technology.
FOTHERINGHAM, W. 2012. Put me back on my bike: in search of Tom Simpson, Random House.
GOUDIE, A., TUNSTALL-PEDOE, D., KERINS, M. & TERRIS, J. 2006. Exercise-associated hyponatraemia after a marathon: case series. Journal of the Royal Society of Medicine, 99, 363-367.
HEW-BUTLER, T., AYUS, J. C., KIPPS, C., MAUGHAN, R. J., METTLER, S., MEEUWISSE, W. H., PAGE, A. J., REID, S. A., REHRER, N. J. & ROBERTS, W. O. 2008. Statement of the second international exercise-associated hyponatremia consensus development conference, New Zealand, 2007. Clinical Journal of Sport Medicine, 18, 111-121.
NEVILL, A. M. & WHYTE, G. 2005. Are there limits to running world records? Medicine and Science in Sports and Exercise, 37, 1785-1788.
NOAKES, T. 2003. Fluid Replacement during Marathon Running. Clinical Journal of Sport Medicine, 13, 309-318.
NOAKES, T. 2012. Waterlogged: the serious problem of overhydration in endurance sports, Human Kinetics.
NOAKES, T. D. 1993. Fluid Replacement During Exercise. Exercise and Sport Sciences Reviews, 21,