Endurance activities are always challenging because of longer hours and as the hours roll on, our body demands more energy. As the demand for energy starts to increase, the body simply cannot process fats quickly enough to meet demand and so the use of glucose becomes gradually more predominant. Unlike fat, glucose, in the form of glycogen is stored in exceptionally limited quantities. During high-intensity endurance exercise or performance, glycogen can become severely depleted and energy levels drop significantly, and subsequently, the pace of exercise/performance drops significantly.
Consuming exogenous sources of carbohydrates provides an alternative source of carbohydrates to fuel energy. Therefore, athletes often load them with carbohydrates in the form of carbohydrate sources like sugar-loaded foods or glucose-based sports nutrition products to meet their energy demands in between the races. However, ingesting higher amounts of carbohydrates can create an “over-dose” effect, which can impair performance and affect endurance capacity.
This is because while we can consume any amount of carbohydrates in an hour, we can only oxidize and absorb a very specific amount. The human body at its maximum capacity can only transport glucose at a rate of 1 gram per minute resulting in 60 grams per hour because there is a bottleneck within the human digestive tract that limits the amount of glucose that could enter the bloodstream to be sent to the muscle for energy. The glucose transporter called SGLT-1 in the intestine becomes saturated at 60 grams/hour and is thus unable to transport excess glucose in the intestinal into the blood. This leads to excess glucose in the intestinal tract which sets off a chain of unpleasant experiences some of which manifest in the form of GI distress, stomach, and abdominal pain, and result in athletes slowing down or dropping out due to severe discomfort .
Therefore, with the desire to deliver the maximum hourly caloric intake via carbohydrates, while also reducing potential GI stress during long training sessions, long grueling races, and long activities at challenging climatic conditions, we developed Unived Drink Mix 160 with a 2:1 ratio of carbohydrates with supporting ingredients like electrolytes, osmolyte, and others.
- Jentjens, Roy LPG, and Asker E. Jeukendrup. “High rates of exogenous carbohydrate oxidation from a mixture of glucose and fructose ingested during prolonged cycling exercise.” British Journal of Nutrition4 (2005): 485-492.