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betes is a growing problem in the population: according to Diabetes UK there are 3% (1.8 million) diagnosed cases (approximately 250 thousand with type 1 and over 1,Red Bottom Shoes.5 million with type 2) and another estimated 750 thousand to 1 million undiagnosed cases of type 2 diabetes. No statistics are available for the athletic population.
What is diabetes?
Diabetes is a syndrome or group of symptoms arising from failure to regulate the metabolism of glucose by means of the pancreatic hormone, insulin. This occurs due to a lack of insulin because the pancreas does not produce enough, fails to produce any or the body fails to make proper use of the insulin that is available. Diabetes is classified as insulin-dependent (type 1) and non-insulin-dependent (type 2). This paper will focus on the latter and will ignore any genetic predisposition to the disease,Red Bottoms.
The glycaemic index and diabetes
The Glycaemic Index (GI) can be considered as a measure of carbohydrate quality. It measures the postprandial (after a meal) glycaemia (plasma glucose) raising potential of a single food by expressing the rise in glycaemia in response to a 50g available carbohydrate portion of that food as a percentage of the rise in response to a 50g available carbohydrate portion of a reference food (white bread or glucose),Red Sole Shoes.
Foods high on the GI result in a sharp rise of plasma glucose, with a high demand for insulin, followed by a more or less rapid fall of glucose,http://www.theredbottoms2013.com. Foods that are low to moderate on the GI produce a slower rise, with a lower demand for insulin, and a more gradual decline in plasma glucose.
Those in favour of carbohydrate quality, argue that GI is a robust measurement, predicts the relative glycaemic response to mixed meals and is easy to follow and implement. In contrast, opponents who favour giving priority to carbohydrate quantity argue that GI is highly variable, not physiological, cannot reliably predict mixed meal responses and is difficult to learn or follow.
Despite some opposition to low-GI intervention in type 2 diabetes, the interventions are clinically efficacious in diabetes therapy over the mid to long-term. The Canadian Diabetes Association, Diabetes Australia, Diabetes UK and the European Association for the Study of Diabetes all support the application of the GI concept in the management of diabetes.
Insulin resistance
Insulin resistance, a component of the Insulin Resistance Syndrome, also known as Syndrome X and the Metabolic Syndrome, is associated with type 2 diabetes. No statistics for insulin resistance are available in the UK, although, according to Diabetes UK, a national register may be set up in the future.
Obesity is the most significant factor leading to insulin resistance with visceral obesity having a particularly strong negative correlation. It can be reversed with diet modification based on a low-fat intake and limiting refined carbohydrates without the need of caloric restrictions. Physical activity is an important factor in reversing the problem.
Mechanisms leading to insulin resistance are unclear, although the abnormal accumulation of certain fats in the liver (hepatic steatosis) is a contributing factor.
In a study by Pan et al, skeletal muscle triglyceride (mTG) appeared to be another important factor in predicting insulin resistance. Trained athletes and animals show the same or higher levels of muscle triglycerides as sedentary controls but have improved insulin action. The authors postulated that this could be due to the distribution of triglyceride. Endurance exercise increases both the mitochondrial volume and distribution in skeletal muscles. In trained dogs, mitochondria appear virtually in direct contact with triglyceride droplets whereas no such association with mitochondria was found in untrained animals. As a result, trained individuals may have an improved ability to mobilise fats.
Research into sucrose and fructose on animals h
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