Which nutrients are best for providing energy? Muscles use two main fuels - carbohydrate and fat. Carbohydrates provide rapidly available energy and are therefore the most important energy source for short, intense exercise like sprinting. When exercising at full capacity, the energy requirement is so great and needed so quickly, that only carbohydrates can produce energy fast enough. The body stores limited amounts of carbohydrates - enough for approximately 20 to 30 minutes of moderate exercise. After this, if fat cant be converted to energy during high intensity exercise, the body becomes fatigued. The body can use fat for supplying energy during longer periods of exercise at a more moderate pace. For those people exercising to help lose weight, its best to exercise for longer periods at a moderate level to burn fat, ie walking or jogging for longer than 30 minutes. Whatever the intensity of the exercise, some carbohydrates are always used, and its important to replenish stores before the next session. It‘s best to top up carbohydrates straight after exercising by eating bananas or drinking high-energy fruit juice-water mixes or sport drinks.
Posted on: Thu, 07 Nov 2013 07:30:56 +0000
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