What is the best nutrient for an athlete to consume 30 minutes before they swim five kilometres? (A) Fat (B) Fibre (C) Protein (D) Carbohydrate - HSC - SSCE Personal Development and Physical Education - Question 12 - 2009 - Paper 1

The best nutrient for an athlete to consume 30 minutes before an endurance event, such as swimming five kilometres, is a carbohydrate. Carbohydrates are essential as they provide a quick and easily accessible source of energy. When consumed prior to exercise, they can enhance performance and delay fatigue, making them the optimal choice for athletes needing to sustain energy levels during prolonged physical activity. In contrast, fats and proteins take longer to digest and are less effective for immediate energy needs.