NCSF Sport Nutrition Specialist Certification (SNS) Practice Test

What effect do medium-chain triglycerides have on sprint performance?

1. Increase sprint performance

2. Improve body composition

3. Aid in glycogen sparing

4. Reduce sprint performance

The correct answer is: Reduce sprint performance

Medium-chain triglycerides (MCTs) are fatty acids that are absorbed and metabolized differently from long-chain triglycerides. Their rapid absorption can provide a quick source of energy; however, during high-intensity exercise such as sprinting, the body primarily relies on carbohydrates as the main source of fuel. Incorporating MCTs before or during sprint performance could potentially lead to gastrointestinal discomfort and may not provide the immediate energy needed for optimal performance in such a short, intense activity. Studies indicate that while MCTs can be beneficial for prolonged aerobic exercises, they may not aid in the explosive energy demands required for sprint performance. Therefore, relying on MCTs could inadvertently reduce sprint performance due to their slower energy utilization compared to carbohydrates, which are preferentially used during high-intensity efforts. Understanding these metabolic processes highlights why utilizing MCTs may not enhance sprint performance and could stand in contrast to the immediate energy demands of sprinting.