NCSF Sport Nutrition Specialist Certification (SNS) Practice Test 2025 – The All-in-One Resource to Master Your Certification!

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What is a primary function of arginine in the body?

Regulates blood pressure

Arginine plays an important role in regulating blood pressure, primarily through its involvement in the production of nitric oxide. Nitric oxide is a vasodilator, meaning it helps relax and widen blood vessels, which in turn can lead to lower blood pressure and improved blood flow. This function is crucial for overall cardiovascular health and can influence exercise performance by improving oxygen delivery to working muscles.

While arginine does have other functions in the body, such as supporting muscle repair and enhancing energy production through contributing to protein metabolism and possibly influencing ATP production, its most notable and widely recognized role is in vascular health and blood pressure regulation. The other functions listed are valuable but do not define arginine's primary role in the same way as its impact on blood pressure does.

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Supports muscle repair

Aids in nutrient absorption

Enhances energy production

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