ACE Exercise Science & Application

Question 1

What is the primary function of the cardiovascular system during exercise?

Accepted Answer

Transport oxygen and nutrients

Answer

During exercise, muscles require a continuous supply of oxygen and nutrients (like glucose) to produce energy. The cardiovascular system, comprising the heart, blood vessels, and blood, efficiently circulates these vital substances to working muscles and removes metabolic waste products like carbon dioxide, ensuring sustained performance.

Question 2

Which muscle fiber type is best suited for endurance activities?

Accepted Answer

Type I fibers

Answer

Type I muscle fibers, also known as slow-twitch fibers, are highly efficient at using oxygen to generate ATP for continuous, extended muscle contractions. They are rich in mitochondria and capillaries, making them fatigue-resistant and ideally suited for prolonged, low-intensity endurance activities such as long-distance running or cycling.

Question 3

What is the primary energy system used during a 100-meter sprint?

Accepted Answer

Phosphagen system

Answer

The phosphagen system (or ATP-PC system) is the body's immediate energy system, providing ATP for very short, high-intensity activities. It utilizes stored ATP and creatine phosphate within the muscle cells to fuel maximal efforts lasting approximately 0-10 seconds, making it the primary system for a 100-meter sprint.

Question 4

Which plane of motion is involved in a lateral lunge?

Accepted Answer

Frontal plane

Answer

The frontal plane divides the body into anterior (front) and posterior (back) halves. Movements in this plane involve abduction and adduction, such as moving a limb away from or towards the midline of the body. A lateral lunge involves stepping out to the side, which is an abduction movement occurring within the frontal plane.

Question 5

What role does the nervous system play in exercise?

Accepted Answer

Control muscle activation and coordination

Answer

The nervous system acts as the body's command center, sending signals to muscles to initiate and control movement. It coordinates complex actions, regulates muscle force production, and integrates sensory information to ensure smooth and precise execution of exercises, making it fundamental for all physical activity.

(ACE) American Council on Exercise Certified Practice Test

(ACE) American Council on Exercise Certified Practice Test

ACE Exercise Science & Application