BHK Exercise Physiology

Question 1

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

Accepted Answer

ATP-PCr system

Answer

Oxidative phosphorylation

Answer

Glycolytic system

Answer

Beta-oxidation

Question 2

Which term describes the maximum amount of oxygen the body can utilize during intense exercise?

Accepted Answer

VO2 max

Answer

Anaerobic threshold

Answer

Respiratory exchange ratio

Answer

Oxygen debt

Question 3

What happens to stroke volume during progressive aerobic exercise in a trained individual?

Accepted Answer

It increases then plateaus near maximal intensity

Answer

It decreases steadily

Answer

It remains constant throughout

Answer

It increases linearly with no plateau

Question 4

Which muscle fiber type is most resistant to fatigue and relies predominantly on oxidative metabolism?

Accepted Answer

Type I

Answer

Type IIx

Answer

Type IIa

Answer

Type IIb

Question 5

The lactate threshold is best described as the exercise intensity at which:

Accepted Answer

Blood lactate begins to accumulate faster than it is cleared

Answer

Muscle glycogen is completely depleted

Answer

Oxygen consumption reaches its maximum

Answer

Fat oxidation exceeds carbohydrate oxidation

Question 6

Which hormone is primarily responsible for increasing blood glucose during exercise by stimulating glycogenolysis in the liver?

Accepted Answer

Glucagon

Answer

Insulin

Answer

Cortisol

Answer

Aldosterone