PTC Exercise Physiology and Anatomy 3

Question 1

Which hormone is known as the 'stress hormone' and is released in response to intense exercise?

Accepted Answer

Cortisol

Answer

Cortisol, secreted by the adrenal cortex, is elevated during intense or prolonged exercise and acts to mobilize energy substrates, though chronically elevated levels can impair recovery.

Question 2

What is the normal resting heart rate range for a healthy adult?

Accepted Answer

60–100 bpm

Answer

A normal resting heart rate for a healthy adult is 60–100 beats per minute, with well-trained athletes often measuring below 60 bpm.

Question 3

The point at which lactate production exceeds the body's ability to clear it is called the:

Accepted Answer

Lactate threshold

Answer

The lactate threshold is the exercise intensity at which blood lactate accumulates faster than it can be cleared, marking the transition from primarily aerobic to anaerobic energy production.

Question 4

Which plane of motion divides the body into upper and lower halves?

Accepted Answer

Transverse plane

Answer

The transverse (horizontal) plane divides the body into superior and inferior (upper and lower) halves, and movements in this plane involve rotation.

Question 5

What is hypertrophy in the context of resistance training?

Accepted Answer

Increase in the cross-sectional area of muscle fibers

Answer

Hypertrophy refers to the increase in the size (cross-sectional area) of muscle fibers as an adaptation to progressive resistance training overload.

PTC - Personal Trainer Certificate Practice Test

PTC - Personal Trainer Certificate Practice Test

PTC Exercise Physiology and Anatomy 3