Fitness Lessons Exercise Physiology Basics 3

Question 1

What does the term 'progressive overload' mean in fitness?

Accepted Answer

Gradually increasing exercise demands to continue making gains

Answer

Performing the same workout indefinitely

Answer

Reducing intensity over time

Answer

Resting more between sessions

Question 2

Which physiological event triggers muscle contraction?

Accepted Answer

Release of calcium ions from the sarcoplasmic reticulum

Answer

Release of potassium from the cell membrane

Answer

Increase in blood glucose

Answer

Decrease in ATP levels

Question 3

What is the Karvonen formula used for?

Accepted Answer

Calculating target heart rate zones using heart rate reserve

Answer

Measuring VO2 max

Answer

Estimating body fat percentage

Answer

Determining one-rep max

Question 4

What is muscle atrophy?

Accepted Answer

Loss of muscle mass due to disuse or lack of stimulation

Answer

Increase in muscle fiber size

Answer

Muscle soreness after training

Answer

Increased muscle endurance

Question 5

Which of the following best describes 'specificity' as a training principle?

Accepted Answer

The body adapts specifically to the type of stress placed upon it

Answer

All exercise produces identical results

Answer

Rest is more important than training

Answer

High intensity is always superior

Question 6

What is cardiac output?

Accepted Answer

The volume of blood pumped by the heart per minute

Answer

The rate of oxygen absorption by muscles

Answer

The volume of air inhaled per breath

Answer

The heart's electrical activity