NFPT - National Federation of Professional Trainers Exercise Physiology and Metabolism Questions and Answers

Question 1

A client performs a set of heavy barbell squats for 5 repetitions, lasting approximately 15-20 seconds. Which energy system is predominantly being used to supply ATP for this activity?

Accepted Answer

ATP-PC (Phosphagen) system

Answer

Oxidative system

Answer

Glycolytic system

Answer

Aerobic system

Question 2

During a 45-minute steady-state run at a moderate intensity (65% VO2 max), what is the primary fuel source the body will utilize for energy?

Accepted Answer

Fatty acids

Answer

Muscle glycogen

Answer

Amino acids

Answer

Creatine phosphate

Question 3

A client new to resistance training completes a challenging workout. For the next 24-38 hours, they experience a slight elevation in their resting metabolic rate. This phenomenon is best described as:

Accepted Answer

Excess Post-exercise Oxygen Consumption (EPOC)

Answer

Metabolic Conditioning

Answer

Lactate Threshold

Answer

Steady State

Question 4

Which of the following metabolic adaptations is most associated with consistent, high-intensity interval training (HIIT)?

Accepted Answer

Increased tolerance to lactate accumulation

Answer

Decreased mitochondrial density

Answer

A lower resting heart rate primarily due to decreased stroke volume

Answer

Primary reliance on fat oxidation during work intervals

Question 5

A client performs a 400-meter sprint which takes them approximately 60 seconds to complete. The primary byproduct of the dominant energy system used during this event, which is associated with muscle fatigue, is:

Accepted Answer

Lactic acid

Answer

Carbon dioxide

Answer

Creatine

Answer

Water

Question 6

Which acute hormonal response is typically observed immediately following a high-intensity resistance training session?

Accepted Answer

An increase in circulating testosterone and growth hormone

Answer

A significant decrease in cortisol

Answer

A sharp decline in growth hormone

Answer

A sustained increase in insulin