CSCS Periodization & Energy Systems 3

Question 1

What is the primary fuel substrate used during low-intensity, prolonged aerobic exercise (>60 minutes)?

Accepted Answer

Free fatty acids and intramuscular triglycerides

Answer

During prolonged low-intensity exercise, the oxidative system increasingly relies on free fatty acids and intramuscular triglycerides as glycogen is spared.

Question 2

In a traditional linear periodization model, which phase typically follows the hypertrophy phase?

Accepted Answer

Basic strength phase

Answer

Linear periodization progresses from hypertrophy → basic strength → strength/power → peaking, building on each preceding phase.

Question 3

Which enzyme is responsible for the rate-limiting step in glycolysis?

Accepted Answer

Phosphofructokinase (PFK)

Answer

Phosphofructokinase (PFK) catalyzes the key regulatory step in glycolysis and is highly sensitive to AMP, ADP, and pH changes.

Question 4

An athlete competing in multiple sports seasons per year would benefit most from which periodization approach?

Accepted Answer

Multi-peak periodization

Answer

Multi-peak (or multiple-peak) periodization structures training to produce several performance peaks across a competitive year for athletes with multiple seasons.

Question 5

The Krebs cycle (citric acid cycle) takes place in which cellular compartment?

Accepted Answer

Mitochondrial matrix

Answer

The Krebs cycle occurs in the mitochondrial matrix, where acetyl-CoA is oxidized to produce NADH, FADH2, and CO2.

(CSCS) Certified Strength & Conditioning Specialist Practice Test

(CSCS) Certified Strength & Conditioning Specialist Practice Test

CSCS Periodization & Energy Systems 3