ACSM Exercise Science 3

Question 1

What is the primary limiting factor for VO2max in highly trained endurance athletes?

Accepted Answer

Maximal cardiac output

Answer

In elite endurance athletes, maximal cardiac output (heart rate × stroke volume) is the primary central limiting factor for VO2max.

Question 2

During resistance training, which principle states that muscles must be progressively loaded beyond habitual levels to stimulate adaptation?

Accepted Answer

Overload principle

Answer

The overload principle states that training stimuli must exceed the current capacity of the body to drive physiological adaptations.

Question 3

At what blood lactate concentration is the lactate threshold (LT1) typically defined?

Accepted Answer

2 mmol/L

Answer

The first lactate threshold (LT1) is commonly identified at approximately 2 mmol/L, representing the onset of blood lactate accumulation above baseline.

Question 4

Which neuromuscular mechanism explains the initial strength gains in untrained individuals during the first weeks of resistance training?

Accepted Answer

Neural adaptations and motor unit recruitment

Answer

Early strength gains in novice trainees are primarily attributed to neural adaptations including improved motor unit recruitment, firing rate, and synchronization.

Question 5

What is the approximate MET value for moderate-intensity walking at 3.5 mph on a level surface?

Accepted Answer

3.5 METs

Answer

Walking at 3.5 mph on a level surface is approximately 3.5 METs, classified as moderate-intensity activity (3–5.9 METs).

ACSM Practice Test

ACSM Practice Test

ACSM Exercise Science 3