Ace Group Fitness Test Exercise Science Fundamentals 3

Question 1

Which principle of exercise science states that adaptations are specific to the type of training performed?

Accepted Answer

SAID principle

Answer

SAID (Specific Adaptation to Imposed Demands) states that the body adapts specifically to the stress placed upon it.

Question 2

What is the approximate MET value at rest (resting metabolic rate)?

Accepted Answer

1 MET

Answer

By definition, 1 MET equals the resting metabolic rate, approximately 3.5 mL O₂/kg/min.

Question 3

Which structure in the cell is primarily responsible for aerobic ATP production?

Accepted Answer

Mitochondria

Answer

Mitochondria contain the enzymes of the Krebs cycle and electron transport chain, making them the site of aerobic energy production.

Question 4

A group fitness instructor notices a participant's heart rate is 150 bpm and their estimated max HR is 190 bpm. What is their approximate %HRmax?

Accepted Answer

79%

Answer

% HRmax = (150 ÷ 190) × 100 ≈ 79%, placing this participant in a moderate-to-vigorous intensity zone.

Question 5

Which of the following BEST describes the role of the Golgi tendon organ (GTO)?

Accepted Answer

Inhibits muscle contraction when tension becomes excessive

Answer

The GTO is a proprioceptor that senses excessive muscle tension and triggers autogenic inhibition to protect the muscle and tendon from injury.

Ace Group Fitness Test Practice Test