Fitness Lessons Health And Fitness 3

Question 1

What is the recommended minimum duration of moderate-intensity aerobic activity per week for adults according to US health guidelines?

Accepted Answer

150 minutes

Answer

The CDC and DHHS recommend at least 150 minutes of moderate-intensity aerobic activity weekly for significant health benefits.

Question 2

Which body composition measurement estimates the percentage of mass that is NOT fat?

Accepted Answer

Lean body mass

Answer

Lean body mass includes muscle, bone, water, and organs — everything except stored fat.

Question 3

Delayed onset muscle soreness (DOMS) typically peaks how many hours after exercise?

Accepted Answer

24–72 hours

Answer

DOMS is caused by microscopic muscle damage and inflammation, peaking between 24 and 72 hours post-exercise.

Question 4

Which of the following best describes the principle of specificity in exercise training?

Accepted Answer

Training improves only the exact muscles and systems stressed

Answer

The specificity principle states that adaptations are specific to the type, intensity, and muscles used in training.

Question 5

What does a metabolic equivalent (MET) value measure?

Accepted Answer

Oxygen consumed relative to rest

Answer

One MET equals the oxygen consumed at rest; higher MET values indicate proportionally greater energy expenditure during activity.

Fitness Lessons Practice Test