NCSF-CPT Exercise Science & Anatomy 1 — Questions and Answers
Question 1: Which muscle is the primary mover during a barbell squat?
- Gluteus maximus (Correct answer)
- Rectus femoris
- Biceps femoris
- Gastrocnemius
Correct answer: Gluteus maximus
The gluteus maximus is the primary mover in the squat due to its role in hip extension.
Question 2: What energy system is predominantly used during a 100-meter sprint?
- Aerobic glycolysis
- ATP-PCr system (Correct answer)
- Oxidative phosphorylation
- Beta-oxidation
Correct answer: ATP-PCr system
The ATP-PCr (phosphocreatine) system dominates during short, maximal-intensity efforts lasting under 10 seconds.
Question 3: Which plane of motion divides the body into anterior and posterior halves?
- Sagittal plane
- Transverse plane
- Frontal plane (Correct answer)
- Diagonal plane
Correct answer: Frontal plane
The frontal (coronal) plane divides the body into front (anterior) and back (posterior) sections.
Question 4: What term describes the ability of a muscle to exert maximum force in a single contraction?
- Muscular endurance
- Muscular power
- Muscular strength (Correct answer)
- Muscular hypertrophy
Correct answer: Muscular strength
Muscular strength is the maximum amount of force a muscle or muscle group can generate in a single maximal effort.
Question 5: Which type of muscle fiber has the highest oxidative capacity and is most fatigue resistant?
- Type IIb
- Type IIa
- Type IIx
- Type I (Correct answer)
Correct answer: Type I
Type I (slow-twitch) fibers have the highest mitochondrial density and oxidative capacity, making them highly fatigue resistant.
Question 6: What is the agonist muscle during a bicep curl?
- Triceps brachii
- Brachioradialis
- Biceps brachii (Correct answer)
- Deltoid
Correct answer: Biceps brachii
The biceps brachii is the primary agonist (prime mover) responsible for elbow flexion during a bicep curl.
NCSF-CPT Exercise Science & Anatomy 1
Which muscle is the primary mover during a barbell squat?