ACE Personal Trainer MCQ 2 — Questions and Answers
Question 1: Which energy system predominantly fuels a 400-meter sprint?
- ATP-PC system
- Glycolytic system (Correct answer)
- Oxidative system
- Creatine phosphate only
Correct answer: Glycolytic system
The glycolytic (anaerobic lactic) system primarily fuels efforts lasting 30 seconds to 2 minutes, such as a 400-meter sprint.
Question 2: A client's resting heart rate is 58 bpm. Using the Karvonen formula with a target intensity of 70%, what additional value is needed?
- Body weight
- VO2 max
- Heart rate reserve (Correct answer)
- Blood pressure
Correct answer: Heart rate reserve
The Karvonen formula requires heart rate reserve (HRmax − resting HR) to calculate target training heart rate.
Question 3: Which muscle action occurs when the biceps brachii controls elbow extension during a slow lowering phase?
- Concentric
- Isometric
- Eccentric (Correct answer)
- Isokinetic
Correct answer: Eccentric
Eccentric contractions occur when a muscle lengthens under tension, as the biceps does while controlling elbow extension.
Question 4: Which of the following is the primary function of the rectus abdominis?
- Spinal rotation
- Hip flexion
- Trunk flexion (Correct answer)
- Lateral trunk flexion
Correct answer: Trunk flexion
The rectus abdominis primarily flexes the trunk by approximating the ribcage toward the pelvis.
Question 5: When a client experiences sharp pain during an exercise, the trainer's FIRST response should be to:
- Reduce the weight and continue
- Stop the exercise immediately (Correct answer)
- Switch to a different muscle group
- Apply ice and continue
Correct answer: Stop the exercise immediately
Sharp pain is a red flag that warrants immediate cessation of exercise to prevent injury.
Question 6: Which principle explains why a deconditioned client experiences rapid strength gains in the first few weeks of training?
- Muscle hypertrophy
- Neural adaptations (Correct answer)
- Increased bone density
- Hormonal changes
Correct answer: Neural adaptations
Early strength gains in beginners are primarily due to neural adaptations, including improved motor unit recruitment and coordination.
Question 7: Which macronutrient provides 4 kcal per gram and is the body's preferred fuel source during moderate-to-high intensity exercise?
- Fat
- Protein
- Carbohydrate (Correct answer)
- Alcohol
Correct answer: Carbohydrate
Carbohydrates provide 4 kcal/gram and are the preferred substrate during moderate-to-high intensity exercise due to their efficient conversion to ATP.
ACE Personal Trainer MCQ 2
Which energy system predominantly fuels a 400-meter sprint?