CAT Aerobics Trainer Exercise Physiology & Conditioning 3 — Questions and Answers
Question 1: A client's resting blood pressure reads 145/95 mmHg on two separate visits. How should the aerobics trainer respond?
- Begin high-intensity interval training immediately
- Refer the client to a physician before starting or progressing exercise (Correct answer)
- Advise the client to stop all physical activity
- Only allow the client to perform stretching exercises indefinitely
Correct answer: Refer the client to a physician before starting or progressing exercise
Resting BP ≥ 140/90 mmHg meets the threshold for Stage 1 hypertension, requiring medical clearance before advancing exercise intensity.
Question 2: Which breathing technique is recommended during aerobic group exercise to optimize oxygen exchange?
- Valsalva maneuver
- Pursed-lip breathing
- Natural rhythmic breathing matched to movement (Correct answer)
- Breath holding during peak effort
Correct answer: Natural rhythmic breathing matched to movement
Natural rhythmic breathing synchronized with movement maintains adequate ventilation and prevents dangerous intra-thoracic pressure spikes.
Question 3: The 'overload principle' in exercise programming means:
- Always exercising at maximum intensity
- Applying a stress above the body's current capacity to stimulate adaptation (Correct answer)
- Performing the same workout every session
- Prioritizing strength over cardiovascular fitness
Correct answer: Applying a stress above the body's current capacity to stimulate adaptation
Overload requires the exercise stimulus to exceed normal demands, prompting physiological adaptations such as improved aerobic capacity.
Question 4: During steady-state aerobic exercise, ventilation rises primarily because of increased:
- Plasma pH and CO2 levels (Correct answer)
- Serum sodium concentration
- Blood glucose levels
- Epinephrine and norepinephrine release only
Correct answer: Plasma pH and CO2 levels
Rising CO2 and falling blood pH (due to lactic acid accumulation) stimulate chemoreceptors, driving increased ventilation during aerobic work.
Question 5: Which ACSM target heart rate method uses a percentage of heart rate reserve (HRR)?
- Borg RPE method
- Karvonen formula (Correct answer)
- Talk test protocol
- VO2max percentage method
Correct answer: Karvonen formula
The Karvonen formula calculates target HR as (HRmax – HRrest) × intensity% + HRrest, incorporating resting heart rate into the prescription.
Question 6: Excess post-exercise oxygen consumption (EPOC) is largely responsible for:
- Decreased muscle soreness after training
- Elevated caloric burn that continues after exercise ends (Correct answer)
- Reduced lactic acid production during exercise
- Lower heart rate during cool-down
Correct answer: Elevated caloric burn that continues after exercise ends
EPOC reflects the elevated oxygen uptake needed to restore metabolic homeostasis, resulting in continued calorie burning after the workout.
Question 7: What does 'specificity of training' mean in an aerobics context?
- All exercise types produce identical adaptations
- Adaptations are specific to the muscles, energy systems, and movement patterns trained (Correct answer)
- High-intensity training is always superior to moderate-intensity
- The body adapts only when diet is also optimized
Correct answer: Adaptations are specific to the muscles, energy systems, and movement patterns trained
Specificity means the body adapts precisely to the type, intensity, and muscles stressed—aerobic training improves aerobic capacity most in trained muscle groups.
CAT Aerobics Trainer Exercise Physiology & Conditioning 3
A client's resting blood pressure reads 145/95 mmHg on two separate visits.
How should the aerobics trainer respond?