Aerobics Trainer Exercise Physiology & Conditioning Flashcards
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Read the first 7 Aerobics Trainer Exercise Physiology & Conditioning flashcards as text
A client's resting blood pressure reads 145/95 mmHg on two separate visits. How should the aerobics trainer respond?
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.
Which breathing technique is recommended during aerobic group exercise to optimize oxygen exchange?
Answer: Natural rhythmic breathing matched to movement
Natural rhythmic breathing synchronized with movement maintains adequate ventilation and prevents dangerous intra-thoracic pressure spikes.
The 'overload principle' in exercise programming means:
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.
During steady-state aerobic exercise, ventilation rises primarily because of increased:
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.
Which ACSM target heart rate method uses a percentage of heart rate reserve (HRR)?
Answer: Karvonen formula
The Karvonen formula calculates target HR as (HRmax – HRrest) × intensity% + HRrest, incorporating resting heart rate into the prescription.
Excess post-exercise oxygen consumption (EPOC) is largely responsible for:
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.
What does 'specificity of training' mean in an aerobics context?
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.