Aerobics Trainer Exercise Physiology & Conditioning Flashcards
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Read the first 7 Aerobics Trainer Exercise Physiology & Conditioning flashcards as text
Which hormonal response MOST directly mobilizes fatty acids from adipose tissue during prolonged aerobic exercise?
Answer: Glucagon and epinephrine
Glucagon and epinephrine activate hormone-sensitive lipase in adipocytes, triggering lipolysis and releasing free fatty acids into circulation.
An aerobics trainer notices a participant becomes dizzy immediately after stopping high-intensity choreography. The MOST likely cause is:
Answer: Venous pooling in the lower extremities
Abruptly stopping exercise allows blood to pool in dilated leg veins, transiently reducing venous return and causing orthostatic dizziness.
Which component of the FITT principle refers to how hard a participant exercises?
Answer: Intensity
Intensity in the FITT principle describes the effort level, often measured via target heart rate, RPE, or METs.
Cross-training in an aerobics program primarily helps by:
Answer: Reducing overuse injury risk while maintaining aerobic fitness
Cross-training distributes mechanical stress across different muscles and joints, lowering overuse injury risk while preserving and sometimes enhancing overall aerobic capacity.
What is the recommended minimum aerobic exercise frequency per week for general health benefits according to ACSM guidelines?
Answer: 3 days per week
ACSM recommends at least 3 days per week of moderate-intensity aerobic exercise to achieve meaningful cardiovascular health benefits.
Which physiological mechanism BEST explains the 'second wind' phenomenon during sustained aerobics?
Answer: The body's transition to more efficient fat oxidation and stabilized ventilation
Second wind occurs as ventilation stabilizes, oxygen delivery catches up to demand, and fat oxidation contributes more energy, reducing the sense of breathlessness.
In aerobics conditioning, periodization refers to:
Answer: Systematic variation of training volume and intensity over planned cycles
Periodization divides training into structured phases (macrocycle, mesocycle, microcycle) with varying load and intensity to optimize adaptation and prevent overtraining.