MES Exercise Physiology & Fitness Testing

Question 1

Which variable is measured by a VO₂max test to determine cardiorespiratory fitness?

Accepted Answer

Maximum oxygen consumption during progressive exercise

Answer

VO₂max is the maximum rate of oxygen uptake during incremental exercise, representing the ceiling of the aerobic energy system.

Question 2

The Fick equation defines VO₂ as the product of cardiac output and which other variable?

Accepted Answer

Arteriovenous oxygen difference (a-vO₂ diff)

Answer

The Fick equation states VO₂ = cardiac output × a-vO₂ difference, reflecting both oxygen delivery and muscle oxygen extraction.

Question 3

Which submaximal field test estimates VO₂max using the relationship between heart rate and workload?

Accepted Answer

YMCA Cycle Ergometer Test

Answer

The YMCA Cycle Ergometer Test uses submaximal heart rate responses at multiple workloads to extrapolate estimated VO₂max.

Question 4

At what blood lactate concentration is the lactate threshold (LT1) generally identified?

Accepted Answer

2 mmol/L

Answer

LT1 is conventionally identified at approximately 2 mmol/L of blood lactate, marking the onset of sustained lactate accumulation.

Question 5

Which metabolic adaptation primarily accounts for the reduction in resting heart rate seen after months of aerobic training?

Accepted Answer

Increased stroke volume due to cardiac hypertrophy

Answer

Eccentric cardiac hypertrophy increases stroke volume, allowing the heart to maintain cardiac output at a lower rate at rest.

MES - ACE Medical Exercise Specialist Practice Test