Revision Unit 3 AOS 2

Aerobic power is the

• rate of anaerobic energy production

• total amount of energy produced in the absence of oxygen

• total amount of energy produced in the presence of oxygen

• maximum rate of energy produced in the presence of oxygen

An improvement in the lactate inflection point (LIP) of an endurance athlete can be attributed to

• insufficient oxygen supply

• an increase in lactate tolerance

• lactate production exceeding lactate removal

• an increase in the ability of the muscle fibers to oxidise fats and carbohydrates

What causes the accumulation of blood lactate during exercise?

• lactate production exceeding lactate removal

• the anaerobic energy systems becoming dominant

• insufficient oxygen being delivered to the working muscles

• a decrease in the athlete's ability to tolerate the accumulated lactate

The energy system with the highest yield of ATP but the slowest rate is the

• ATP-PC

• aerobic system

• anaerobic system

• anaerobic glycolysis system

During the period indicated by the number 2, oxygen demand is being met by oxygen supply. Which energy system(s) supplies most of the energy for exercise during this period

• ATP-PC system

• aerobic system

• anaerobic systems

• anaerobic glycolysis

Which energy system is predominant in the 6x30m sprint test?

• ATP-PC system

• anaerobic system

• aerobic sysytem

What is the likely cause of fatigue in the 6x30m sprint test?

• accumulation of by products

• fuel depletion (PC)

• lactate acid build up

What type of recovery would be most beneficial between each of the sprints in the 6x30m sprint text?

• passive recovery

• active recovery

• rest recovery

At the completion of the eight repetitions of the seven-second sprints the athletes performed active recovery

Why is active recovery beneficial for athletes?

• keeps heart rate elevated to promote blood flow

• replenishes oxygen levels to myoglobin

• increases oxygen to help break down metabolic by-products

• all of the above

What is a positive physiological consequence for passive cool down?

• PC is resynthesised at a faster rate

• quick removal of metabolic by products

• assists in thermoregulation