Central and Peripheral Fatigue Pacing

Question 1

Define central fatigue

Answer 1

a failure of the central nervous system to adequately drive the muscle

Question 2

Define peripheral fatigue

Answer 2

an impairment located in the muscle characterised by a metabolic end point

Question 3

Central fatigue mechanisms

Answer 3

disturbances in brain neurontransmitters.
depletion of brain glycogen.
Increases in core and brain temperature.
Increased serotonin
Decreased dopamine.

Question 4

Peripheral faituge mechanisms

Answer 4

depletion of substrates
or the accumulation of metabolites
feedback from fatigue sensitive muscle afferents.

Question 5

Do we have a critical/ limit threshold?

Answer 5

Critical limit is present and there is a crucial role of the combination of central and peripheral fatigue feedback to regulate exercise intensity.

Question 6

Define pacing

Answer 6

A pacing strategy is defined as the distribution of work rate throughout an exercise bout and largely influences the success or failure of the performance.

Question 7

When is pacing used?

Answer 7

Endurance exercise or exercise that predominantly requires the oxidative systems for energy.