Mental fatigue and the impact of sport performance

Question 1

what is the homeostasis failure limitations model

Answer 1

• fatigue results from failure to maintain homeostasis in the muscles or the CNS

Question 2

what is the central governor model

Answer 2

the brain a central governor that decides a decision based on the feedback from the periphery as to how hard we can work.

Question 3

what is the psychobiological model

Answer 3

• When reward is greater than cost/effort = persistence
• If the cost is perceived as greater than the reward = stop
• therefore fatigue is a response to a high perception of effort

Question 4

the serotonin hypothesis of fatigue

Answer 4

• Increase in brain serotonergic activity during prolonged activity causes lethargy, reduced motor unit recruitment and a loss of drive

Question 5

the strength control model of fatigue

Answer 5

• the more self-control is exerted on a muscle, the more fatigued it becomes and self-control resources run out, therefore impacting other events that require self-control (eg. binge eating)

Question 6

impact of mental fatigue on endurance performance, resistance training and skill based performance

Answer 6

• is significantly impaired

Question 7

4 ways to avoid mental fatigue

Answer 7

avoidance - sleep, less phone
stimulation- caffeine
performance feedback
mental durability training

Question 8

summary from our practical

Answer 8

• the cognitive task increased mental fatigue
• throwing accuracy impaired by mental fatigue
• mental fatigue reduced reps of burpees
• mental fatigue affected psychomotor performance and exercise endurance performance