Fatigue

Question 1

DEFINE MUSCULAR FATIGUE

Answer 1

• Inability to maintain power output
• During repeated muscular contraction

Question 2

What are the 4 FACTORS that contribute to MUSCULAR FATIGUE?

Answer 2

• Build up of Lactic Acid
• Dehydration
• Depletion of PC stores
• Depletion of Glycogen stores
• Decreased Ca2+

Question 3

Describe how a BUILD UP of LACTIC ACID affects FATIGUE

Answer 3

Inhibits Enzyme Activity such as ATPase during Hydrolysis of ATP

Question 4

Describe how DEHYDRATION affects FATIGUE

Answer 4

• Decrease in blood volume, sweat rate and heat dissipation
• Increase in viscosity so less O2
• Cardiac Output decreased