Week 10 - Recovery

Question 1

What are the underlying mechanisms that mediate post-exercise recovery?

Answer 1

Skeletal muscle damage

Decreased substrates

Accumulation of Metabolic by-products

Question 2

UNDERLYING MECHANISMS THAT MEDIATE POST-EXERCISE RECOVERY

Explain skeletal muscle damage

Answer 2

Can include damage to sarcolemma, contractile proteins + connective tissue.

Question 3

UNDERLYING MECHANISMS THAT MEDIATE POST-EXERCISE RECOVERY

Skeletal muscle damage

What can the damage to sarcolemma, contractile proteins + connective tissue result in?

Answer 3

⬇️ capacity to generate peak muscle forces.

The damage impairs the ability to transport blood glucose into skeletal muscle cell. == ⬇️ capacity to replenish glycogen stores.

Damage also leads to soreness + pain

Question 4

UNDERLYING MECHANISMS THAT MEDIATE POST-EXERCISE RECOVERY

Explain decreased substrates

Answer 4

PCr conc is limited + depleted w/in 10secs of high-intensity exercise.

– NEEDS to be recovered.

As do glycogen stores.

Otherwise a high level of perf will be compromised

Question 5

UNDERLYING MECHANISMS THAT MEDIATE POST-EXERCISE RECOVERY

Explain accumulation of metabolic by-products

Answer 5

ATP turnover rates are elevated during high-intensity exercise.

⬆️ glycolytic flux + ATP hydrolysis contributes to an accumulation of lactate + protons w/in the cells.

– both can impair ATP resynthesis + skeletal muscle contraction.

Question 6

What can cellular acidosis do?

Answer 6

Impair recovery of PCr stores

Question 7

What chronic training adaptations improve post-exercise recovery?

Answer 7

⬆️ VO2 Max

⬆️ buffering capacity

⬆️ monocarboxylate transporters