W6: Anaerobic Training

Question 1

muscle recruitment as intensity increases

Answer 1

Question 2

slide 27

Question 3

Anaerobic Training
● Maximal knee extension training 4 days/week for 7 weeks
○ One leg, 6 second maximal contractions x10 for stressing ATP-PCr
○ Other leg, 30 second maximal contractions x2 for stressing Glycolytic System
● ∴ performance gains with spring training

Answer 3

Anaerobic training leads to significant increases in key enzymes of the ATP-PCr and glycolytic pathways, enhancing muscle power and endurance. Both short-duration, high-intensity (6s) and moderate-duration, high-intensity (30s) training result in performance gains, supported by metabolic adaptations in the muscles.

Question 4

Anaerobic Substrates
● quantity of resting anaerobic substrates increases
● E.g., ATP, PCr, creatine, glycogen

Answer 4

Overall Increases: The significant increases in PCr, ATP, and glycogen concentrations indicate that heavy-resistance training enhances the muscle’s anaerobic energy stores.

Functional Impact: These adaptations improve the muscle’s ability to perform high-intensity, short-duration activities by providing more immediate energy and supporting prolonged anaerobic efforts.

Reduced Creatine: The decrease in free creatine levels, despite the increase in PCr, suggests a shift towards more efficient energy utilization and storage within the muscles.