Power sports Flashcards
How is anaerobic energy yield calculated?
From oxygen uptake, 21 kJ of energy per litre of oxygen
Define anaerobic capacity?
The maximal amount of ATP that can be resynthesized by anaerobic metabolism.
How to measure anaerobic capacity?
- Invasive muscle biopsy techniques
- Magnetic Resonance spectroscopy
- MOAD
What is muscle biopsy?
A procedure that removes a small sample of tissue for testing.
3 types of muscle biopsy?
- Core needle biopsy
- Fine needle biopsy
- Image-guided biopsy
what is max accumulated oxygen deficit (MOAD)?
Currently the most accepted procedure for estimating anaerobic capacity
MOAD represents the difference between the predicted oxygen demand and the accumulated oxygen uptake measured during a supra maximal exhaustive test.
Methodology of MOAD?
- Establish VO2 and exercise intensity relationship
- Requires 10 minute duration to construct linear PO-VO2 relationship.
- Identify 120% of VO2Max
- Exercise at 120% of VO2Max to exhaustion
- MOAD= VO2(predicted) - VO2(actual)
Limitations of MOAD?
- Impractical
- Lack of agreement
- Data confounded by effects of economy and slow component
- Difficult to account for stored O2
- Difficult to regulate intensity in some ergometer tests
Define critical Power (PCrit)?
The highest exercise intensity that could be sustained for long periods without fatigue.
Where is PCrit found on the intensity domain graph
Upper boundary of the “heavy’ exercise intensity domain and the bottom boundary of the “severe” intensity domain.
How can you assess PCrit?
Using a maximal 3 minute effort of cycling against a fixed resistance
Typical values for MOAD?
- Before training (male)= 66.4
- After training (male)= 79.8
- Before training (female)= 69.8
- After training (female)= 80.9
