Domains of exercise Flashcards
critical power
highest power output that can be maintained over time
W prime
power above CP x time (above cp)
W’
fixed energy store that mainly represents anaerobic capacity
glycolysis
stores deplete = doesn’t last long
what is at a steady state at critical power
vo2
blood lactate
hr
fatigue products
how is power generated up to CP
aerobically
Athlete A can maintain a power output of 600 W for 30 s, and her CP has been estimated at 300 W.
Athlete B can maintain a power output of 500 W for 45 s, and her CP has been estimated at 280 W. Who’s W’ is larger?
B
a = 9000 J (200x30)
b = 9900 J (220x45)
Athlete A can maintain a power output of 600 W for 30 s, and the CP has been estimated at 300 W. How long can they maintain 400 W?
W’ = 300 x30 = 9000 J
9000 J /100 W = 90s
practical application of CP
who’s fittest
power training zones
tracking a training cycle
oxygen uptake kinetics - phase I
cardio dynamic component
20s
transit time of blood between exercising muscle and lungs
oxygen uptake kinetics - phase II
primary component
2-3mins
pulmonary vo2 rises in mono exponential way to meet muscle o2 demand
oxygen uptake kinetics - phase III
slow component
more than 3mins
slow rise in vo2
at higher power as more fast motor units recruited
not as efficient so more o2 needed per unit of force
moderate exercise below lactate threshold (LT1)
mono exponential increase on vo2
no phase III
heavy exercise between LT1 and CP
mono exponential increase in vo2
slow component
server exercise above CP
slow component never stabalises and continues until terminated
practical implications
steady state exercise above lactate threshold you need to keep monitoring o2 uptake in Douglas bag
