Lab 5 Flashcards
What 3 variables are being quantified during lab 5
Peak anaerobic power, mean anaerobic power, and fatigue index during a Wingate Test
What calculations are we making using Wingate data
Resistance setting, total work, peak anaerobic power, mean anaerobic power, and fatigue index
During power exercises, how much does energy expenditure rate increase
40 fold compared to rest
Whar are supramaximal power outputs
Outputs above VO2 max
What accounts for the major production of ATP during short-duration supramaximal activity
Immediate and nonoxidative glycolytic stores
Which energy storage has the highest maximal power
Creatine phosphate
What are factors impactine anaerobic performance
Energy depletion, metabolite accumulation (e.g. H+ and phosphates), and central and peripheral fatigue
What happens if phosphates accumulate in muscle without being used in ATP synthesis
Force production is inhibited
How can anaerobic fitness be improved
Repeatedly performing high power exercises, increasing type II fiber recruitment, increasing fatigue tolerance, improveing cardiovascular function, and increasing immediate and glycolytic energy stores
What are the 2 general methods to assess anaerobic power
1) Measure and compare changes in energy stores (ATP/PCr) to metabolites (lactate)
2) Measure amount of external work performed during short duration, high intensity exercise
Why is there no valid way to measure anaerobic fitness
Because some oxygen will always be used
What is peak power (derived from ATP/CP) with a wingate test
5 seconds with the highest power
What is mean power/supramaximal capacity (derived from glycolysis) with a wingate test
Total power over 30 seconds
What is the fatigue index with a wingate test
The decline in power over the course of the test
What is the equation for energy stores exhausted
Maximal capacity / maximal power
What is the load applied during a Wingate test
7.5% of the bodyweight
Would an athlete with a higher or lower fatigue index have a smaller decline in power throughout a Wingate test
Lower fatigue index
What are 3 reasons why power output might decline during a Wingate test if someone is fully motivated
Depleting immediate and non-oxidative glycolytic stores, metabolite accumulation, and central and peripheral fatigue
