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Repeat Sprint Ability (RSA)
-the capacity to sustain performance during…
Repeat Sprint Ability (RSA)
-the capacity to sustain performance during repeated high-intensity efforts with minimal decline.
Energy Systems
-Provide the sustained performance of repeated sprints by providing energy through aerobic and anaerobic processes.
Aerobic System
-Uses oxygen to generate ATP during prolonged, lower-intensity activity
facilitates
PCr resynthesis, lactate recycling, H+ clearance, and system reset.
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Glycolytic System
- Breaks down glucose w/ or w/o oxygen to produce ATP for short-duration, high-intensity activity.
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Training Strategies
- develop the capacity to sustain high-intensity efforts throguh tailored intervals nad recovery protocols.
Threshold
- Improves buffering capacity and endurance by training at or near lactate threshold.
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Endurance
- Emphasizes lower-intensity and more continuous efforts to improve aerobic capacity and recovery between sprints.
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improves
aerobic base, VO2 kinetics, and PCr recovery
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Capacity
- Emphasizes high-intensity efforts sustsained w/o complete recovery.
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training improves
acidosis tolerance, neuromuscular efficiency under stress, and buffering capacity
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Key Physiological Factors
- enhances fatigue resistance and recovery by buffering H+ ions and improving mitochondrial efficiency
PCr Resynthesis
- Process when phosphocreatine is restored in muscles during recovery
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H+ Ion and Inorganic Posphate Clearance
- The body's ability reduce fatigue by neutralizing hydrogen ions (H+) produced during anaerobic metabolism.
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supports
proper muscle contractions by stabilizing pH, (avoiding muscle acidosis)
VO2 Kinetics
- In aerobic recovery; rate which oxygen uptake responds to exercise intensity.
training goals
less fatigue, faster recovery, improved RSA
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