Jun '24 (edited) • Weekly training tips!
Is lactic acid the bad guy?
Part One: The Science of Lactic Acid
Understanding Lactic Acid and Lactate:
- Lactic acid is a byproduct of anaerobic metabolism.
- Produced during high-intensity exercise when oxygen supply is limited.
- Glucose is metabolized anaerobically, producing pyruvate, which converts to lactic acid.
- Lactic acid dissociates into lactate and hydrogen ions (H+).
- Muscle fatigue and soreness are caused by hydrogen ions, not lactate.
- Lactate serves as an energy source for muscles, the heart, and the brain.
The Lactate Threshold:
- Represents the exercise intensity where lactate accumulates faster than it can be cleared.
- Beyond this threshold, lactate levels rise sharply, causing muscle acidosis and fatigue.
- Expressed as a percentage of VO2 max.
- Key for endurance performance.
- Training increases the intensity at which lactate accumulation occurs, enhancing performance.
The Role of Lactic Acid in Energy Production:
- Lactate produced in muscles is transported to the liver.
- In the liver, lactate is converted back into glucose through gluconeogenesis.
- This glucose provides energy for other tissues or is stored as glycogen.
- The lactate shuttle mechanism recycles lactate efficiently.
- Highlights lactate's importance in maintaining energy balance and endurance during intense exercise.
Part Two: Lactic Acid and Athletic Performance
Impact of Lactic Acid on Performance:
- Rapid lactate and hydrogen ion accumulation during high-intensity exercise causes muscle acidosis, impairing contraction and reducing power.
- Muscle acidosis leads to the feeling of "burn" and may force athletes to reduce intensity or stop.
- Lactate can be used as a fuel source, helping sustain performance during prolonged exercise.
- Well-trained athletes can clear lactate efficiently, delaying fatigue and maintaining higher performance.
Training to Improve Lactate Threshold:
- Tempo Runs and Threshold Training: Perform sustained runs or cycling at or just below the lactate threshold to adapt to higher lactate levels and improve clearance efficiency.
- High-Intensity Interval Training (HIIT): Alternate between short bursts of high-intensity exercise and low-intensity recovery to enhance lactate adaptation and both aerobic and anaerobic capacity.
- for speed/power athletes this consist of intensive and extensive tempo running
- Long, Slow Distance (LSD) Training: Moderate-intensity long runs or rides improve lactate metabolism efficiency and overall endurance.
Nutrition and Recovery:
- Carbohydrates are essential for high-intensity exercise, maintaining glycogen stores, and preventing excessive lactate accumulation.
- Adequate hydration prevents dehydration, which can worsen acidosis effects.
- Post-exercise recovery strategies include active recovery, massage, and proper nutrition.
- Consuming carbohydrates and protein after exercise replenishes glycogen stores, repairs muscle tissue, and aids in lactate clearance.
Part Three: Practical Strategies for Athletes
Incorporating Lactate Threshold Training:
- Determine Your Lactate Threshold: Conduct a lactate threshold test or estimate the highest intensity you can sustain for 30-60 minutes.
- or you can just guess, run where your legs burn but feel you can hold it for a while
- Structured Workouts: Include tempo runs, interval sessions, and threshold training in your routine. Example: tempo runs at or just below threshold for 20-30 minutes, intervals at 95-100% threshold with equal recovery.
- Monitor Progress: Use heart rate monitors, power meters, or perceived exertion scales to track progress. Reassess your lactate threshold regularly to adjust training zones.
Balancing Training Load and Recovery:
- Periodization: Structure training into cycles of varying intensity and volume, with high-intensity periods followed by recovery weeks.
- Active Recovery: Incorporate easy jogging, cycling, or swimming to promote blood flow and lactate clearance without significant stress.
- Listen to Your Body: Watch for signs of overtraining (fatigue, decreased performance, soreness) and adjust training load and prioritize recovery as needed.
Nutrition and Hydration Strategies:
- Carbohydrate Intake: Consume adequate carbohydrates before, during, and after exercise to maintain glycogen stores and prevent lactate accumulation. Opt for complex carbs like whole grains, fruits, and vegetables.
- Hydration: Maintain proper hydration to support metabolic function and prevent dehydration-induced acidosis. Drink water regularly and use electrolyte-rich beverages during prolonged or intense exercise.
- Post-Exercise Nutrition: Consume a mix of carbohydrates and protein within 30-60 minutes after exercise for glycogen replenishment and muscle recovery. Options include chocolate milk, smoothies, and balanced meals with lean protein and complex carbs.
DM me with any questions you may have or sign up for a free 15’ coaching call here! https://stan.store/jasonrotger/p/60min-11-video-call--21fbv
4
1 comment
Is lactic acid the bad guy?
skool.com/stay-ready-perform-6683
This community helps athletes improve their TRAINING and PERFORMANCE with my science-based training principles.
Powered by