1 / 32

Middle Distance 1500 Meters

Middle Distance 1500 Meters. Physiological Development in Endurance Events. Aerobic Anaerobic Strength Biomechanical Critical Zone. Energy Demands in Racing. Specific Event Demand During Racing Aerobic Demand (Vo2 Max) Anaerobic Demand (Neuromuscular) Combined Zone

michaeldickerson
Download Presentation

Middle Distance 1500 Meters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Middle Distance1500 Meters

  2. Physiological Development inEndurance Events • Aerobic • Anaerobic • Strength • Biomechanical • Critical Zone

  3. Energy Demands in Racing • Specific Event Demand During Racing • Aerobic Demand (Vo2 Max) • Anaerobic Demand (Neuromuscular) • Combined Zone • Race Specific Aerobic Energy • Race Specific Anaerobic Energy • 50-75% Fluctuation • Critical Zone • Anaerobic Reserve • 25-50%

  4. Aerobic/Anaerobic Contributions

  5. Energy Source Comparisons for Middle Distanceand Distance Events “Classic” Model Energy Source 400 800 1500 5000 10000 Mar Aerobic (%) 18.5 35.0 52.5 80.0 90.0 97.5 Anaerobic (%) 81.5 65.0 47.5 20.0 10.0 2.5 “Current” Model Energy Source 400 800 1500 5000 10000 Mar Aerobic (%) 43.5 60.5 77.0 94.0 97.0 99.0 Anaerobic (%) 56.5 39.5 23.0 6.0 3.0 1.0 *The “current” model was determined using the latest methodology in oxygen kinetics, and with a much more elite subject population than the “classic” model.

  6. Energy Distribution at 1500 Meters

  7. Sports Science Testing to Determine Individual Athletes’ Profiles: • Max VO2 • vVO2 • Max Lactate • Lactate Threshold • Aerobic Threshold • Fractional Utilization of LT & AT based on vV02

  8. % of Vo2 Max

  9. Aerobic: Aerobic Power • Development of Cardiovascular System • Cardiac Output • VO2 Max

  10. Cardiac Output Heart Rate X Stroke Volume = Cardiac Output Stroke Volume plateaus @ 60-65% of Vo2 Max. Improvement in stroke volume and/or heart rate improves cardiac output. Endurance running training improves output as much as 2.5 times. 14-16 L.min (untrained) 20-40 L.min (trained)

  11. VO2 Max is: • The maximal amount of oxygen that your heart can pump to your muscles, and that your muscles can then be used to produce energy.

  12. VO2 Max Mathematically is: • HR X Stroke Volume X aV02=VO2 max

  13. Vo2 Max • Maximal Oxygen Uptake • HR x SV x Avo2 difference • Racing Performance • Maximal Effort for 10 Minutes • Young Athletes 3200 Meter Best • Elite Women – 3000-5000 Meter Best • Elite Men – 5000 Meter Best

  14. VO2 Max is: • A DATE PACE workout. Start as soon as possible in the season

  15. Cardiovascular Adaptationsto Endurance Running • Heart size, weight & volume increases • Left ventricle chamber & wall thickness increase • Stroke Volume increases • Resting heart rate decreases • Lower steady state heart rate • Blood flow increases to working muscles • Blood volume & composition increases

  16. Sports Science Testing to Determine Individual Athletes’ Profiles: • Max VO2 • vVO2 • Max Lactate • Lactate Threshold • Aerobic Threshold • Fractional Utilization of LT & AT based on vV02

  17. Aerobic: Aerobic Efficiency • Development of Lactate Threshold & Aerobic Threshold • Substrate Capability • Cellular Oxygen Uptake • Capillarization • Aerobic Metabolites

  18. Aerobic Threshold • Fatty Acid Primary Energy Source below threshold • Glycogen Primary Energy Source above threshold • Shift @ 65-70% of Vo2 Max

  19. Lactate Threshold • Blood lactate production exceeds removal • Shift from complete oxidation to contribution anaerobically • Below point, no accumulation of lactic acid

  20. Improvements in Thresholds Improvements in both thresholds occur with endurance running training. Improvements in Aerobic Threshold marks an increase in the use of Fatty Acids at increasing running speeds thus sparing glycogen. Improvement in Lactate Threshold marks an increase in glycogen sparing through a more efficient breakdown of glycogen as a substrate, this sparing will increase the running speed of this threshold.

  21. Muscular System • Slow Twitch Muscle Fiber • Oxidative Fast Twitch Muscle Fiber • Increased Capillarization • Increased Mitochondria, size & number • Increased Oxygen Extraction (avO2 Difference)

  22. Metabolic System • Increase in Myoglobin • Increase in Fatty Acid, Storage & Usage • Increase in Glycogen, Storage & Usage • Increase in Aerobic Enzymes, Volume & Activity

  23. Sports Science Testing to Determine Individual Athletes’ Profiles: • Max VO2 • vVO2 • Max Lactate • Lactate Threshold • Aerobic Threshold • Fractional Utilization of LT & AT based on vV02

  24. Anaerobic Glycolytic • Anaerobic Efficiency • Anaerobic Capacity • Lactate & Phosphate Tolerance • Buffering Capacity @ Event Speed

  25. Anaerobic Glycolytic System • Glycolysis & Glycogenolysis • Phosphofructokinase (PFK) & Phosphorylase • Buffering Capacity & By-Products of the Anaerobic Glycolytic System • Muscle Fiber Recruitment • Fatigue & the Anaerobic Glycolytic System

  26. Anaerobic Glycolysis • Glycolysis = ATP generating metabolic process-Glucose to Pyruvic Acid • Phosphofructokinase (PFK); Phosphorylase; Lactate Dehydrogenase (LDH) • Sodium Bicarbonate; Muscle Phosphates; Hemoglobin

  27. Anaerobic Glycolytic Adaptations to Training • Glycolytic Capacity & Endurance improved with training • Glycolysis & Glyogenolysis enhanced by adaptations to three main enzymes; PFK, Phosphorylase, & LDH • Increase in Buffering Capacity, 12-50%; Sodium Bicarbonate, Muscle Phosphate, & Hemoglobin • Increase in Muscle Fiber Recruitment & Contractile Forces

  28. Fatigue & Anaerobic Glycolytic System • Accumulation of Hydrogen Ions (H+) and Increase in Acidity Levels • Accumulation & Increase in Acidity will decrease Metabolic & Contractile Activity • Effect PFK Activity • H+ accumulate in Ca++ storage area • Myosin & Actin Cross bridge • Action Potential @ Neuromuscular Junction

  29. Neuromuscular Strength • Strength Endurance: Contractile Endurance • Elastic Strength Contractile Power & Elasticity • Specific Strength Core Strength & Functional Strength

  30. Strength Training • Goal of Strength Training • Recruit greater amount of muscle fibers then when running distance events • Minimize ground contact time • Improve Posture and as a by product, improve running mechanics • Become a better all around athlete (Ethiopian & Kenyan model)

  31. Biomechanical • Body Mechanics • Recovery Mechanics • Ground Preparation Mechanics • Impulse Mechanics • Arm Action Mechanics

  32. Combined & Critical Zones • Physiological (Aerobic/Anaerobic) • Biomechanical • Psychological • Tactical

More Related