Transcript Slide 1

Heart Rate Guided Training for
Endurance Athletes
Darrin Bright, MD
MAX Sports Medicine Institute
Overview
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Epidemiology
Training Zones
Physiology
Performance Training
Epidemiology
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50,000,000 adult runners in US
720 Marathons
Columbus 16th Largest
518,000 Marathon Finishers in 2011
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2.2% increase from 2010 (9.9% in 2009 & 8.6% in 2010)
59% Male
41% Female
Gender Difference
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Male average age 39.6 (4:15:54 average time)
Female average age 36.0 (4:40:53 average time)
Training Zones
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Zone 1: Active Recovery
 Easy aerobic activity
Zone 2: Aerobic
 Long Slow Distance
Zone 3: Tempo
 Comfortably hard
Zone 4: Interval
 Introducing anaerobic intensity
Zone 5: Maximum Capacity
 High anaerobic
Training Zones
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Most endurance athletes
spend nearly all training
workouts in upper zone 3
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Training never, never land
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Not hard enough to become
race fit
Not easy enough to recover
and rid body of fatigue
Train Smarter … Not Harder
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What is your GOAL?
Over-training
Prevent Injury
Maximize Performance
Determine Training Pace
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Perceived exertion
Percentage of targeted race
pace
Heart Rate Zones
Maximum Heart Rate
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MHR Determined by:
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Genetics
Age
NOT fitness level
Calculated by:
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VO2 max testing
Maximum Heart Rate
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Estimated by:
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Straight Estimate
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% (220-age)
Conservative
Example: 70% of 200 bpm = 140 bpm
Karvonen formula
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RHR + % (MHR-RHR)
More aggressive
Example: 60 bpm + 70% (200-60) = 158 bpm
VO2max Testing
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Measure Individual
Exercise Physiology
Determine Maximum HR
Prescribe Accurate
Training Zones
Maximize Performance
Endurance Physiology
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Key Parameters of Aerobic Fitness
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Maximal Oxygen Uptake (VO2max )
Running Economy
Lactate Threshold
Maximal Oxygen Uptake - VO2max
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Defined
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Maximum amount of oxygen
consumed by the body
during one minute of
exercise
Maximum ability to deliver
oxygen from the air to the
exercising muscles
Maximal Oxygen Uptake - VO2max
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Determinants of Maximal Oxygen Uptake
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Cardiac Output
Oxygen Carrying Capacity
Skeletal Muscle Mass
& Oxygen Utilization
Maximal Oxygen Uptake - VO2max
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Cardiac Output
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Stroke Volume X Heart Rate
Adaptations of Training
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Increased Cardiac Output
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Increased Plasma Volume
Increased Stroke Volume
Maximal Heart Rate Unchanged
Runner’s Bradycardia
Maximal Oxygen Uptake - VO2max
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Oxygen Carrying
Capacity
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Red Blood Cells
Hemoglobin
Erythropoietin
Extraction
Maximal Oxygen Uptake - VO2max
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Skeletal Muscle Mass & Oxygen
Utilization
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Aerobic enzyme activity
Free fatty acid metabolism
Capillary density
Running Economy
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Defined
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Oxygen uptake required by a given
exercise intensity
Considerable variability among
athletes
Running Economy
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Affects of Training on Running Economy
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Higher values seen with
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Typical / Comfortable pace
Older more experienced runners
Higher weekly miles
Improvements take time in trained athletes
Running Economy
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Methods for Improving
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Varying training pace
Resistance Training
Improve technique
Possibly improve elasticity / flexibility
Lactate Threshold (LT)
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Defined
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Exercise intensity at which
blood lactate levels increase
above resting levels.
Specific to exercise task
Lactate Threshold
Lactate Threshold
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Training at LT allows high
intensity stimulus without
lactate accumulation that
decreases training duration
Sources of Energy
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ATP is the Energy
Three Source of ATP
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Creatine Phosphate
Anaerobic Glycolysis
Oxidative Phosphorylation
Energy Metabolism
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Creatine Phosphate
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Minimal Amounts Stored in Cell
Very Rapid Reaction
Short Bursts of Speed or
Power (10 seconds or less)
Energy Metabolism
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Anaerobic Glycolysis
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Utilizes local glycogen stores
Supplies energy for 1-3 minutes
Lactic Acid is formed as byproduct
Energy Metabolism
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Oxidative Phosphorylation
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Utilizes Glucose and Free Fatty Acids
Exercise greater than 1 minute
Energy Source Based on Distance
Take Home Points
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Train Smarter…Not Harder!
Determine your unique physiology
Commit to HR based training
Thank You