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