Chapter 21 - Training for Anaerobic and Aerobic Power Flashcards
What are common vital signs?
- Temperature
- Pulse
- Respiratory Rate
- Blood Pressure
What are some uncommon vital signs?
- Pain
- Blood Glucose
- Functional Status
- Shortness of Breath
What is an emerging vital sign?
- Cardiorespiratory Fitness
Describe the cohort that were followed for the study on cardiorespiratory fitness as an indicator of long-term mortality risk?
- 122k people
- stratified by age-sex-matched cardiorespiratory fitness
- symptom-limited exercise treadmill testing
What was the adjusted mortality risk of reduced performance on exercise treadmill testing comparable to?
- traditional clinical risk factors (CAD, smoking)
What was the upper limit of benefit of increased aerobic fitness on mortality risk?
- There was none
What is the take-away from the study on cardiorespiratory fitness and long-term mortality?
- Cardiorespiratory fitness is a modifiable indicator of long-term mortality
- Health care professionals should encourage patients to achieve and maintain high levels of fitness
What are the 4 principles of exercise training?
- Overload
- Specificity
- Individual Differences
- Reversibility
What is the overall objective of exercise training?
Stimulate
- Structural adaptation
- Functional Adaptations
- Improve performance in specific physical tasks
Is the basic approach to physiological conditioning similar for men and women?
- YES
What does achieving appropriate overload require?
Manipulating Training:
- Frequency
- Intensity
- Duration
Who does the concept of individualized and progressive overload apply to?
- Athletes
- Sedentary Persons
- Disabled Persons
- Cardiac Patients
How do you acquire health-related benefits from regular exercise?
- High Volume
How do you improve aerobic capacity with regular exercise?
- High intensity
What does exercise training specificity refer to?
- Adaptations in metabolic and physiological function that depends upon the type and mode of overload imposed
What is the most effective evaluation of sport-specific performance?
- When measurement closely simulates actual activity and/or muscle mass/movement patters the sport requires
What are the classifications of physical activity based on duration of all-out effort?
- Strength-Power
- Sustained Power
- Anaerobic Power-endurance
- Aerobic Endurance
Describe the Strength-Power classification of physical activity
Duration
- 4s
Energy Source
- ATP in muscle
Example
- Power lift, high jump, javelin throw
Describe the Sustained Power Physical Activity Classification
Duration
- 10s
Energy Source
- ATP
- PCr
Examples
- Sprints, Fast Breaks, Football Line Play
Describe the Anaerobic Power-endurance physical activity classification
Duration
- 10s - 1.5min
Energy Source
- ATP
- PCr
- Lactate
Examples
- 200-400m dash, 100m swim
Describe the Aerobic Endurance physical activity classification
Duration
- more than 3min
Energy Source
- Electron Transport-Oxidative Phosphorylation
Examples
- Beyond 800m run
What must overload do when training for specific aerobic activities?
- engage appropriate muscles
- Exercise at a sufficient level to stress the cardiovascular system
What is seen when measuring aerobic capacity for an exercise dissimilar to one the athlete trained in?
- Limited improvements
How does specific overload of muscles with endurance training enhance performance?
Facilitates ____ by trained muscles
- O2 transport
- O2 Extract
Where do adaptations occur when training?
- In specifically trained muscles
- Apparent in exercise that activates that musculature
Why does greater blood flow to specific muscles after training happen?
- Increased microcirculation
- More effective redistribution of cardiac output
- Combined effect of both factors
What is an example of training specificity?
- 15men: swim 1hr/day, 3time/week, for 10 weeks at HR of 85-95%
- Large increase in VO2max and Max Swim Time
- Small increase in VO2max and Max Run Time
When do optimal training benefits occur?
- When exercise programs focus on individual needs and participants’ capacities
Describe the reversibility Principle
- Detraining occurs rapidly when stopping training
How quickly can detraining occur following termination of training program?
- only 1-2 weeks
Describe the time frame of detraining following the termination of a training program
1-2 Weeks
- reduced metabolic capacity
- reduced exercise capacity
Several months
- Most improvements fully lost
What are the Anaerobic system changes that occur with training?
Increased
- anaerobic substrates
- quantity/activity key enzymes
- capacity to generate high level blood lactate during all-out exercise
- levels of glycogen/glycolytic enzymes
- motivation/tolerance
What changes happen to the aerobic system with training?
- Ventilation-Aeration
- Central Blood Flow
- Active Muscle Metabolism
- Peripheral Blood Flow
What changes to the ventilation-aeration system happen with aerobic training?
- Minute Ventilation
- Perfusion Ratio
- Oxygen Diffusion Capacity
- Hb-O2 Affinity
- Arterial Oxygen Saturation
What changes to the Central Blood Flow occur due to aerobic training?
- Cardiac Output (HR, Stroke Volume)
- Arterial Blood Pressure
- Oxygen Transport Capacity (Hb)
What changes to the Active Muscle Metabolism occur due to aerobic training?
- Enzymes and Oxidative Potential
- Energy Stores/Substrate Availabilty
- Myoglobin Concentration
- Mitochondria Size/Number
- Active Muscle Mass
- Muscle Fiber Type
What changes to the Peripheral Blood Flow occur due to Aerobic Training?
- Flow to nonactive regions
- Arterial Vascular Reactivity
- Muscle Blood Flow
- Muscle Capillary Density
- O2 Diffusion
- Muscle Vascular Conductance
- O2 Extraction
- Hb-O2 affinity
- Venous Compliance/reactivity
What is the Fick Equation?
VO2 = Cardiac Output x (a-v)O2 Difference
Cardiac Output = HR x SV
What changes max HR? What does not?
Does
- Age
Does Not
- Training
What changes to the Fick Equation occur due to cardiovascular adaptations?
- Stroke Volume
What changes to the Fick Equations occur due to Respiratory and Muscular Adaptation?
- (a-vO2 difference)
What does aerobic training improve in skeletal muscle?
- Capacity for O2 metabolism (respiratory) control
What do endurance-trained skeletal muscle contain compared to less active fibers?
- Larger and more mitochondria
How much does mitochondrial enzymes increase with aerobic training?
- 50%
How does intramuscular fatty acid oxidation increase from Aerobic Training?
- Greater blood flow in trained muscle
- More fat-mobilizing/metabolizing enzymes
- Enhanced muscle mitochondrial respiratory capacity
- Decreased catecholamine release for same absolute power output
Why does Greater blood flow within trained muscle increase intramuscular fatty acid oxidation?
- Increase O2 delivery
- Increase metabolic by-product removal
Why do more fat-mobilizing and fat-metabolizing enzymes increase intramuscular fatty acid oxidation?
- increase fat catabolism/oxidation
- More ATP from fat
Why does enhanced muscle mitochondrial respiratory capacity increase intramuscular fatty acid oxidation?
- Increase oxidize CHO heavy exercise
- E-transport chain
Why does decreased catecholamine release for the same of absolute power output increase intramuscular fatty acid oxidation?
- Decreased Sympathetic NS activity
- CHO ‘sparing’ effect
What does aerobic training do to carbohydrate use during maximal exercise? what about fats during submaximal?
Carbs
- Enhance capacity to oxidize
Fats
- increased fatty acid combustion
What does the reduced use of carbs and increased use of fats for energy during submaximal exercise do?
- Decreased muscle glycogen use
- Reduced glucose production (glycogenolysis)
- Reduced use of plasma-borne glucose
What happens to all fiber types in aerobic training?
- enhanced metabolic adaptations
- maximize existing aerobic potential
What muscle fiber types do endurance athletes have?
- Larger Slow-twitch than fast-twitch for the same muscle