Phys of Ex First Exam Flashcards
2 systems with exercise and how do they respond
Cardiovascular- gets stressed in exercise and rates increase to supply body and muscles with blood and oxygen to remove wastes
Respiratory- gets stressed with exercise and increases rates to supply blood with oxygen for muscles
Define Ex Phys
Body’s response to exercise
Curitains 4 Factors
1 structured aptitude
2 organic conditioning
3 stroke technique
4 mental attitude
Complete explanation of Ergometer
A way that work can be controlled and measured. advantage upper body minimal movement pulse BP. Disadvantage specific muscle groups.
6 Basic training principles
Individuality Specificity Progressive Overload Hard/Easy Periodization/Variation find other one
Progression with respect to increments
should mean that the increments in training load are small, controlled, and flexible 10% rule per week
2 Types of training and key component of each
Interval Training
-short to moderate work bouts alternating with short to moderate rest periods
-rest interval active vs inactive
Continuous Training
-high intensity continuous training 80-95% max HR
-continuous training and no rest
Acute and chronic response to exercise
Acute -increased HR -Increased respiratory rate -increased body temp -increased BP Chronic -lower resting HR to given load (training effect) -lower BP
Control system and 2 Stressors
Keep the controlled internal environment despite various stressors
- exercise
- heat/humidity
- cold
- fasting
- hydration
Define homeostasis
maintenance of constant or unchanging internal environment REST
Define Steady State
exercise homeostasis
With oxygen, how do you know steady state
Supply=Demands
2 Body systems and 2 organs that work for homeostasis and steady state
CV- Heart
Respiratory-Lungs
3 General components of biological control system
Receptor
integrating center
effector
Explain the 3 components
- stimulus (change in environment) excites the receptor
- sends a message to the integrating center…this information is assessed to its value and how to act upon it
- a message is then sent to an effector where it takes action to correct/react to the stimulus
Negative feedback
the response of the control system is opposite (negative) to the stimulus
Cellular Damage 2 Stresses
- High temperature
- reduced cellular oxygen
- low ph
- production of free radicals
Exercice a real test
of the bodys homeostatic control systems… it has the real potential of disrupting many homeostatic variables
- production of lactic acid
- increase in muscle 02 requirements
- removal of CO2
- Removal of heat
Heavy or Prolonged exercise
challenges all of the control systems (large and low gain) and a steady state is not reached, resulting in fatigue and the end of the exercise bout
Gains
precision capability degree to which the control system maintains homeostasis
