Exercise Physiology Flashcards
What is aerobic exercise?
designed to increase cardiovascular fitness
sustained exercise at a moderate intensity that uses the aerobic pathways every supply and training adaption which results in a more efficient aerobic pathway
What is the response to acute exercise?
breathing faster and deeper
increase in heart rate
What is VO2 max?
measure of an individuals aerobic capacity
an increase in workload can only occur through anaerobic glycolysis
Respiratory system response
increase from 6 to 200 L/min
increase in TV, 50% greater
increase in respiratory rate
Diffusion during exercise
FICKs Law
rate depends on partial pressure, thickness and area of barrier
What happens to the oxygen disassociation curve during exercise?
shifts to the right increased PH, more acidic increases temperature increases partial pressure of carbon dioxide increases 2,3 BPG
Training effects of aerobic exercise
increased Hb concentrations
increased blood volume
increased S.A of capillaries increases mitochondria
muscle fibre type change from IIb to IIa
cardiac hypertrophy: increased S.V as cardiac muscle increases
angiogenesis: less damage as a result
increases myoglobin, increases storage so body won’t have as much deficit
Cardiovascular response to exercise
Cardiac output rises withe exercise in proportion with vo2 max
cardiac reserve
blood flow during exercise increases 10x in skeletal muscle
blood pressure during exercise
MAP stays constant, rarely >120mmHg
TPR, drops, systolic Bp increases steadily, max 200mmHg
effects of deeper breathing
Deep breathing
Changes pressure in the thorax
Increases venous return
sympathoedral system: increases HR and SV which increases CO
Increased skeletal muscle activity due to increases metabolic vasodilation of skeletal muscles which increases blood supply to skeletal muscles
Sympathetic vasoconstriction in vsiclera
