Enviromental Effects of Exercise Flashcards
What happens to the air as altitude increases
pressure decreases
reduced partial pressure =
reduced rate of diffusion
how long should a team stay at altitude before competing
at least 2 weeks
reduced rate of diffusion effects - happens at altitude
- decrease saturation of haemoglobin
- decrease diffusion of 02 to muscle cell - less oxygen at muscles
Reduction in v02 Max means
reduced aerobic capacity so demand on anerobic increases meaning early fatigue
Benefits of altitude
-increase EPO
-increase RBC
-more oxygen in blood = more at muscles
Exercise in heat leads to
decrease performance and illness
hyperthermia
increase in core body temp of several degrees
hyperthermia and cardiovascular drift =
thermal strain
4 Effects of heat on CV system
-dilation of arterioles and cappilaries - increase blood to limbs
-Decrease SV,CO and BP
- increase strain on CV system
-reduced 02 to muscles
Effect of heat on respiratory system
drying of airways - breathing is difficult and more mucus
increased BF - higher o2 cost
what’s effected at altitude
PP of oxygen in alveoli
what occurs if you go straight from sea level to altitude
altitude sickness so athletes should acclimatise gradually
body can get used to changes gradually
4 impact on altitude on body systems
-increase BR
-decrease blood plasma volume to increase RBC density
-Decrease SV which increases HR
-reduced metabolic processes at muscles
overall effect of altitude
putting more stress on the body so when you go back down to sea level the body has undergone adaptations which will improve performance
