Exercise in Heat
No description yet. This curated deck is ready for daily study.
Card preview (11)
Heat acclimitisation
Used to get an athlete used to exercise within the heat Reduced Salinity Pre sweating response Used to help marathon runners get used to being in the heat for prolonged periods Olympic events Summer tournaments
Too much heat causes:
Dehydration Increase in core temp Restricted blood flow Decreased glycogen capacity
How can human keep their temperature within a specific range
Can be lost by radiation, conduction, conviction and evaporation Can be gained by metabolism or the environment
How is temperature monitored
Thermometers Thermoguns These ain’t accurate at all usually off by one degree Thermometer pills allowing for true internal temps Rectal probe Core monitor Like a heart strap Maximal temperature for a study is 39.5
Thermo-regulatory control
Regulated by the preoptic-hypothamulus Thermoreceptors detect this through the sympathetic nervous system
response to heat
Performance decreases over time Heart rate increase
Wet bulb globe thermometer
Takes into account dry heat Those who take fluids tend to have lower core temperatures during prolonged exercise as they can maintain skin blood flow
Heat Acclimatisation
Physiological changes as a result of living in a hot climate for a while By performing a period of heat acclimatisation athletes can develop beneficial Physiological changes and adaptations that may help maintain prolonged exercise
Benefits of of heat acclimitsation
Increased plasma volume Reduced heart rate Increased sweat rate Reduced core temperature
Methids of heat acclimation which are done closer to a given event
Baseline testing Isoprogressive maintaining core temperature Short and long term adaptation Going off to warmer climates
When it goes wrong
May over rise of core temperature Heat stroke deaths Caused due to a failure of recognised symptoms Medical tents which have ice baths Races maybe cancelled or delayed