Muscle recruitment inhibited during exercise in the heat
Tucker (2004) showed power output began to fall within the first 30% of maximal self-paced time trial in the heat. This suggested the decrease in performance was not associated with an altered temperature, heart rate or exercise perception.
An athlete comes to you they have been suddenly called up for a outdoor competition in India during the summer temperatures can reach over 40C, they want advice on what they’re drinking strategy should be.
How much should they drink? Before competition, during and after?
What can they do to maximise fluid retention, is just water enough?
ADAPTATIONS Response & effect RESPONSE EFFECT Improved skin blood flow Dissipate heat effectively Lower Heart Rate Work at a higher intensity Effective distribution of CO Meet thermoregulation and metabolism demands Reduction in sweating threshold Evaporative cooling begins earlier Increased distribution of active sweat glands Maximizes evaporative cooling Increased sweat rate Maximizes Evaporative Cooling
ADAPTATIONS RESPONSE EFFECT Reduction in loss of water and electrolytes from sweat Preserves sodium in extra cellular fluids, promotes water retention Better maintenance of Core Temperature Fatigue delay, increase thermoregulatory capacities Increasing sweating sensitivity to increasing core temp Maximizes Evaporative cooling Less reliant on CHO metabolism CHO sparing, less lactate accumulation ?