At the same competition (sea level/summer) another athlete is running a 10km race. The athlete is trying to maintain a pace that is around 75% of their maximal aerobic capacity.

1)Will their blood concentrations of bicarbonate and lactate be affected during this race? How/Why?

2)Are they at risk of developing an acid/base disturbance?

3)It is about 30C outside, with a relative humidity of 75%. What is going to happen to this athletes body temperature and sweat rate during their 10km race?

4)What affect will this have on cardiovascular function and performance? How/Why?

5)Does this temp. and RH change the rate of heat production in this athlete?

6)How would heat loss and heat production be affected if the RH were reduced to 25% and the breeze picked up? How/Why?

7)If instead of at sea level, this competition was taking place at 3000m, would this affect our athletes performance? How/Why?