Question

Exercising in a hot environment

a. Facilitates a reduction in blood flow to the skin in order to preserve fluids

b. Accelerates enzymatic reactions so that overall VO2 max is improved

c. Leads to dramatic reductions in antidiuretic hormone secretion

d. Compromises VO2 max due to alterations in blood flow distribution

Answer 1

Option D-Compromises VO2 max due to alterations in blood flow distribution.

During exercise in hot environment your core body temperature increases. In order to cool your body ,It sends more blood to circulate through the skin.There is more blood to skin & less blood to muscles,this increases heart rate.

There is increase in heart rate and decrease in stroke volume.This cardiovascular drift leads to a consistent, & proportionall decrease in VO2max.

VO2 max is the maximum rate during exercise at which the heart, lungs & muscles can effectively use oxygen .

Option a- False -there is Increase in Blood flow

Option B-False-There is decrease in VO2 max

Option C-False-There is Increased secreation of ADH which leads to reduce water loss by increasing water reabsorption