JSSM- 2007, Vol.6, Issue 4, 385

Table 2. Differences in the thermoregulatory responses between pre-pubertal boys and girls exercising in hot and humid environments.

Response	Females	Males
Circulatory
Cardiac Output (Q)	Higher	Lower
Stroke Volume	Lower	Higher
Heart Rate	Higher or similar	Lower or similar
Skin blood flow	?	?
Blood pressure	?	?
Changes in blood volume	?	?
Temperature
Core body temperature (T_C)	Higher or similar	Lower or similar
Rate of increase in T_C	Slower or similar	Faster or similar
Skin temperature	Similar	Similar
Heat loss (E)	Similar	Similar
Heat loss (R, K & C)	?	?
Fluid regulation
Sweating rate	Lower	Higher or similar
Sweat electrolyte loss	Similar	Similar
Sweat gland size	?	?
Sweat rate per gland	Lower	Higher
Number of HASG	Similar	Similar
Metabolic
VO₂	Similar	Similar

Abbreviations: ? = no available research, E = heat loss via evaporation, R, K & C = heat loss via radiation, conduction and convection, HASG = Heat activated sweat glands.