2007, Piran, Slovenia

Non-thermal factors
heat loss by altering cutaneous vascular conductance. This may be due to the elevated
sweating response compensating for the inhibition of heat loss by decreased cutaneous
vasodilation, which is associated with maintaining muscle blood flow during exercise.
INTERACTION BETWEEN THERMAL AND NON-THERMAL FACTORS
The effects of non-thermal factors on heat loss responses are greater until core temperature
triggers the thermoregulatory system (Kondo et al., 2002). Once core temperature increases
during exercise, this temperature should primarily control heat loss.
EFFECTS OF PHYSICAL TRAINING
It is reported that the increased sweating
rate associated with a rise in exercise
intensity during isometric handgrip
exercise, in which non-thermal factors
play a dominant role in activating
sweating, was enhanced in physicallytrained
individuals, and the greater
sweating response in the trained group
was also evident in the limbs relative to
the trunk (Yanagimoto et al., 2002).
Thus, physical training would also affect
the non-thermal sweating responses, just
as it affects the sweating response
associated with thermal factors.
Figure 1. A model of heat loss responses during exercise.
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