The mean and peak HR of EX stallions were 149
and 164 bpm, respectively. Rectal and IMNT of EX stallions
increased (P < 0.0001) by approximately 1.9°C
and 2.4°C, respectively, after 22 min of exercise (Figure
1). Although not signifi cant, EX stallions experienced a
mean increase (P = 0.33) in SQST of 0.8°C from 0 to 22
min of exercise (Figure 1). Analysis of T0, T24, and T48
semen samples showed no effect (P > 0.05) of treatment
or treatment by week interaction for any of the sperm
quality and quantity end points measured (Table 2).
Signifi cant, positive correlations existed between
SQST, IMNT, RCT, and AMBT; humidity was not highly
correlated with any of the measured temperatures in this
study (Table 3)