Skin temperatures before, during and after exercise in three horses. A: Skin temperatures on left hind leg and B: right hind leg, C: Skin temperature on the neck side with no mane and D: opposite neck side with mane. Horses exercised one after the other on a 6450 m long track during five consecutive days according to a pre-determined schedule which included four exercise sessions interrupted by pauses. Hatched lines show onset and end of exercise. Symbols written in the center of figure represent one of each treatments, respectively, and when filled p < 0.05.