Mechanics of Breathing in Horses at Rest and During Exercise

摘要: The respiratory mechanics together with the rate of work breathing were studied in five healthy adult Standardbred horses at rest and during different levels exercise on a treadmill (0.8-2.3 ms−1, 7% slope). In three stride frequency was also determined. The ventilatory response to increased linearly speed up 9.6 times resting values sustained more by an increase than tidal volume. At most elevated load, volume averaged 5.2 1.4 values, respectively. Lung resistance decreased intense level about 30% average value observed rest, while lung dynamic compliance remained unchanged. (Wresp, W) exponentially ventilation (Ve, 1 min−1) according equation: Wresp=5.263Ve1.5897 × 10−4. animals investigated definite locomotor-respiratory coupling trot two walking. This observation, other considerations based available data energetics respiration, suggests that efficiency equine system is relatively high. addition, when compared smaller mammals (man dog), are, mechanical terms, economical breathers.