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Abstract：
Horse trainers often claim that exercise on a water treadmill (WT) leads to a greater muscle power and development compared to terrestrial locomotion, because of the greater viscosity of water compared to air. This research assesses locomotor changes measured with accelerometers fixed in the pectoral region and in the sacrum midline in six horses subjected to exercise sessions of 40 min duration on a WT without water (DT), and with water at the depth of fetlock (FET) and carpus (CAR) with velocities of 6 km/h and at the depth of stifle (STF) at 5 km/h. Another five horses performed the same exercise sessions but always with a velocity of 5 km/h. Total power increased from DT to FET and CAR, without significant differences between CAR and STF depths when the velocity was the same. However, a significant decrease was found when the velocity was reduced. The greater total power with water was distributed mainly to the dorsoventral axis, with significant increases in dorsoventral displacement and dorsoventral power. Both parameters were significantly affected by velocity and water depth. In conclusion, total and dorsoventral powers increased with velocity and water depth, leading to reduction in longitudinal and mediolateral power, during exercise on a WT.
摘要：
马教练经常声称，与地面运动相比，在水上跑步机（WT）上运动会带来更大的肌肉力量和发展。因为水的粘度比空气大。这项研究评估了用固定在胸区和the骨中线的加速度计测量的运动变化，在没有水的WT（DT）上进行了40分钟的运动训练的六匹马，并且在速度为6km/h的fetlock（FET）和carpus（CAR）深度处以及在5km/h的stifle深度（STF）处的水。另外五匹马进行了相同的锻炼，但速度始终为5km/h。总功率从DT增加到FET和CAR，当速度相同时，CAR和STF深度之间没有显着差异。然而,当速度降低时，发现显着下降。水的总功率较大，主要分布在背腹轴，背腹侧位移和背腹力显著增加。这两个参数都受到速度和水深的显着影响。总之,总功率和背腹侧功率随速度和水深而增加，导致纵向和中外侧力量减少，在WT上锻炼时。
