Small Animal Clinical Sciences, University of Tennessee, Knoxville, Tennessee, United States.
Department of Physical Therapy, University of Tennessee, Chattanooga, Tennessee, United States.
Vet Comp Orthop Traumatol. 2021 Jul;34(4):241-247. doi: 10.1055/s-0041-1723786. Epub 2021 Feb 25.
The aim of the study reported here was to determine the effect of cryotherapy on the caudal thigh muscles of dogs. We hypothesized that temperature changes would be greatest in superficial tissues and decrease with tissue depth.
Eight mixed-breed dogs (mean weight 21.2 kg, mean age 3.3 years) were studied. Temperature was measured at the skin surface and at depths of 1.0 and 3.0 cm below the skin using needle thermistor probes that were inserted beneath the site of cold pack application. Treatment consisted of a standard 1.0°C cold pack applied for 20 minutes. Temperature was recorded every minute for the 20 minute cold pack treatment, and for 80 minutes following treatment.
Cutaneous temperatures significantly decreased ( < 0.01), with rapid rewarming of the skin following cold pack removal. Tissue cooling was less profound with increasing tissue depths, but was still significant ( < 0.05). There was no significant difference in muscle temperature between haired and clipped limbs.
A single application of a cold pack to the caudal thigh muscles of dogs for 20 minutes resulted in significant temperature reduction at all tissue depths ( < 0.05). This decrease persisted for ∼60 minutes. The presence of hair did not have a significant effect on muscle cooling ( > 0.05).
本研究旨在确定冷冻疗法对犬后腿肌肉的影响。我们假设温度变化在浅层组织中最大，并随组织深度的增加而降低。
对 8 只杂种犬（平均体重 21.2kg，平均年龄 3.3 岁）进行研究。使用插入冷疗包应用部位下方的针状热敏电阻探头，在皮肤表面和皮肤下 1.0 和 3.0cm 处测量温度。治疗包括应用标准的 1.0°C 冷疗包 20 分钟。在 20 分钟的冷疗包治疗期间和治疗后 80 分钟记录温度。
皮肤温度显著降低（ < 0.01），冷疗包去除后皮肤迅速复温。随着组织深度的增加，组织冷却程度降低，但仍有显著差异（ < 0.05）。有毛和剪毛肢体的肌肉温度无显著差异（ > 0.05）。
单次应用冷疗包对犬后腿肌肉 20 分钟可导致所有组织深度的显著降温（ < 0.05）。这种降低持续约 60 分钟。毛发的存在对肌肉冷却没有显著影响（ > 0.05）。
