Alexander Jill, Rhodes Dr David, Birdsall Daniel, Selfe Prof James
University of Central Lancashire, School of Sport and Health Sciences, Preston, Lancashire, UK.
Institute of Coaching and Performance (ICaP), University of Central Lancashire, School of Sport and Health Sciences, Preston, Lancashire, UK.
Int J Sports Phys Ther. 2020 Apr;15(2):210-220.
In deliberation of the diverse physical traits of rugby union and the known interference adipose tissue has on the ability to cool deeper tissues, evidence is required to understand the effect of cryotherapy modalities to provide optimum outcomes post-injury.
To investigate differences in the cooling ability of three different cryotherapy modalities in a rugby union population in an attempt to describe optimum cooling protocols for the anterior thigh.
Within-subjects randomized control crossover.
Twenty-one healthy male rugby union players took part. Skin surface temperature measured via thermal imaging camera (ThermoVision A40M, Flir Systems, Danderyd, Sweden) alongside Thermal Comfort and Sensation questionnaires following interventions of either Wetted Ice (WI), Crushed Ice (CI) applied in a polythene bag secured by plastic wrap, or CryoCuff® (CC), applied for 20-minutes over the anterior thigh. Participants were grouped by their typical playing position for the sport of rugby union; i.e. forwards and backs.
Significant differences () in T for all modalities compared to baseline and comparing post T between CI and CC () and WI to CC () were displayed. Significantly greater reductions in T noted immediately-post in the group (=≤0.05) compared to the group for, all modalities (=≤0.05). Thermal Comfort and Sensation scores demonstrated significant changes baseline compared to post for all modalities (=<0.05). No significant differences were found when comparing between modalities for Thermal Comfort () or Sensation () for whole group or between positional groups.
Physiological responses to cooling differed across modalities with WI producing the greatest decrease in T Significant variability in T was also displayed between positional factions. Results uphold the importance of the individualization of local cooling protocols when considering physical traits and characteristics within a rugby union population. Findings provide further understanding of the physiological responses to cooling through T quantification in specific populations, helping to guide sports medicine practitioners on optimal cooling application development in sport.
Level 2b.
考虑到英式橄榄球运动员多样的身体特征以及已知的脂肪组织对深层组织降温能力的干扰，需要证据来了解冷冻疗法模式对损伤后提供最佳效果的影响。
研究三种不同冷冻疗法模式在英式橄榄球运动员群体中的降温能力差异，以试图描述大腿前部的最佳降温方案。
受试者内随机对照交叉试验。
21名健康的男性英式橄榄球运动员参与。在使用湿冰（WI）、用保鲜膜固定在塑料袋中的碎冰（CI）或CryoCuff®（CC）对大腿前部进行20分钟干预后，通过热成像相机（ThermoVision A40M，Flir Systems，瑞典丹德吕德）测量皮肤表面温度，并同时进行热舒适度和感觉问卷调查。参与者按其在英式橄榄球运动中的典型比赛位置分组，即前锋和后卫。
显示所有模式与基线相比以及比较CI和CC之间的T（）以及WI与CC之间的T（）时T有显著差异（）。与后卫组相比，前锋组（=≤0.05）在所有模式下（=≤0.05），干预后立即观察到T的显著更大降低。热舒适度和感觉评分显示所有模式下与干预后相比基线有显著变化（= <0.05）。在整个组或位置组之间比较热舒适度（）或感觉（）的模式时未发现显著差异。
不同模式下对降温的生理反应不同，WI导致T的下降最大。位置分组之间T也表现出显著差异。结果支持在考虑英式橄榄球运动员群体的身体特征时局部降温方案个体化的重要性。研究结果通过对特定人群中T的量化进一步了解了对降温的生理反应，有助于指导运动医学从业者制定运动中的最佳降温应用方案。
2b级。
