The aim of the study was to evaluate skin temperature of the soles of the feet before and after a provoked asymmetrical running. Seventeen recreational male runners performed two 15 min running tests in the same session. In the first test, participants performed running without modifying their running technique (control condition). In the second running test, they repeated the same protocol using an ankle weight of 1.5 kg in the non-dominant ankle (asymmetrical condition). Rate of perceive exertion, heart rate and spatio-temporal parameters were measured during the running tests. Skin temperature was measured with an infrared camera before and after each condition. Generally, comparing both lower limbs, non-preferred limb (with the ankle weight) had lower contact time (p < 0.001 and ES > 0.8), higher stride length (p < 0.05 and ES > 0.3) and higher stride frequency in asymmetrical condition (p < 0.01 and ES > 0.4). However, no differences were observed on skin temperature between both feet in the two conditions in any of the regions of interest assessed (p > 0.05). Although the asymmetry generation model used provoked technical asymmetries in spatio-temporal parameters during running, no thermal asymmetries were observed between preferred and non-preferred sole of the foot. These results suggested the lower importance of mechanical than physiological mechanisms on skin temperature during running.

中文翻译：

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诱导不对称跑法对足部皮肤温度的急性影响

该研究的目的是评估不对称跑步前后脚底的皮肤温度。17 名休闲男跑者在同一节中进行了两次 15 分钟的跑步测试。在第一个测试中，参与者在不改变他们的跑步技术（控制条件）的情况下进行跑步。在第二次跑步测试中，他们在非优势脚踝（不对称条件）中使用 1.5 公斤的脚踝重量重复了相同的方案。在跑步测试期间测量了感知用力率、心率和时空参数。在每种情况之前和之后，用红外相机测量皮肤温度。一般来说，比较双下肢，非首选肢体（与脚踝重量）的接触时间较短（p < 0.001 和 ES > 0.8），步幅较大（p < 0.05 和 ES > 0。3) 和不对称条件下更高的步频（p < 0.01 和 ES > 0.4）。然而，在评估的任何感兴趣区域的两种条件下，双脚之间的皮肤温度没有观察到差异（p > 0.05）。尽管不对称生成模型在跑步过程中使用了时空参数中引起的技术不对称，但在首选和非首选脚底之间没有观察到热不对称。这些结果表明，在跑步过程中，机械机制对皮肤温度的重要性低于生理机制。尽管不对称生成模型在跑步过程中使用了时空参数中引起的技术不对称，但在首选和非首选脚底之间没有观察到热不对称。这些结果表明，在跑步过程中，机械机制对皮肤温度的重要性低于生理机制。尽管不对称生成模型在跑步过程中使用了时空参数中引起的技术不对称，但在首选和非首选脚底之间没有观察到热不对称。这些结果表明，在跑步过程中，机械机制对皮肤温度的重要性低于生理机制。