We examined whether an aerobic exercise intervention in young women with cold sensitivity symptoms improves sleep quality and decreases cold complaints. Furthermore, we examined the association with increased foot skin temperature (Tsk) before falling asleep and decrease in sensitivity to cold in the brain. We recruited 16 female adult volunteers who had cold sensitivity and were not engaged in daily exercise training, and they were divided into an exercise group (EXE) and a control group (CON). EXE was given a 2-week exercise intervention that consisted mainly of walking and jogging. Before and after the intervention, temperature sensation and body temperature parameters were measured just before bedtime; electroencephalogram measurements were taken during sleep; and subjective sleep surveys, including Oguri-Shirakawa-Azumi (OSA) sleep inventory (middle-aged and aged version) and visual analogue scale (VAS), were conducted immediately after waking up. All experiments were performed in the winter season. In EXE, overall and foot warmth and comfort increased (p < 0.05) after the 2-week exercise intervention. The exercise intervention also decreased (p < 0.05) the scores for cold feeling in the fingertips, feet, and toes. In the OSA sleep inventory, factor IV (refreshing) and factor V (sleep length) were increased (p < 0.05) by the exercise intervention. Subjective sleep quality evaluated by VAS increased (p < 0.05) with exercise intervention. The exercise intervention in EXE shortened middle awake time after sleep onset (p < 0.05) and prolonged deep sleep length (p < 0.05). The exercise intervention increased (p < 0.05) alpha-wave power before sleep. In CON, all variables remained unchanged throughout the 2-week control period. Short-term aerobic exercise alleviated peripheral extremity cold sensitivity symptoms and improved subjective sleep quality. Our findings suggest that these improvements were not due to increased Tsk at rest before bedtime but to decreased sensitivity to cold in the brain that was expressed as increased alpha activity.

中文翻译：

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两周的运动干预可改善对寒冷敏感的女性的感冒症状和睡眠状况

我们研究了对有寒冷敏感症状的年轻女性进行有氧运动干预是否可以改善睡眠质量并减少感冒症状。此外，我们还研究了入睡前脚部皮肤温度（Tsk）升高和大脑对寒冷的敏感性降低之间的关系。我们招募了 16 名具有寒冷敏感性且未进行日常运动训练的女性成年志愿者，将她们分为运动组（EXE）和对照组（CON）。EXE接受了为期两周的运动干预，主要包括步行和慢跑。干预前后，睡前测量温度感觉和体温参数；睡眠期间进行脑电图测量；起床后立即进行主观睡眠调查，包括小栗白川安昙（OSA）睡眠量表（中老年版）和视觉模拟量表（VAS）。所有实验均在冬季进行。在 EXE 中，经过 2 周的运动干预后，整体和足部的温暖度和舒适度均有所增加 (p < 0.05)。运动干预还降低了指尖、脚和脚趾的冷感评分（p < 0.05）。在 OSA 睡眠清单中，运动干预增加了因子 IV（刷新）和因子 V（睡眠长度）（p < 0.05）。通过 VAS 评估的主观睡眠质量随着运动干预而增加 (p < 0.05)。EXE 中的运动干预缩短了入睡后的中间清醒时间（p < 0.05）并延长了深度睡眠时间（p < 0.05）。运动干预增加了（p < 0.05）睡前α波功率。在 CON 中，所有变量在整个 2 周的对照期内保持不变。短期有氧运动缓解末梢肢冷敏感症状，改善主观睡眠质量。我们的研究结果表明，这些改善并不是由于睡前休息时 Tsk 增加，而是由于大脑对寒冷的敏感性降低，表现为 α 活性增加。