The purpose of the present study was to investigate the effects of cold exposure discontinuation on local cold tolerance of older retired female haenyeos in Korea. A total of 30 older women participated in this study: older retired haenyeos (89 ± 4 y in age, N = 10), active haenyeos (current divers) (75 ± 4 y, N = 10), and age-matched non-divers (75 ± 6 y, N = 10). Our criterion for local cold tolerance was cold-induced vasodilation (CIVD) of the finger. Active haenyeos showed greater local cold tolerance in terms of higher minimum temperature of the left finger during immersion and recovery than the other two groups (P < 0.05). Furthermore, active haenyeos showed higher skin temperatures of the right finger and left foot as well (P < 0.05). Older retired haenyeos displayed the second best minimum finger temperature both during immersion and during recovery (15 min and 20 min), whereas their local cold tolerance was evaluated as inferior to active haenyeos and the age-matched non-divers in CIVD frequency, finger pain sensation, thermal comfort, and finger temperature during the earlier period of recovery (5 min and 10 min). These results suggested that older retired haenyeos' cold tolerance in their extremities disappeared in terms of finger temperature in their initial recovery periods, but that they might still retain cold adaptation in terms of minimum finger temperature or later recovery responses, even though the attributes were not marked as much as those of active haenyeos.

中文翻译：

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停止冷暴露对韩国退休女潜水员“Haenyeos”手指冷引起的血管舒张的影响

本研究的目的是调查停止寒冷暴露对韩国老年退休女性海女当地耐寒性的影响。共有 30 名老年女性参与了这项研究：年长的退休海女（89 ± 4 岁，N = 10）、活跃海女（现任潜水员）（75 ± 4 岁，N = 10）和年龄匹配的非潜水员（75 ± 6 岁，N = 10）。我们的局部耐寒标准是手指的冷诱导血管舒张 (CIVD)。与其他两组相比，活跃的海女在浸泡和恢复过程中左手手指的最低温度更高，表现出更高的局部耐寒性（P < 0.05）。此外，活跃的海女的右手手指和左脚皮肤温度也更高（P < 0.05）。年龄较大的退休海女在浸泡和恢复期间（15 分钟和 20 分钟）都显示出第二好的最低手指温度，而在 CIVD 频率、手指疼痛方面，他们的局部耐寒性被评估为不如活跃的海女和年龄匹配的非潜水员恢复早期（5 分钟和 10 分钟）的感觉、热舒适度和手指温度。这些结果表明，老年退休海女四肢的耐寒性在其初始恢复期就手指温度而言消失了，但在最低手指温度或后期恢复反应方面，他们可能仍保持冷适应，即使这些属性不是标记与活跃的海女的标记一样多。而在恢复的早期阶段（5 分钟和 10 分钟），他们的局部耐寒性在 CIVD 频率、手指疼痛感、热舒适度和手指温度方面被评估为不如活跃的海女和年龄匹配的非潜水员。这些结果表明，老年退休海女四肢的冷耐​​受在其初始恢复期就手指温度而言消失了，但在最低手指温度或后期恢复反应方面，他们可能仍保持冷适应，即使这些属性不是标记与活跃的海女的标记一样多。而在恢复的早期阶段（5 分钟和 10 分钟），他们的局部耐寒性在 CIVD 频率、手指疼痛感、热舒适度和手指温度方面被评估为不如活跃的海女和年龄匹配的非潜水员。这些结果表明，年长的退役海女四肢的冷耐​​受在其初始恢复期就手指温度而言消失了，但在最低手指温度或后期恢复反应方面，它们可能仍保持冷适应，即使这些属性不是标记与活跃的海女的标记一样多。