Enhanced protection face masks do not adversely impact thermophysiological comfort.
Enhanced protection face masks do not adversely impact thermophysiological comfort.
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DOI：
10.1371/journal.pone.0265126
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发表时间：
2022
期刊：
影响因子：
3.7
通讯作者：
Golovin K
中科院分区：
文献类型：
--
作者：
Gholamreza F;Nadaraja AV;Milani AS;Golovin K
世界卫生组织倡导强制使用口罩来抗击新冠肺炎的传播，建议使用多层口罩以加强保护。然而，这一建议并未被广泛采用，不遵守规定的人表示在长时间使用口罩时感到不适。然而，关于面罩面料/服装系统如何影响热生理舒适性的科学理解仍然缺乏。我们的目标是研究织物/服装的特性如何改变导致热生理应变的热阻和蒸发阻力。我们用商业面料制作了12个不同的分层面膜(D1-D5，T1-T6，Q1)，使用了不同的滤镜。研究采用了三种方法：(1)使用中号口罩测量所有测试口罩的蒸发阻力和热阻，以确定面料性能的影响；(2)通过测试紧贴(小)、合(中)和松(大)口罩T-6来测试口罩大小的影响；(3)通过戴上大尺寸口罩T-6来测试口罩适合的效果，T-6既松又紧，使用暖体假人牛顿。方差分析表明，添加N95中层过滤器对所有面膜的热阻和蒸发阻力无显著影响(P值分别为T-2和T-3(P<0.05)，而尺寸对热阻和蒸发阻力有显著影响(P<0.05)。气隙大小与T-6口罩的热阻和蒸发阻力的相关系数分别为R2=0.96和0.98。紧贴型大面膜在散热散湿方面具有更好的性能(P<0.05)。含有过滤器和防水、抗菌/抗病毒涂层的三层口罩不会增加不适感。有趣的是，配戴口罩改善了使用者的舒适性，减少了热阻和蒸发阻力，这与口罩更安全会降低舒适性的先入为主的观念截然相反。
The World Health Organization has advocated mandatory face mask usage to combat the spread of COVID-19, with multilayer masks recommended for enhanced protection. However, this recommendation has not been widely adopted, with noncompliant persons citing discomfort during prolonged usage of face masks. And yet, a scientific understanding on how face mask fabrics/garment systems affect thermophysiological comfort remains lacking. We aimed to investigate how fabric/garment properties alter the thermal and evaporative resistances responsible for thermophysiological strain. We constructed 12 different layered facemasks (D1-D5, T1-T6, Q1) with various filters using commercially available fabrics. Three approaches were employed: (1) the evaporative and thermal resistances were measured in all the test face masks using the medium size to determine the effect of fabric properties; (2) the effect of face mask size by testing close-fitted (small), fitted (medium) and loose fitted (large) face mask T-6; (3) the effect of face mask fit by donning a large size face mask T-6, both loose and tightened using thermal manikin, Newton. ANOVA test revealed that the additional N95 middle layer filter has no significant effect on the thermal resistances of all the face masks, and evaporative resistances except for face masks T-2 and T-3 (P-values<0.05) whereas size significantly affected thermal and evaporative resistances (P-values<0.05). The correlation coefficient between the air gap size and the thermal and evaporative resistance of face masks T-6 were R2 = 0.96 and 0.98, respectively. The tight fit large face mask had superior performance in the dissipation of heat and moisture from the skin (P-values <0.05). Three-layer masks incorporating filters and water-resistant and antimicrobial/antiviral finishes did not increase discomfort. Interestingly, using face masks with fitters improved user comfort, decreasing thermal and evaporative resistances in direct opposition to the preconceived notion that safer masks decrease comfort.
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影响因子：
3.5
作者：
Li, Y.;Wong, T.;Newton, E.
通讯作者：
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影响因子：
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作者：
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DOI：
10.1001/jama.2021.1505
发表时间：
2021-03-09
期刊：
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通讯作者：
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影响因子：
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Ding, Dan;Tang, Tian;McDonald, Andre
通讯作者：
McDonald, Andre