Watanuki S, Hiraoka M, Doi T, Kiyokawa H
Faculty of Science of Living, Osaka City University.
Ann Physiol Anthropol. 1992 Nov;11(6):585-92. doi: 10.2114/ahs1983.11.585.
The purpose of this study was to evaluate the effects of clothing made of a new material that is, the polyester staple containing the ceramics and to reflect the solar heat load on physiological responses during rest, exercise (50% VO2max) and recovery on a cycle ergometer. Six young female subjects exposed their back to an artificial solar heat load of an intensity of 680 kcal/m2/h with an air temperature of 30 degrees C. The data were compared to those obtained by wearing clothing made of cotton material. The results were as follows. The cardiac output and oxygen consumption obtained at the end of recovery were increased by solar heat load when the subjects wore cotton material. However, these values showed no significant increase when the subjects wore solar heat reflecting clothing. Furthermore, the cardiac output at the end of submaximal work and recovery were higher for the cotton material compared to the heat reflecting clothing in the solar heat load. The increase of cardiac output for the cotton material may show the increase of skin blood flow for the body heat dissipation. Those results suggest that the solar heat reflecting clothing may decrease the physiological strain like a blood redistribution for the body heat dissipation during exercise in summer sunlight.
本研究的目的是评估一种新型材料制成的服装，即含陶瓷的聚酯短纤维服装，在休息、运动（50%最大摄氧量）及在自行车测力计上恢复过程中，其反射太阳热负荷对生理反应的影响。六名年轻女性受试者在空气温度为30摄氏度的条件下，将背部暴露于强度为680千卡/平方米/小时的人工太阳热负荷下。将这些数据与穿着棉质材料服装时获得的数据进行比较。结果如下。当受试者穿着棉质材料服装时，恢复结束时的心输出量和耗氧量因太阳热负荷而增加。然而，当受试者穿着反射太阳热的服装时，这些数值并未显著增加。此外，在太阳热负荷下，次最大运动量结束时和恢复过程中的心输出量，棉质材料的高于反射热服装的。棉质材料心输出量的增加可能表明皮肤血流量增加以进行散热。这些结果表明，反射太阳热的服装可能会减少夏季阳光下运动时身体散热所需的血液重新分布等生理应激。
