Johnson A T, Dooly C R, Blanchard C A, Brown E Y
University of Maryland, Shriver Laboratory, College Park 20742-5711, USA.
Am Ind Hyg Assoc J. 1995 Sep;56(9):858-65. doi: 10.1080/15428119591016485.
Work performance of mask wearers has been shown to be less than performance of the same individuals without masks. How much this performance decrement is attributable to psychological factors was the subject of this study. This experiment was designed to give quantitative information about the effect of anxiety level on relative work performance while wearing a respirator mask. Twenty subjects were tested for trait anxiety levels and performed on a treadmill at 80-85% of their maximum heart rates until they reached voluntary end-point. Physiological, metabolic, and subjective measurements were taken every minute. While experimental variability precluded many of the results from achieving statistical significance, performance times with the mask averaged less than without the mask. Anxious subjects experience more discomfort, perform for shorter times, and accomplish less total work than their lower anxiety counterparts, even when rate of work can be adjusted.
研究表明，戴口罩者的工作表现低于不戴口罩的同一批人。这种表现下降在多大程度上归因于心理因素是本研究的主题。本实验旨在提供关于焦虑水平对佩戴呼吸面罩时相对工作表现影响的定量信息。对20名受试者进行了特质焦虑水平测试，并在跑步机上以其最大心率的80 - 85%进行运动，直到他们达到自主终点。每分钟进行生理、代谢和主观测量。尽管实验变异性使许多结果未能达到统计学显著性，但戴口罩时的表现时间平均比不戴口罩时要短。焦虑程度高的受试者比焦虑程度低的受试者感到更多不适，工作时间更短，完成的总工作量更少，即使工作速率可以调整。
