Koh Frank C, Johnson Arthur T, Scott William H, Phelps Stephany J, Francis Erica B, Cattungal Sanjay
Biological Resources Engineering, University of Maryland, College Park, MD 20742, USA.
J Occup Environ Hyg. 2006 Jun;3(6):317-22. doi: 10.1080/15459620600691264.
Many studies have shown that individuals perform better if not wearing a respirator compared with wearing a respirator. This study examined the degree of performance reduction attributable to specific dominant character traits. The subjects performed on a treadmill at a constant speed and grade resulting in 80-85% VO(2)max. A modified M40 respirator was used to create three levels of inspiratory resistance: 2.8, 16.8, and 27.3 cmH(2)O*(sec/L). The 31 subjects were tested using a Myers-Briggs Type Indicator and State-Trait Anxiety Inventory. Multiple regressions and an ANOVA were used to test for correlation. When air intake is very constricted, the only multiple regression equation that was found to be statistically significant was sensing-intuition (how one takes in information) and thinking-feeling (how one makes a decision) vs. performance time for the highest value of inhalation resistance. A simple linear regression between trait anxiety level and performance time was not found to be statistically significant for the same highest value of inhalation resistance.
许多研究表明，与佩戴呼吸器相比，不佩戴呼吸器时个体的表现更佳。本研究考察了特定显性性格特征导致的表现下降程度。受试者在跑步机上以恒定速度和坡度运动，运动强度达到最大摄氧量（VO₂max）的80 - 85%。使用改良的M40呼吸器来设置三种吸气阻力水平：2.8、16.8和27.3厘米水柱·秒/升。使用迈尔斯-布里格斯性格分类法（Myers-Briggs Type Indicator）和状态-特质焦虑量表（State-Trait Anxiety Inventory）对31名受试者进行测试。采用多元回归和方差分析来检验相关性。当进气非常受限的时候，对于最高吸气阻力值，唯一被发现具有统计学显著性的多元回归方程是感觉-直觉（个体获取信息的方式）和思考-情感（个体做决策的方式）与表现时间之间的关系。对于相同的最高吸气阻力值，未发现特质焦虑水平与表现时间之间的简单线性回归具有统计学显著性。
