Department of Industrial and Operations Engineering, University of Michigan, 1161 Tekulve Rd. #401-20, Batesville, IN 47006, USA.
Hum Factors. 2013 Aug;55(4):764-75. doi: 10.1177/0018720812466672.
The aim of this experiment was to investigate the effects of anti-fatigue mats on perceived discomfort and behavioral responses (weight-shifting between the feet) during prolonged standing.
Prolonged standing is a common requirement in the workplace and is a well-known cause of discomfort. Anti-fatigue mats have been shown to reduce discomfort resulting from standing, but no study has identified a particular mat that performs better than others or examined the relationship between discomfort and weight-shifting.
Participants stood for 4 hours on four commercially available "anti-fatigue" mats and a hard surface (control condition). Subjective ratings of discomfort were measured, and in-shoe pressure was recorded and used to evaluate weight-shifting during standing.
Compared to the control condition, after 4 hours of standing discomfort was reduced by three of the four mats, but discomfort ratings did not significantly differ among mats. However, significant differences among mats were found in the frequency of weight-shifting, and weight-shifting was positively correlated to discomfort.
These results suggest that subjective reports of discomfort were not sufficiently sensitive to detect differences among mats for the experimental conditions tested. Behavioral responses, specifically weight-shifting between feet, may provide a more sensitive alternative to subjective reports.
本实验旨在研究抗疲劳垫对长时间站立时感知不适和行为反应（双脚之间的体重转移）的影响。
长时间站立是工作场所的常见要求，也是引起不适的已知原因。抗疲劳垫已被证明可以减轻站立引起的不适，但尚无研究确定哪种垫子比其他垫子更有效，也没有研究过不适与体重转移之间的关系。
参与者在四种市售的“抗疲劳”垫和一种硬表面（对照条件）上站立 4 小时。测量主观不适评分，并记录鞋内压力，以评估站立时的体重转移。
与对照条件相比，在站立 4 小时后，有三种垫子减轻了不适感，但垫子之间的不适感评分没有显著差异。然而，在体重转移的频率方面，垫子之间存在显著差异，体重转移与不适感呈正相关。
这些结果表明，在测试的实验条件下，主观不适报告不够敏感，无法检测到垫子之间的差异。行为反应，特别是双脚之间的体重转移，可能是主观报告的更敏感替代方法。
