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International Journal of Occupational Hygiene، جلد ۱۰، شماره ۴، صفحات ۳۷۷-۳۷۷
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عنوان انگلیسی Empirical study of the manual performance disability caused by exposure to extreme cold air among auto mechanic workers
چکیده انگلیسی مقاله A decrease in body temperature can impair manual performance leading to a lowered capacity to carry out a certain activity. This study aimed to analyze the extent of the effects of extreme cold air exposure on workers’ manual performance. The study population was consisted of 50 outdoor auto mechanics who participated in two experiments carried out in winter and spring. Following a standard method, air environmental factors in each workstation and the physiological responses of the participants were measured. The touch sensory test was conducted to determine the sensory function of their hands. The grip strength and manual dexterity tests were also performed to assess the manual work disability. The hand and pinch grip strength of the auto mechanics were, respectively, reduced by 10.3% and 10.1% in cold air, as compared with the neutral air. The manual dexterity of the auto mechanics was also decreased from 6.3% to 8.8 % in cold air, as compared with neutral air. The prevalence of finger sensation disorders in auto mechanics was 62% in cold air, while it was only 4% in neutral air. There was also a significant correlation between finger skin temperature and manual dexterity (r=-0.80, p< 0.01), handgrip strength (r=0.74, p< 0.01), and pinch grip strength (r=0.79, p< 0.01). There was also a significant correlation between finger sensory function and manual dexterity (r=0.65, p< 0.01). During extreme cold air exposure, the physiological and sensory changes significantly reduced the manual performance of the auto mechanics. This study could empirically provide a database for further research on other aspects of the performance of the workers exposed to cold air.
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نویسندگان مقاله | Keivan Saedpanah


| Mohsen Aliabadi


| Rostam Golmohammadi


| Majid Motamedzade


نشانی اینترنتی http://ijoh.tums.ac.ir/index.php/ijoh/article/view/377
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