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Introduction and purpose: The prevalence of musculoskeletal disorders in stressful jobs is very high. The people suffering from these disorders have low decision-making ability and perceived social support, while they have high physical and psychological job requirements. Regarding this, the present study was conducted with the aim of investigating the effect of waist and back pain on occupational stress. Methods: This descriptive cross-sectional study was conducted on 89 employees of Abadan Ports and Marine Administration in 2016. The study population was selected through random sampling method. The data were collected using Health and Safety Executive Management Standards Indicator and Body Discomfort Chart. Data analysis was performed using descriptive (i.e., frequency andpercentage) and inferential statistics (i.e., t-test) in SPSS version 18. Results: According to the findings, 50% and 31% of the participants had experienced waist and back pain, respectively. The highest and lowest stress levels in this study were related to role (77%) and communication (2.32%), respectively. The results of the t-test revealed a significant difference between the people with waist pain and those without such pain in terms of peer support, role, communication, and variations (P

Background and aims: The use of safety signs is one of the common methods of Informing and alerting the workers in relation whith type and severity of hazards in the workplace, These signs use to inform a person of danger And encourage him to do the protective measures. According to this, appropriate comprehension of safety signs in workplace is very important, The purpose of this study was evaluation of the perception of safety signs and related factors. Methods: This Analytical-Descriptive study was done in 2013-2014 for 3 provinces in industrial region of Khuzestan, Fars, and Tehran. Samples in this study were 370 workers of these states who werenchr('39')t colorblind., this study use a standard questionnaire from international organization standard (ISO 9186-1) and American National Standards Institute understanding Criteria of safety signs(ANSIZ535.3)also the questionnaire of demographic information were be used. 13 safety signs were utilized for determination of the perception. Stratified – Random sampling methods for sampling and statistical test of Chi-Squer for analyzing data were applied, by means of SPSS (ver.16) and excel software. Results: The results showed that comprehension of safety signs divided by province and according to standards ANSI Z535.3 and ISO3864, Most of the correspondence respectively with 76% and 92%, related to the province Khuzestan, also results showed that all safety signs have a significant relationship between the perception of signs and type of industry P

Objective(s): To study the knowledge, attitude and practice in breast feeding mothers in the field of physical activities and related factors on exercises.Methods: Tow hundred breast feeding mothers referring health and treatment centers of Tehran have been random selected from five centers through the questionnaire and their knowledge, attitude and related factors on exercise were studied. Regarding practice, Global physical activity questionnaire from World Health organization was used evaluating the three fields of work, exercise, leisure time, going from one place to another, level of physical activity. Data were analyzed using SPSS Statistical software after being collected.Results: According to the data from this research, 74.5% of mothers were highly aware while 80.5% had positive attitude toward exercising during lactation. In term of physical exercise only 14% were performing some type of sport activity. Regarding physical activity, 58% of the subjects had average physical activity among the total activities in all three fields. As well the study showed that the average physical activity among lactating mothers in the field of work was 38 min per day, going from one place to another using bicycle or walking for 15 min per day and 5 min per day of exercise in the field of sport activities.Among the most important factors of having no sport activity the reasons were having no enough time, having small children, giving no importance to sport activities and lack of exercise space for women respectively.Conclusion: However most of breast feeding mothers in this study had high knowledge and positive attitude toward the benefits of exercises during lactation, their activity level was so limited. So it is recommended that health employees, especially those in health and treatment centers should encourage mothers to perform and follow both health behaviors, namely exercise and breast feeding and arrange short term exercise plans for lactating mothers in post labor and lactation care services. Further researches on the effects of health training models on exercises in lactating mothers seem to be necessary.