Wanying Yang, Bo Li, Shusen Li, Yanlin Zhang, H. Yang
BACKGROUND Brush cutters are widely used in Chinese landscape gardening and agricultural laboring which leads the operators being exposed to many risks. Low back pain (LBP) is particularly common and can lead to substantial personal, community and financial burdens. The aim of the presented study was to measure the activity and function of each torso muscle of the operator when using the bush cutter, so as to evaluate the muscle injury of the operator during using several common brush cutters for different landscape tasks. MATERIAL AND METHODS The human postures of 6 workers using 2 types of brush cutters in the 3 working conditions were recorded and measured by using a surface electromyography (sEMG) system and a camera. The test results were compared by t-test and sign test. The effect of human posture on the sEMG signal of trunk muscles in different working condition were analyzed by ANOVA. RESULTS In the 3 working conditions, except for the left trapezius muscle, the muscle load of operating the backpack brush cutter is higher than that of operating side-mounted brush cutter. When operating the side-mounted backpack brush cutter, the force on both sides of the trapezius muscle is uneven, the load of the left trapezius muscle is >25%, and the maximum value is >30%. CONCLUSIONS The results highlighted significant differences in the effects of different working postures on the muscle activities of workers' trunk. Safe operation standards should therefore be taken to protect the exposed workers and to improve the industrial design of irrigation cutters to prevent the occurrence of occupational diseases. Med Pr. 2022;73(3).
{"title":"Muscle fatigue related to human posture using a brush cutter for landscape gardening: a preliminary study.","authors":"Wanying Yang, Bo Li, Shusen Li, Yanlin Zhang, H. Yang","doi":"10.13075/mp.5893.01175","DOIUrl":"https://doi.org/10.13075/mp.5893.01175","url":null,"abstract":"BACKGROUND\u0000Brush cutters are widely used in Chinese landscape gardening and agricultural laboring which leads the operators being exposed to many risks. Low back pain (LBP) is particularly common and can lead to substantial personal, community and financial burdens. The aim of the presented study was to measure the activity and function of each torso muscle of the operator when using the bush cutter, so as to evaluate the muscle injury of the operator during using several common brush cutters for different landscape tasks.\u0000\u0000\u0000MATERIAL AND METHODS\u0000The human postures of 6 workers using 2 types of brush cutters in the 3 working conditions were recorded and measured by using a surface electromyography (sEMG) system and a camera. The test results were compared by t-test and sign test. The effect of human posture on the sEMG signal of trunk muscles in different working condition were analyzed by ANOVA.\u0000\u0000\u0000RESULTS\u0000In the 3 working conditions, except for the left trapezius muscle, the muscle load of operating the backpack brush cutter is higher than that of operating side-mounted brush cutter. When operating the side-mounted backpack brush cutter, the force on both sides of the trapezius muscle is uneven, the load of the left trapezius muscle is >25%, and the maximum value is >30%.\u0000\u0000\u0000CONCLUSIONS\u0000The results highlighted significant differences in the effects of different working postures on the muscle activities of workers' trunk. Safe operation standards should therefore be taken to protect the exposed workers and to improve the industrial design of irrigation cutters to prevent the occurrence of occupational diseases. Med Pr. 2022;73(3).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41617201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BACKGROUND The level of health literacy possessed by an individual (functional, communicative, critical) determines their ability to effectively self-manage a chronic disease. The aim of the study was to assess the level and functional, communicative, and critical determinants of health literacy in the group of chronically ill older adults. MATERIAL AND METHODS The study was conducted on a representative sample of chronically ill people (N = 400) aged ≥65 years, living in Poland. Three levels of health literacy were measured on the basis of the Functional, Communicative and Critical Health Literacy scale (FCCHL), employed in Polish social research for the first time. RESULTS The conducted research showed that the average health literacy score of the surveyed older adults, measured on the basis of the FCCHL scale, was 2.81±0.71 (M±SD), whereas for the functional subscale of health literacy it was 3.06±0.58 (M±SD), for communicative health literacy it was 2.82±0.86 (M±SD), and for critical health literacy - 2.71±0.92 (M±SD). In terms of functional health literacy, the surveyed seniors most frequently reported problems with reading health-related information, resulting from the use of inadequate font size in information leaflets and brochures. Questions included in the subscale representing communicative health literacy revealed that the majority of the respondents understood the provided information about diseases, nevertheless they were reluctant to share thoughts about their health with other people. Within the framework of critical health literacy, one-third of the respondents did not search for any additional information, trusting that the information obtained was accurate and reliable. CONCLUSIONS The surveyed elderly people rated worse their level of communicative and critical health literacy compared to the functional level. As a consequence of the low level of communicative and critical health literacy of the surveyed older adults, a certain deficit in their self-managing a disease entity is forecast. Med Pr. 2022;73(3).
{"title":"Functional, communicative and critical health literacy among older Polish citizens.","authors":"Anna Mirczak","doi":"10.13075/mp.5893.01250","DOIUrl":"https://doi.org/10.13075/mp.5893.01250","url":null,"abstract":"BACKGROUND\u0000The level of health literacy possessed by an individual (functional, communicative, critical) determines their ability to effectively self-manage a chronic disease. The aim of the study was to assess the level and functional, communicative, and critical determinants of health literacy in the group of chronically ill older adults.\u0000\u0000\u0000MATERIAL AND METHODS\u0000The study was conducted on a representative sample of chronically ill people (N = 400) aged ≥65 years, living in Poland. Three levels of health literacy were measured on the basis of the Functional, Communicative and Critical Health Literacy scale (FCCHL), employed in Polish social research for the first time.\u0000\u0000\u0000RESULTS\u0000The conducted research showed that the average health literacy score of the surveyed older adults, measured on the basis of the FCCHL scale, was 2.81±0.71 (M±SD), whereas for the functional subscale of health literacy it was 3.06±0.58 (M±SD), for communicative health literacy it was 2.82±0.86 (M±SD), and for critical health literacy - 2.71±0.92 (M±SD). In terms of functional health literacy, the surveyed seniors most frequently reported problems with reading health-related information, resulting from the use of inadequate font size in information leaflets and brochures. Questions included in the subscale representing communicative health literacy revealed that the majority of the respondents understood the provided information about diseases, nevertheless they were reluctant to share thoughts about their health with other people. Within the framework of critical health literacy, one-third of the respondents did not search for any additional information, trusting that the information obtained was accurate and reliable.\u0000\u0000\u0000CONCLUSIONS\u0000The surveyed elderly people rated worse their level of communicative and critical health literacy compared to the functional level. As a consequence of the low level of communicative and critical health literacy of the surveyed older adults, a certain deficit in their self-managing a disease entity is forecast. Med Pr. 2022;73(3).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43275356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The pandemic caused a change in the way of providing healthcare services, limiting direct access to doctors, suspending planned treatments and medical consultations, but despite the risks and restrictions, the medical rescue system as a key element of health care for the society continues to function. The system provides medical assistance to patients in the most severe condition, both with a negative result for SARS-CoV-2, as well as with a positive or undiagnosed result. It is a review aimed at analyzing the most important psychological aspects of the work of emergency medical care system personnel during the COVID-19 pandemic. PubMed, Cochrane Library, and Google Scholar search were used to analyze the problem. The following keywords were used to search for information sources: paramedic, work, emergency medical care system, emergency department, ambulance service, COVID-19, pandemic, SARS-CoV-2, coronavirus. The articles were selected in terms of the psychological aspects of the work of the emergency medical care system personnel during the pandemic in 2020-2021. The psychosocial problems that come to the fore during a pandemic include increased levels of stress, anxiety, depression, burnout, emotional exhaustion, vicarious traumatization, and post-traumatic stress disorder. In the context of the increased risk of psychological problems due to pandemic, it is necessary to provide psychological support to the medical staff, both in terms of psychological support for the entire team and individually. Med Pr. 2022;73(3).
{"title":"Work in stressful conditions in medical emergency system during the COVID-19 pandemic.","authors":"Katarzyna Wojtysiak, Halina Zielińska-Więczkowska","doi":"10.13075/mp.5893.01178","DOIUrl":"https://doi.org/10.13075/mp.5893.01178","url":null,"abstract":"The pandemic caused a change in the way of providing healthcare services, limiting direct access to doctors, suspending planned treatments and medical consultations, but despite the risks and restrictions, the medical rescue system as a key element of health care for the society continues to function. The system provides medical assistance to patients in the most severe condition, both with a negative result for SARS-CoV-2, as well as with a positive or undiagnosed result. It is a review aimed at analyzing the most important psychological aspects of the work of emergency medical care system personnel during the COVID-19 pandemic. PubMed, Cochrane Library, and Google Scholar search were used to analyze the problem. The following keywords were used to search for information sources: paramedic, work, emergency medical care system, emergency department, ambulance service, COVID-19, pandemic, SARS-CoV-2, coronavirus. The articles were selected in terms of the psychological aspects of the work of the emergency medical care system personnel during the pandemic in 2020-2021. The psychosocial problems that come to the fore during a pandemic include increased levels of stress, anxiety, depression, burnout, emotional exhaustion, vicarious traumatization, and post-traumatic stress disorder. In the context of the increased risk of psychological problems due to pandemic, it is necessary to provide psychological support to the medical staff, both in terms of psychological support for the entire team and individually. Med Pr. 2022;73(3).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44294799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
between experienced and assigned gender that does not have to be associated with discomfort or suffering. However, the aspect of suffering is emphasized in the understanding of the diagnostic unit of gender dysphoria according to the DSM-5 of the American Psychiatric Association. People with gender incongruence are exposed to misunderstanding, persecution and stigmatization, often related to experienced minority stress. The aim of this study was to analyze the available literature in terms of the relationship between gender dysphoria and some mental disorders and minority stress, and to draw attention to the suffering of these people in the context of social confrontation with the phenomenon of gender transposition. The unfavorable image of a person with gender dysphoria created by some media, persecution and, as a result, bans on gender reassignment in some countries mean that a steady increase in mental disorders in these patients can be expected. The main psychiatric problems in people with gender dysphoria, accompanied by minority stress for most of their lives so far, concern the coexistence of depressive and anxiety disorders, self-destructive behaviors and the tendency to addiction. An important aspect of the functioning of people with gender dysphoria are also difficulties in taking up and maintaining employment, fear of losing income due to attempting to live in accordance with the perceived gender. The authors of the presented review wanted to emphasize the importance of minority stress in the lives of these people and the need for social education and a change in the approach to the concept of "employee," excluding the record gender from it, which - according to the authors - could help people with gender incompatibility in their working life by reducing minority stress. Med Pr. 2022;73(2).
{"title":"[Minority stress and selected mental disorders in people with gender dysphoria and gender incongruence - a narrative review].","authors":"M. Piegza, Patryk Główczyński","doi":"10.13075/mp.5893.01198","DOIUrl":"https://doi.org/10.13075/mp.5893.01198","url":null,"abstract":"between experienced and assigned gender that does not have to be associated with discomfort or suffering. However, the aspect of suffering is emphasized in the understanding of the diagnostic unit of gender dysphoria according to the DSM-5 of the American Psychiatric Association. People with gender incongruence are exposed to misunderstanding, persecution and stigmatization, often related to experienced minority stress. The aim of this study was to analyze the available literature in terms of the relationship between gender dysphoria and some mental disorders and minority stress, and to draw attention to the suffering of these people in the context of social confrontation with the phenomenon of gender transposition. The unfavorable image of a person with gender dysphoria created by some media, persecution and, as a result, bans on gender reassignment in some countries mean that a steady increase in mental disorders in these patients can be expected. The main psychiatric problems in people with gender dysphoria, accompanied by minority stress for most of their lives so far, concern the coexistence of depressive and anxiety disorders, self-destructive behaviors and the tendency to addiction. An important aspect of the functioning of people with gender dysphoria are also difficulties in taking up and maintaining employment, fear of losing income due to attempting to live in accordance with the perceived gender. The authors of the presented review wanted to emphasize the importance of minority stress in the lives of these people and the need for social education and a change in the approach to the concept of \"employee,\" excluding the record gender from it, which - according to the authors - could help people with gender incompatibility in their working life by reducing minority stress. Med Pr. 2022;73(2).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46851014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Zamysłowska-Szmytke, M. Janc, Krzysztof Ławnicki, M. Śliwińska-Kowalska
BACKGROUND The posturography test allows assessment of the entire function of balance system and quantitative, device-based verification of the clinical Romberg test. Therefore, the aim of this study is assessment of usefulness of posturography as primary test for balance disorders in occupational medicine. MATERIAL AND METHODS The study is cross-sectional, analyzing anonymous results of 1030 patients reporting dizziness and balance disorders. Based on symptoms, clinical examination and videonystagmography patients were classified into subgroups: benign paroxysmal positional vertigo (BPPV [N = 130]), non compensated (NS [N = 82]) and compensated (S [N = 174]) peripheral vestibular, bilateral vestibular (BV [N = 63]), Ménière's disease (MD [N = 53]), central dizziness (central [N = 293]), migraine (migr. [N = 132]), psychogenic dizziness (psychog. [N = 232]), Persistent postural-perceptual dizziness (PPPD [N = 150]). Besides, 129 healthy people were included in the study. RESULTS Ninety nine percent of abnormal static posturography (SP) and 94% of abnormal dynamic posturography (PD) results were found in diseased patients. Normal results were found both in healthy group (59% PS, 67% PD) and in diseased group (24% PS, 31% PD). Static posturography's abnormal results were more frequent in NS, BV and PPPD patients. In PD the differences were visible in the central, psychog. and PPPD subgroups. In NS subgroup the high negative predictive values of static and dynamic tests (82-87%) were calculated in relation to caloric test. CONCLUSIONS Static tests are the basic test used in examinations of employees for occupational medicine purposes. Posturography is a quantitative record of sways in relation to normative values. Abnormal posturography results most likely indicate the presence of pathologies of the balance system, including psychofunctional disorders. Normal posturography results do not indicate the lack of pathology of balance system what should be included in the work ability assessment. Med Pr. 2022;73(2).
{"title":"[Use of the posturography in balance system evaluation in occupational medicine].","authors":"E. Zamysłowska-Szmytke, M. Janc, Krzysztof Ławnicki, M. Śliwińska-Kowalska","doi":"10.13075/mp.5893.01164","DOIUrl":"https://doi.org/10.13075/mp.5893.01164","url":null,"abstract":"BACKGROUND\u0000The posturography test allows assessment of the entire function of balance system and quantitative, device-based verification of the clinical Romberg test. Therefore, the aim of this study is assessment of usefulness of posturography as primary test for balance disorders in occupational medicine.\u0000\u0000\u0000MATERIAL AND METHODS\u0000The study is cross-sectional, analyzing anonymous results of 1030 patients reporting dizziness and balance disorders. Based on symptoms, clinical examination and videonystagmography patients were classified into subgroups: benign paroxysmal positional vertigo (BPPV [N = 130]), non compensated (NS [N = 82]) and compensated (S [N = 174]) peripheral vestibular, bilateral vestibular (BV [N = 63]), Ménière's disease (MD [N = 53]), central dizziness (central [N = 293]), migraine (migr. [N = 132]), psychogenic dizziness (psychog. [N = 232]), Persistent postural-perceptual dizziness (PPPD [N = 150]). Besides, 129 healthy people were included in the study.\u0000\u0000\u0000RESULTS\u0000Ninety nine percent of abnormal static posturography (SP) and 94% of abnormal dynamic posturography (PD) results were found in diseased patients. Normal results were found both in healthy group (59% PS, 67% PD) and in diseased group (24% PS, 31% PD). Static posturography's abnormal results were more frequent in NS, BV and PPPD patients. In PD the differences were visible in the central, psychog. and PPPD subgroups. In NS subgroup the high negative predictive values of static and dynamic tests (82-87%) were calculated in relation to caloric test.\u0000\u0000\u0000CONCLUSIONS\u0000Static tests are the basic test used in examinations of employees for occupational medicine purposes. Posturography is a quantitative record of sways in relation to normative values. Abnormal posturography results most likely indicate the presence of pathologies of the balance system, including psychofunctional disorders. Normal posturography results do not indicate the lack of pathology of balance system what should be included in the work ability assessment. Med Pr. 2022;73(2).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42149422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BACKGROUND Silesia is one of the regions in Poland most affected by the COVID-19 epidemic. The high number of infections among the inhabitants of the region increases the already high risk of infection of SARS-CoV-2 virus of medical workers who, due to their work, are more likely to be exposed to people with SARS-CoV-2 than people from the general population. The aim of this study is to assess the prevalence of SARS-CoV-2 infection among healthcare workers in the Upper Silesia Metropolitan Area based on the results of a seroepidemiological study. MATERIAL AND METHODS The seroepidemiological study was carried out in October- November 2020 among the inhabitants of the Upper Silesia Metropolitan Area (including medical professionals who were selected, creating a research group of healthcare workers). Apart from the questionnaire examination necessary to determine the declared symptoms, circumstances and risk factors conducive to infection, the level of specific antibodies against the SARS-CoV-2 virus in the IgG and IgM class was assessed. RESULTS In the study participated 575 people declaring their medical profession. A positive test for the presence of IgG antibodies was confirmed in 19.1% of the respondents, while a positive test for IgM concerned 4.3% of the subjects. The most common positive results indicating infection with the SARS-CoV-2 virus concerned people declaring prior contact with an infected person (p = 0.001) and those undergoing quarantine (p < 0.0001). CONCLUSIONS The frequency of SARS-CoV-2 virus infections in medical personnel in the Upper Silesia Metropolitan Area, assessed on the basis of a positive IgG antibody test result, was 16.1-22.5%. Med Pr. 2022;73(2).
{"title":"[The frequency of positive results of serological tests against SARS-CoV-2 in healthcare workers in Upper Silesia Metropolitan Area, Poland].","authors":"M. Wojczyk, M. Kowalska","doi":"10.13075/mp.5893.01221","DOIUrl":"https://doi.org/10.13075/mp.5893.01221","url":null,"abstract":"BACKGROUND\u0000Silesia is one of the regions in Poland most affected by the COVID-19 epidemic. The high number of infections among the inhabitants of the region increases the already high risk of infection of SARS-CoV-2 virus of medical workers who, due to their work, are more likely to be exposed to people with SARS-CoV-2 than people from the general population. The aim of this study is to assess the prevalence of SARS-CoV-2 infection among healthcare workers in the Upper Silesia Metropolitan Area based on the results of a seroepidemiological study.\u0000\u0000\u0000MATERIAL AND METHODS\u0000The seroepidemiological study was carried out in October- November 2020 among the inhabitants of the Upper Silesia Metropolitan Area (including medical professionals who were selected, creating a research group of healthcare workers). Apart from the questionnaire examination necessary to determine the declared symptoms, circumstances and risk factors conducive to infection, the level of specific antibodies against the SARS-CoV-2 virus in the IgG and IgM class was assessed.\u0000\u0000\u0000RESULTS\u0000In the study participated 575 people declaring their medical profession. A positive test for the presence of IgG antibodies was confirmed in 19.1% of the respondents, while a positive test for IgM concerned 4.3% of the subjects. The most common positive results indicating infection with the SARS-CoV-2 virus concerned people declaring prior contact with an infected person (p = 0.001) and those undergoing quarantine (p < 0.0001).\u0000\u0000\u0000CONCLUSIONS\u0000The frequency of SARS-CoV-2 virus infections in medical personnel in the Upper Silesia Metropolitan Area, assessed on the basis of a positive IgG antibody test result, was 16.1-22.5%. Med Pr. 2022;73(2).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45363638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BACKGROUND Resorcinol (1,3-dihydroxybenzene) is a white solid used in rubber, pharmaceuticals, cosmetics, paints and varnishes and other industries. Resorcinol is a harmful, irritant, methemoglobin-forming and hemolytic substance. It can cause kidney and liver damage. The aim of the study was to develop a method for the determination of resorcinol in the workplace air, which would enable the determination of its concentrations in the range 0.1-2 of the MAC (maximum allowable concentration) value. MATERIAL AND METHODS The method relies on passing the test air containing resorcinol through a cellulose filter, extraction with aqueous methanol solution and chromatographic analysis of the obtained solution. The tests were performed using a liquid chromatograph (HPLC) 1200 series of Agilent Technologies with a diode array detector (DAD). The determinations were carried out using an Allure Basix column (250 × 4.6 mm, 5 μm granulation). The procedure was validated according to European Standard PN-EN 482. RESULTS The developed method allows the determination of resorcinol in the workplace air in the concentration range of 4.5-90 mg/m3. The limit of detection is 0.087 μg/ml, the precision 5.16% and the relative expanded uncertainty 22.6%. The method described enables selective determination of resorcinol in workplace air in the presence of 1,2-dihydroxybenzene, 1,4-dihydroxybenzene, benzene and phenol. CONCLUSIONS The method is characterized by good precision and accuracy; it meets the requirements of the European Standard PN-EN 482, and can be used by occupational hygiene laboratories to measure concentrations of resorcinol in workplace air to assess workers' exposure to this substance. Med Pr. 2022;73(2).
{"title":"[Resorcinol - determination method in the workplace air].","authors":"A. Jeżewska, D. Kondej","doi":"10.13075/mp.5893.01150","DOIUrl":"https://doi.org/10.13075/mp.5893.01150","url":null,"abstract":"BACKGROUND\u0000Resorcinol (1,3-dihydroxybenzene) is a white solid used in rubber, pharmaceuticals, cosmetics, paints and varnishes and other industries. Resorcinol is a harmful, irritant, methemoglobin-forming and hemolytic substance. It can cause kidney and liver damage. The aim of the study was to develop a method for the determination of resorcinol in the workplace air, which would enable the determination of its concentrations in the range 0.1-2 of the MAC (maximum allowable concentration) value.\u0000\u0000\u0000MATERIAL AND METHODS\u0000The method relies on passing the test air containing resorcinol through a cellulose filter, extraction with aqueous methanol solution and chromatographic analysis of the obtained solution. The tests were performed using a liquid chromatograph (HPLC) 1200 series of Agilent Technologies with a diode array detector (DAD). The determinations were carried out using an Allure Basix column (250 × 4.6 mm, 5 μm granulation). The procedure was validated according to European Standard PN-EN 482.\u0000\u0000\u0000RESULTS\u0000The developed method allows the determination of resorcinol in the workplace air in the concentration range of 4.5-90 mg/m3. The limit of detection is 0.087 μg/ml, the precision 5.16% and the relative expanded uncertainty 22.6%. The method described enables selective determination of resorcinol in workplace air in the presence of 1,2-dihydroxybenzene, 1,4-dihydroxybenzene, benzene and phenol.\u0000\u0000\u0000CONCLUSIONS\u0000The method is characterized by good precision and accuracy; it meets the requirements of the European Standard PN-EN 482, and can be used by occupational hygiene laboratories to measure concentrations of resorcinol in workplace air to assess workers' exposure to this substance. Med Pr. 2022;73(2).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46328016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BACKGROUND The cabin of the manned submersible is a narrow and sealed space. The long-time work of oceanauts is easy to cause muscle fatigue and stiffness, which reduces efficiency. This paper explored the relative more effective way to relieve leg muscle fatigue of the oceanauts in the manned submersible. MATERIAL AND METHODS Twenty healthy young people with an average age of 24 years were selected as the participants, while the usual natural relaxation and the stretching method proposed by the surveys were selected as the relieve method for muscle fatigue. This study compared the effects of the 2 recovery ways using the electromyography data from the quadriceps femoris and biceps femoris, and the subjective scales. RESULTS With the support of data of integral electromyogram (iEMG), root-mean-square (RMS), subjective scales, authors finally found that the 2 muscles of the leg are fatigued significantly, and biceps femoris has more accumulation of fatigue. Although the 2 recovery ways have a significant relief effect on muscle fatigue, the stretching method can reduce more muscle fatigue in a short period of time, especially for biceps femoris. The stretching method is advocated for the oceanauts. CONCLUSIONS The findings suggested that the stretching method was optimal for relieving the muscle fatigue of the oceanauts during the operation. Med Pr. 2022;73(2).
{"title":"Effects of two recovery methods on the leg muscle fatigue of oceanauts in a manned submersible.","authors":"Dengkai Chen, Mengya Zhu, Yu Fan, Jingluan Wang","doi":"10.13075/mp.5893.01211","DOIUrl":"https://doi.org/10.13075/mp.5893.01211","url":null,"abstract":"BACKGROUND\u0000The cabin of the manned submersible is a narrow and sealed space. The long-time work of oceanauts is easy to cause muscle fatigue and stiffness, which reduces efficiency. This paper explored the relative more effective way to relieve leg muscle fatigue of the oceanauts in the manned submersible.\u0000\u0000\u0000MATERIAL AND METHODS\u0000Twenty healthy young people with an average age of 24 years were selected as the participants, while the usual natural relaxation and the stretching method proposed by the surveys were selected as the relieve method for muscle fatigue. This study compared the effects of the 2 recovery ways using the electromyography data from the quadriceps femoris and biceps femoris, and the subjective scales.\u0000\u0000\u0000RESULTS\u0000With the support of data of integral electromyogram (iEMG), root-mean-square (RMS), subjective scales, authors finally found that the 2 muscles of the leg are fatigued significantly, and biceps femoris has more accumulation of fatigue. Although the 2 recovery ways have a significant relief effect on muscle fatigue, the stretching method can reduce more muscle fatigue in a short period of time, especially for biceps femoris. The stretching method is advocated for the oceanauts.\u0000\u0000\u0000CONCLUSIONS\u0000The findings suggested that the stretching method was optimal for relieving the muscle fatigue of the oceanauts during the operation. Med Pr. 2022;73(2).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43169853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Rosińska, Małgorzata Stępień, Wioleta Kitowska, M. Milczarek, G. Juszczyk, Zuzanna Nowacka, Aneta Gardel, Adam Hermann, Aneta Bardoń-Błaszkowska, R. Cudnik, Hanna Czubak, Magdalena Wolniak-Bińkowska, Izabella Anna Źródłowska, M. Sadkowska-Todys
BACKGROUND The aim of the study was to assess seroprevalence of anti-SARS-CoV-2 antibodies among healthcare workers (HCW) before introduction of vaccination, in selected areas in Poland as well as to identify potential risk factors and estimate the cumulative incidence of COVID-19 infections in this population. MATERIAL AND METHODS The authors conducted a sero-epidemiological, cross-sectional study among HCW of 5 non-COVID-19 hospitals in Poland. The recruitment took place in December 1-23, 2020, all HCW at selected hospitals could volunteer into the study. All persons were screened with rapid SARS-CoV-2 IgM/IgG tests in capillary blood. In case of positive result, 5 ml of venous blood was drawn for confirmatory testing with ELISA assay. The authors estimated prevalence of laboratory confirmed anti-SARS-CoV-2 antibody presence and examined factors associated with positive result. Cumulative incidence was estimated applying 2-source capture-recapture method to serology results and self-report of past infection. RESULTS Out of 1040 HCW included in the analysis, one-fourth (25.2%) received a positive result for anti-SARS-CoV-2 antibodies by ELISA test, the prevalence among women was 25.3% (95% CI: 22.5-28.4) and 24.6% (95% CI: 19-31.2) among men. The prevalence of anti-SARS-CoV-2 antibodies was the highest among respondents who declared home contact with a confirmed COVID-19 case, 43.9% (95% CI: 32.4-56.1). It was also elevated among those who indicated contact with patients with COVID-19, 32.5% (95% CI: 26.7-38.8) and business contacts, including at the workplace, 28.9% (95% CI: 22.5-36.3). The estimated cumulative incidence of COVID-19 infections in the population, using the capture-recapture method was 41.2% (95% CI: 38.1-44.2). CONCLUSIONS Healthcare workers remained at increased risk of infection largely due to work-related contacts with infected patients, although home exposure was also common. Estimated cumulative incidence is higher than the antibody prevalence, which indicates the need to monitor HCW for possible immunity waning, also post-immunization immunity. Med Pr. 2022;73(2).
{"title":"Healthcare workers highly affected during the COVID-19 epidemic wave in Poland prior to vaccination availability: seroprevalence study.","authors":"M. Rosińska, Małgorzata Stępień, Wioleta Kitowska, M. Milczarek, G. Juszczyk, Zuzanna Nowacka, Aneta Gardel, Adam Hermann, Aneta Bardoń-Błaszkowska, R. Cudnik, Hanna Czubak, Magdalena Wolniak-Bińkowska, Izabella Anna Źródłowska, M. Sadkowska-Todys","doi":"10.13075/mp.5893.01216","DOIUrl":"https://doi.org/10.13075/mp.5893.01216","url":null,"abstract":"BACKGROUND\u0000The aim of the study was to assess seroprevalence of anti-SARS-CoV-2 antibodies among healthcare workers (HCW) before introduction of vaccination, in selected areas in Poland as well as to identify potential risk factors and estimate the cumulative incidence of COVID-19 infections in this population.\u0000\u0000\u0000MATERIAL AND METHODS\u0000The authors conducted a sero-epidemiological, cross-sectional study among HCW of 5 non-COVID-19 hospitals in Poland. The recruitment took place in December 1-23, 2020, all HCW at selected hospitals could volunteer into the study. All persons were screened with rapid SARS-CoV-2 IgM/IgG tests in capillary blood. In case of positive result, 5 ml of venous blood was drawn for confirmatory testing with ELISA assay. The authors estimated prevalence of laboratory confirmed anti-SARS-CoV-2 antibody presence and examined factors associated with positive result. Cumulative incidence was estimated applying 2-source capture-recapture method to serology results and self-report of past infection.\u0000\u0000\u0000RESULTS\u0000Out of 1040 HCW included in the analysis, one-fourth (25.2%) received a positive result for anti-SARS-CoV-2 antibodies by ELISA test, the prevalence among women was 25.3% (95% CI: 22.5-28.4) and 24.6% (95% CI: 19-31.2) among men. The prevalence of anti-SARS-CoV-2 antibodies was the highest among respondents who declared home contact with a confirmed COVID-19 case, 43.9% (95% CI: 32.4-56.1). It was also elevated among those who indicated contact with patients with COVID-19, 32.5% (95% CI: 26.7-38.8) and business contacts, including at the workplace, 28.9% (95% CI: 22.5-36.3). The estimated cumulative incidence of COVID-19 infections in the population, using the capture-recapture method was 41.2% (95% CI: 38.1-44.2).\u0000\u0000\u0000CONCLUSIONS\u0000Healthcare workers remained at increased risk of infection largely due to work-related contacts with infected patients, although home exposure was also common. Estimated cumulative incidence is higher than the antibody prevalence, which indicates the need to monitor HCW for possible immunity waning, also post-immunization immunity. Med Pr. 2022;73(2).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46735488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The prevalence of bladder cancer (BCa) is 4 times higher in men as compared to women, and gender differences have been the focus of attention for few years. Androgen receptor (AR) may be a putative explanation for gender differences. It may also be related to unfavourable BCa progression and development because of the increased androgen sensitivity of urothelium to carcinogens. Moreover, cigarette smoking and occupational exposure to carcinogens have been reported to play contributory roles with the highest attributable risk of BCa. In this review, the authors attempt to summarize the seminal research works that synthesized current understanding of the central role of AR in the negative regulation of carcinogen detoxification activity in BCa. In particular, the authors discuss the regulatory effects of 3,3'-diindolylmethane on AR gene transcription through microRNA as its suggested effect on the prevention of BCa. Moreover, to show the still existing problem of occupational exposure and BCa incidence, the authors review recent studies in this area. Based on the rapidly accumulating scientific evidence, it seems pragmatic that androgen/AR-mediated interference in the detoxification mechanism may be inhibited by phytochemicals. Therefore, collectively, nutrition has a key role as gene-nutrient interactions are important contributors to BCa prevention, also through epigenetic modifications. Here, the authors have derived suggestions for future research. Med Pr. 2022;73(2).
{"title":"Androgen receptor modulation and bladder cancer prevention - a short review.","authors":"E. Wieczorek, A. Farooqi, E. Reszka","doi":"10.13075/mp.5893.01229","DOIUrl":"https://doi.org/10.13075/mp.5893.01229","url":null,"abstract":"The prevalence of bladder cancer (BCa) is 4 times higher in men as compared to women, and gender differences have been the focus of attention for few years. Androgen receptor (AR) may be a putative explanation for gender differences. It may also be related to unfavourable BCa progression and development because of the increased androgen sensitivity of urothelium to carcinogens. Moreover, cigarette smoking and occupational exposure to carcinogens have been reported to play contributory roles with the highest attributable risk of BCa. In this review, the authors attempt to summarize the seminal research works that synthesized current understanding of the central role of AR in the negative regulation of carcinogen detoxification activity in BCa. In particular, the authors discuss the regulatory effects of 3,3'-diindolylmethane on AR gene transcription through microRNA as its suggested effect on the prevention of BCa. Moreover, to show the still existing problem of occupational exposure and BCa incidence, the authors review recent studies in this area. Based on the rapidly accumulating scientific evidence, it seems pragmatic that androgen/AR-mediated interference in the detoxification mechanism may be inhibited by phytochemicals. Therefore, collectively, nutrition has a key role as gene-nutrient interactions are important contributors to BCa prevention, also through epigenetic modifications. Here, the authors have derived suggestions for future research. Med Pr. 2022;73(2).","PeriodicalId":18749,"journal":{"name":"Medycyna pracy","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48474511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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