Mário Vaz - Academia.edu (original) (raw)

Papers by Mário Vaz

U.Porto Journal of Engineering, 2018

Aim: The purpose of this systematic literature review is to check papers to find the best method ... more Aim: The purpose of this systematic literature review is to check papers to find the best method for measuring association between health interventions and productivity and find best intervention in workplace for increasing productivity.Method: This systematic review was performed based on PRISMA statement methodology and performed on all papers about association between productivity with intervention for increasing physical activity, published from 2007 until June 2017. The search was limited to English language items.Conclusion: The results of this systematic review demonstrate that providing interventions for workers in various workplaces have a low to high affecting on productivity, as measured by objective and organization specific metrics or subjective and self-report questionnaires. The Analyze of result showed that using different methods simultaneously can make more accuracy and precision. Also it’s better that before filling the self-report questionnaires researchers train...

Cureus

Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body o... more Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body over the adjacent inferior vertebral body, secondary to a defect in the pars interarticularis. This paper reports two cases of young acrobatic gymnasts who presented with long-term, progressive lumbosciatic pain and lower limb dysesthesia. One gymnast presented with additional neurogenic bladder dysfunction. Diagnostic testing revealed L5-S1 spondylolisthesis due to bilateral isthmic lysis in both gymnasts. Both underwent L4-S2 fixation followed by L5-S1 transdiscal arthrodesis with Rialto sacroiliac fusion system (Medtronic ® , Minneapolis, MN, USA). Favorable evolution of neuromotor symptoms was observed after rehabilitation, with less residual neurological impairment in the case of higher-grade spondylolisthesis. This case series aims to emphasize the importance of recognizing this pathology in athletes as well as its correct management. Early surgical intervention can prevent the onset and progression of neurological deficits.

Cureus

Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body o... more Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body over the adjacent inferior vertebral body, secondary to a defect in the pars interarticularis. This paper reports two cases of young acrobatic gymnasts who presented with long-term, progressive lumbosciatic pain and lower limb dysesthesia. One gymnast presented with additional neurogenic bladder dysfunction. Diagnostic testing revealed L5-S1 spondylolisthesis due to bilateral isthmic lysis in both gymnasts. Both underwent L4-S2 fixation followed by L5-S1 transdiscal arthrodesis with Rialto sacroiliac fusion system (Medtronic ® , Minneapolis, MN, USA). Favorable evolution of neuromotor symptoms was observed after rehabilitation, with less residual neurological impairment in the case of higher-grade spondylolisthesis. This case series aims to emphasize the importance of recognizing this pathology in athletes as well as its correct management. Early surgical intervention can prevent the onset and progression of neurological deficits.

Studies in systems, decision and control, Sep 17, 2022

Studies in systems, decision and control, Sep 17, 2022

Studies in systems, decision and control, Sep 17, 2022

Studies in systems, decision and control, Sep 17, 2022

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave w... more Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave work. In a historical period of incipient mechanization, the main sources of energy used from the transportation to the activation of the available rudimentary equipment, were of animal origin, among them the Man. The enslaved workers spent their energy performing tasks using, in most cases, only hand tools, such as axes, scythes and hoes. Human strength was the only source of available energy for the more elaborated activities that could not be done by animals. These activities ranged from deforestation to digging, from planting to weeding or harvesting. This research aimed to obtain a detailed and descriptive framework of energy replacement conditions of slave labour, through a review of historical sources and contemporary studies. Methodology: Six databases were searched with timeframe after 2014, as well as original historical documents. A snowballing approach allowed finding references before 2014. The studies were selected without language restrictions. The quantification of energy recovery was done based on quantity, quality and type of served food; the energy value of those foods; and the average of slaves' energy expenditure in rural activities. Results: The searches in the six databases provided initially 36,355 articles. After screening and analysing all this information, 16 were included: 6 articles, 5 books and 5 rare books. DISCUSSION: The selected studies classified slaves' feeding as insufficient to energy replacement, of low quality and classified as bulk feed by the researchers, that is, it consisted of low-quality foods and its preparation was carried out carelessly as regards hygiene, ways of cooking or seasoning. This diet was repeated daily, leading to the occurrence of digestive system diseases. The difference between the average daily energy expenditure and the replacement of this energy using the supply provided by the slave owners, was also significant. The reduction of this difference was fundamental to human labour and was supplied in different ways. A rather usual one was an increase in the regular supply of alcoholic beverages conclusions: The analysed studies suggest the existence of precarious and similar energy replacement conditions, among the slaves in the different regions of Brazil.

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave w... more Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave work. In a historical period of incipient mechanization, the main sources of energy used from the transportation to the activation of the available rudimentary equipment, were of animal origin, among them the Man. The enslaved workers spent their energy performing tasks using, in most cases, only hand tools, such as axes, scythes and hoes. Human strength was the only source of available energy for the more elaborated activities that could not be done by animals. These activities ranged from deforestation to digging, from planting to weeding or harvesting. This research aimed to obtain a detailed and descriptive framework of energy replacement conditions of slave labour, through a review of historical sources and contemporary studies. Methodology: Six databases were searched with timeframe after 2014, as well as original historical documents. A snowballing approach allowed finding references before 2014. The studies were selected without language restrictions. The quantification of energy recovery was done based on quantity, quality and type of served food; the energy value of those foods; and the average of slaves' energy expenditure in rural activities. Results: The searches in the six databases provided initially 36,355 articles. After screening and analysing all this information, 16 were included: 6 articles, 5 books and 5 rare books. DISCUSSION: The selected studies classified slaves' feeding as insufficient to energy replacement, of low quality and classified as bulk feed by the researchers, that is, it consisted of low-quality foods and its preparation was carried out carelessly as regards hygiene, ways of cooking or seasoning. This diet was repeated daily, leading to the occurrence of digestive system diseases. The difference between the average daily energy expenditure and the replacement of this energy using the supply provided by the slave owners, was also significant. The reduction of this difference was fundamental to human labour and was supplied in different ways. A rather usual one was an increase in the regular supply of alcoholic beverages conclusions: The analysed studies suggest the existence of precarious and similar energy replacement conditions, among the slaves in the different regions of Brazil.

International journal of occupational medicine and environmental health, Jan 8, 2017

Reliable and valid instruments are essential for understanding fatigue in occupational settings. ... more Reliable and valid instruments are essential for understanding fatigue in occupational settings. This study analyzed the psychometric properties of the Portuguese version of the Swedish Occupational Fatigue Inventory (SOFI). A cross-sectional study was conducted with 218 workers from an automotive industry involved in assembly tasks for fabrication of mechanical cables. Convergent and discriminant validity, internal consistency reliability and confirmatory factor analysis were performed. Results showed adequate fit to data, yielding a 20-item, 5-factor structure (all intercorrelated): Chi²/df (ratio Chi² and degrees of freedom) = 2.530, confirmatory fit index (CFI) = 0.919, goodness of fit index (GFI) = 0.845, root mean square error of approximation (RMSEA) = 0.084. The SOFI presented an adequate internal consistency, with the sub-scales and total scale presenting good reliability values (Cronbach's α values from 0.742 to 0.903 and 0...

Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, ... more Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, due to the existence of concrete between the flanges. The aim of this study is to develop a new proposal for the calculation of the buckling strength of partially encased columns, embedded on walls, under fire conditions. This proposal is based on the current calculation method proposed in Annex G of EN 1994-1-2. This study uses the finite element method to calculate the average temperature of seven components. The average temperature is then used to find the buckling resistance of composite columns when submitted to fire from one side. This solution method is carried out using 30 different cross sections. All cross sections are exposed to the standard fire curve ISO834 from one side, assuming the specific fire rating of 30, 60, 90 and 120 min.

Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, ... more Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, due to the existence of concrete between the flanges. The aim of this study is to develop a new proposal for the calculation of the buckling strength of partially encased columns, embedded on walls, under fire conditions. This proposal is based on the current calculation method proposed in Annex G of EN 1994-1-2. This study uses the finite element method to calculate the average temperature of seven components. The average temperature is then used to find the buckling resistance of composite columns when submitted to fire from one side. This solution method is carried out using 30 different cross sections. All cross sections are exposed to the standard fire curve ISO834 from one side, assuming the specific fire rating of 30, 60, 90 and 120 min.

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical ... more Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical activity (PA). There is growing evidence that prolonged sitting is associated with multiple health risks, including musculoskeletal disorders, biomarkers of increased cardiovascular diseases, some forms of cancer. There is an increasing interest in changing the work environment by implementing various interventions to reduce barriers and promote physical activity. The aim of this short review is to identify factors that affected workers' SB and/or PA to design appropriate interventions. Methodology The search was performed based on PRISMA statement methodology and was conducted in Scopus for articles and reviews published in scientific journals from 2010 until 2019 in English, using a set of root keywords as "sedentary work," "physical activity" and "effectiveness intervention". Results and discussion the review included 12 studies describing effective factors on PA in three categories: organizational factor, individual factor, and social factor. The main organizational factors found were: supportive workplace policies and resources, time for involvement in intervention, paying for activity, management support, work environment factors, and job type (passive jobs, and high-strain jobs). Interpersonal factors, knowledge include (educational level and information about physical activity guidelines) and some sociodemographic factors as individual factors associated with the physical work activity. Furthermore, social factors like social support and social norm have a significant effect on willing to do physical activity in workers. Some studies used "behavior change techniques" to find effective factors on physical activity for identifying the most appropriate interventions. Conclusion: Current evidence demonstrates that some individual, organizational and social factors influence work physical activity; therefore, they need to be considered in each population specifically, before choosing the intervention type. It can contribute to the increasing effectiveness of interventions intended to improve physical activity. Future research in this area should consider the association of various factors identified to enhance the effectiveness of interventions.

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical ... more Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical activity (PA). There is growing evidence that prolonged sitting is associated with multiple health risks, including musculoskeletal disorders, biomarkers of increased cardiovascular diseases, some forms of cancer. There is an increasing interest in changing the work environment by implementing various interventions to reduce barriers and promote physical activity. The aim of this short review is to identify factors that affected workers' SB and/or PA to design appropriate interventions. Methodology The search was performed based on PRISMA statement methodology and was conducted in Scopus for articles and reviews published in scientific journals from 2010 until 2019 in English, using a set of root keywords as "sedentary work," "physical activity" and "effectiveness intervention". Results and discussion the review included 12 studies describing effective factors on PA in three categories: organizational factor, individual factor, and social factor. The main organizational factors found were: supportive workplace policies and resources, time for involvement in intervention, paying for activity, management support, work environment factors, and job type (passive jobs, and high-strain jobs). Interpersonal factors, knowledge include (educational level and information about physical activity guidelines) and some sociodemographic factors as individual factors associated with the physical work activity. Furthermore, social factors like social support and social norm have a significant effect on willing to do physical activity in workers. Some studies used "behavior change techniques" to find effective factors on physical activity for identifying the most appropriate interventions. Conclusion: Current evidence demonstrates that some individual, organizational and social factors influence work physical activity; therefore, they need to be considered in each population specifically, before choosing the intervention type. It can contribute to the increasing effectiveness of interventions intended to improve physical activity. Future research in this area should consider the association of various factors identified to enhance the effectiveness of interventions.

Modern changes in communication, transportation, domestic-intertainment technologies and workplac... more Modern changes in communication, transportation, domestic-intertainment technologies and workplaces are related to a substantial increase of sedentary living.This review was performed to summarize and analyze the studies investigating the impact of decreasing work sedentary time and implementing active workstations to improve work performance. This review was based on relevant articles published in Scopus, Medline, and Web of science from 2007 until 2017. The results of this brief review indicate statistically significant relationships between several interventions for increasing physical activity and employee work performance. Type of intervention and implementation procedure were identified as factors that can determine effects on the job performance. Some studies have shown interventions with positive influence on productivity, others suggest that it is feasible to implement a multi-component intervention such as Stand Up desk with high fidelity with no perceived decrease in productivity. In conclusion, more field studies are necessary to determine work performance and acceptance of dynamic workstations in a real work environment.info:eu-repo/semantics/publishedVersio

Modern changes in communication, transportation, domestic-intertainment technologies and workplac... more Modern changes in communication, transportation, domestic-intertainment technologies and workplaces are related to a substantial increase of sedentary living.This review was performed to summarize and analyze the studies investigating the impact of decreasing work sedentary time and implementing active workstations to improve work performance. This review was based on relevant articles published in Scopus, Medline, and Web of science from 2007 until 2017. The results of this brief review indicate statistically significant relationships between several interventions for increasing physical activity and employee work performance. Type of intervention and implementation procedure were identified as factors that can determine effects on the job performance. Some studies have shown interventions with positive influence on productivity, others suggest that it is feasible to implement a multi-component intervention such as Stand Up desk with high fidelity with no perceived decrease in productivity. In conclusion, more field studies are necessary to determine work performance and acceptance of dynamic workstations in a real work environment.info:eu-repo/semantics/publishedVersio

U.Porto Journal of Engineering, 2018

Aim: The purpose of this systematic literature review is to check papers to find the best method ... more Aim: The purpose of this systematic literature review is to check papers to find the best method for measuring association between health interventions and productivity and find best intervention in workplace for increasing productivity.Method: This systematic review was performed based on PRISMA statement methodology and performed on all papers about association between productivity with intervention for increasing physical activity, published from 2007 until June 2017. The search was limited to English language items.Conclusion: The results of this systematic review demonstrate that providing interventions for workers in various workplaces have a low to high affecting on productivity, as measured by objective and organization specific metrics or subjective and self-report questionnaires. The Analyze of result showed that using different methods simultaneously can make more accuracy and precision. Also it’s better that before filling the self-report questionnaires researchers train...

Cureus

Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body o... more Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body over the adjacent inferior vertebral body, secondary to a defect in the pars interarticularis. This paper reports two cases of young acrobatic gymnasts who presented with long-term, progressive lumbosciatic pain and lower limb dysesthesia. One gymnast presented with additional neurogenic bladder dysfunction. Diagnostic testing revealed L5-S1 spondylolisthesis due to bilateral isthmic lysis in both gymnasts. Both underwent L4-S2 fixation followed by L5-S1 transdiscal arthrodesis with Rialto sacroiliac fusion system (Medtronic ® , Minneapolis, MN, USA). Favorable evolution of neuromotor symptoms was observed after rehabilitation, with less residual neurological impairment in the case of higher-grade spondylolisthesis. This case series aims to emphasize the importance of recognizing this pathology in athletes as well as its correct management. Early surgical intervention can prevent the onset and progression of neurological deficits.

Cureus

Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body o... more Isthmic spondylolisthesis is a condition characterized by the subluxation of one vertebral body over the adjacent inferior vertebral body, secondary to a defect in the pars interarticularis. This paper reports two cases of young acrobatic gymnasts who presented with long-term, progressive lumbosciatic pain and lower limb dysesthesia. One gymnast presented with additional neurogenic bladder dysfunction. Diagnostic testing revealed L5-S1 spondylolisthesis due to bilateral isthmic lysis in both gymnasts. Both underwent L4-S2 fixation followed by L5-S1 transdiscal arthrodesis with Rialto sacroiliac fusion system (Medtronic ® , Minneapolis, MN, USA). Favorable evolution of neuromotor symptoms was observed after rehabilitation, with less residual neurological impairment in the case of higher-grade spondylolisthesis. This case series aims to emphasize the importance of recognizing this pathology in athletes as well as its correct management. Early surgical intervention can prevent the onset and progression of neurological deficits.

Studies in systems, decision and control, Sep 17, 2022

Studies in systems, decision and control, Sep 17, 2022

Studies in systems, decision and control, Sep 17, 2022

Studies in systems, decision and control, Sep 17, 2022

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave w... more Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave work. In a historical period of incipient mechanization, the main sources of energy used from the transportation to the activation of the available rudimentary equipment, were of animal origin, among them the Man. The enslaved workers spent their energy performing tasks using, in most cases, only hand tools, such as axes, scythes and hoes. Human strength was the only source of available energy for the more elaborated activities that could not be done by animals. These activities ranged from deforestation to digging, from planting to weeding or harvesting. This research aimed to obtain a detailed and descriptive framework of energy replacement conditions of slave labour, through a review of historical sources and contemporary studies. Methodology: Six databases were searched with timeframe after 2014, as well as original historical documents. A snowballing approach allowed finding references before 2014. The studies were selected without language restrictions. The quantification of energy recovery was done based on quantity, quality and type of served food; the energy value of those foods; and the average of slaves' energy expenditure in rural activities. Results: The searches in the six databases provided initially 36,355 articles. After screening and analysing all this information, 16 were included: 6 articles, 5 books and 5 rare books. DISCUSSION: The selected studies classified slaves' feeding as insufficient to energy replacement, of low quality and classified as bulk feed by the researchers, that is, it consisted of low-quality foods and its preparation was carried out carelessly as regards hygiene, ways of cooking or seasoning. This diet was repeated daily, leading to the occurrence of digestive system diseases. The difference between the average daily energy expenditure and the replacement of this energy using the supply provided by the slave owners, was also significant. The reduction of this difference was fundamental to human labour and was supplied in different ways. A rather usual one was an increase in the regular supply of alcoholic beverages conclusions: The analysed studies suggest the existence of precarious and similar energy replacement conditions, among the slaves in the different regions of Brazil.

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave w... more Introduction: Until the end of the nineteenth century, the Brazilian economy was based on slave work. In a historical period of incipient mechanization, the main sources of energy used from the transportation to the activation of the available rudimentary equipment, were of animal origin, among them the Man. The enslaved workers spent their energy performing tasks using, in most cases, only hand tools, such as axes, scythes and hoes. Human strength was the only source of available energy for the more elaborated activities that could not be done by animals. These activities ranged from deforestation to digging, from planting to weeding or harvesting. This research aimed to obtain a detailed and descriptive framework of energy replacement conditions of slave labour, through a review of historical sources and contemporary studies. Methodology: Six databases were searched with timeframe after 2014, as well as original historical documents. A snowballing approach allowed finding references before 2014. The studies were selected without language restrictions. The quantification of energy recovery was done based on quantity, quality and type of served food; the energy value of those foods; and the average of slaves' energy expenditure in rural activities. Results: The searches in the six databases provided initially 36,355 articles. After screening and analysing all this information, 16 were included: 6 articles, 5 books and 5 rare books. DISCUSSION: The selected studies classified slaves' feeding as insufficient to energy replacement, of low quality and classified as bulk feed by the researchers, that is, it consisted of low-quality foods and its preparation was carried out carelessly as regards hygiene, ways of cooking or seasoning. This diet was repeated daily, leading to the occurrence of digestive system diseases. The difference between the average daily energy expenditure and the replacement of this energy using the supply provided by the slave owners, was also significant. The reduction of this difference was fundamental to human labour and was supplied in different ways. A rather usual one was an increase in the regular supply of alcoholic beverages conclusions: The analysed studies suggest the existence of precarious and similar energy replacement conditions, among the slaves in the different regions of Brazil.

International journal of occupational medicine and environmental health, Jan 8, 2017

Reliable and valid instruments are essential for understanding fatigue in occupational settings. ... more Reliable and valid instruments are essential for understanding fatigue in occupational settings. This study analyzed the psychometric properties of the Portuguese version of the Swedish Occupational Fatigue Inventory (SOFI). A cross-sectional study was conducted with 218 workers from an automotive industry involved in assembly tasks for fabrication of mechanical cables. Convergent and discriminant validity, internal consistency reliability and confirmatory factor analysis were performed. Results showed adequate fit to data, yielding a 20-item, 5-factor structure (all intercorrelated): Chi²/df (ratio Chi² and degrees of freedom) = 2.530, confirmatory fit index (CFI) = 0.919, goodness of fit index (GFI) = 0.845, root mean square error of approximation (RMSEA) = 0.084. The SOFI presented an adequate internal consistency, with the sub-scales and total scale presenting good reliability values (Cronbach's α values from 0.742 to 0.903 and 0...

Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, ... more Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, due to the existence of concrete between the flanges. The aim of this study is to develop a new proposal for the calculation of the buckling strength of partially encased columns, embedded on walls, under fire conditions. This proposal is based on the current calculation method proposed in Annex G of EN 1994-1-2. This study uses the finite element method to calculate the average temperature of seven components. The average temperature is then used to find the buckling resistance of composite columns when submitted to fire from one side. This solution method is carried out using 30 different cross sections. All cross sections are exposed to the standard fire curve ISO834 from one side, assuming the specific fire rating of 30, 60, 90 and 120 min.

Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, ... more Partially encased columns (PEC) have better fire resistance when compared to bare steel columns, due to the existence of concrete between the flanges. The aim of this study is to develop a new proposal for the calculation of the buckling strength of partially encased columns, embedded on walls, under fire conditions. This proposal is based on the current calculation method proposed in Annex G of EN 1994-1-2. This study uses the finite element method to calculate the average temperature of seven components. The average temperature is then used to find the buckling resistance of composite columns when submitted to fire from one side. This solution method is carried out using 30 different cross sections. All cross sections are exposed to the standard fire curve ISO834 from one side, assuming the specific fire rating of 30, 60, 90 and 120 min.

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical ... more Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical activity (PA). There is growing evidence that prolonged sitting is associated with multiple health risks, including musculoskeletal disorders, biomarkers of increased cardiovascular diseases, some forms of cancer. There is an increasing interest in changing the work environment by implementing various interventions to reduce barriers and promote physical activity. The aim of this short review is to identify factors that affected workers' SB and/or PA to design appropriate interventions. Methodology The search was performed based on PRISMA statement methodology and was conducted in Scopus for articles and reviews published in scientific journals from 2010 until 2019 in English, using a set of root keywords as "sedentary work," "physical activity" and "effectiveness intervention". Results and discussion the review included 12 studies describing effective factors on PA in three categories: organizational factor, individual factor, and social factor. The main organizational factors found were: supportive workplace policies and resources, time for involvement in intervention, paying for activity, management support, work environment factors, and job type (passive jobs, and high-strain jobs). Interpersonal factors, knowledge include (educational level and information about physical activity guidelines) and some sociodemographic factors as individual factors associated with the physical work activity. Furthermore, social factors like social support and social norm have a significant effect on willing to do physical activity in workers. Some studies used "behavior change techniques" to find effective factors on physical activity for identifying the most appropriate interventions. Conclusion: Current evidence demonstrates that some individual, organizational and social factors influence work physical activity; therefore, they need to be considered in each population specifically, before choosing the intervention type. It can contribute to the increasing effectiveness of interventions intended to improve physical activity. Future research in this area should consider the association of various factors identified to enhance the effectiveness of interventions.

3rd Symposium on Occupational Safety and Health Proceedings Book, 2019

Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical ... more Introduction: Many occupations are characterized by sedentary behavior (SB) and lack of physical activity (PA). There is growing evidence that prolonged sitting is associated with multiple health risks, including musculoskeletal disorders, biomarkers of increased cardiovascular diseases, some forms of cancer. There is an increasing interest in changing the work environment by implementing various interventions to reduce barriers and promote physical activity. The aim of this short review is to identify factors that affected workers' SB and/or PA to design appropriate interventions. Methodology The search was performed based on PRISMA statement methodology and was conducted in Scopus for articles and reviews published in scientific journals from 2010 until 2019 in English, using a set of root keywords as "sedentary work," "physical activity" and "effectiveness intervention". Results and discussion the review included 12 studies describing effective factors on PA in three categories: organizational factor, individual factor, and social factor. The main organizational factors found were: supportive workplace policies and resources, time for involvement in intervention, paying for activity, management support, work environment factors, and job type (passive jobs, and high-strain jobs). Interpersonal factors, knowledge include (educational level and information about physical activity guidelines) and some sociodemographic factors as individual factors associated with the physical work activity. Furthermore, social factors like social support and social norm have a significant effect on willing to do physical activity in workers. Some studies used "behavior change techniques" to find effective factors on physical activity for identifying the most appropriate interventions. Conclusion: Current evidence demonstrates that some individual, organizational and social factors influence work physical activity; therefore, they need to be considered in each population specifically, before choosing the intervention type. It can contribute to the increasing effectiveness of interventions intended to improve physical activity. Future research in this area should consider the association of various factors identified to enhance the effectiveness of interventions.

Modern changes in communication, transportation, domestic-intertainment technologies and workplac... more Modern changes in communication, transportation, domestic-intertainment technologies and workplaces are related to a substantial increase of sedentary living.This review was performed to summarize and analyze the studies investigating the impact of decreasing work sedentary time and implementing active workstations to improve work performance. This review was based on relevant articles published in Scopus, Medline, and Web of science from 2007 until 2017. The results of this brief review indicate statistically significant relationships between several interventions for increasing physical activity and employee work performance. Type of intervention and implementation procedure were identified as factors that can determine effects on the job performance. Some studies have shown interventions with positive influence on productivity, others suggest that it is feasible to implement a multi-component intervention such as Stand Up desk with high fidelity with no perceived decrease in productivity. In conclusion, more field studies are necessary to determine work performance and acceptance of dynamic workstations in a real work environment.info:eu-repo/semantics/publishedVersio

Modern changes in communication, transportation, domestic-intertainment technologies and workplac... more Modern changes in communication, transportation, domestic-intertainment technologies and workplaces are related to a substantial increase of sedentary living.This review was performed to summarize and analyze the studies investigating the impact of decreasing work sedentary time and implementing active workstations to improve work performance. This review was based on relevant articles published in Scopus, Medline, and Web of science from 2007 until 2017. The results of this brief review indicate statistically significant relationships between several interventions for increasing physical activity and employee work performance. Type of intervention and implementation procedure were identified as factors that can determine effects on the job performance. Some studies have shown interventions with positive influence on productivity, others suggest that it is feasible to implement a multi-component intervention such as Stand Up desk with high fidelity with no perceived decrease in productivity. In conclusion, more field studies are necessary to determine work performance and acceptance of dynamic workstations in a real work environment.info:eu-repo/semantics/publishedVersio