The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Minchao Li - One of the best experts on this subject based on the ideXlab platform.
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effect of low dose vitamin d supplementation on serum 25 oh d in school children and White Collar Workers
Nutrients, 2017Co-Authors: Ronghua Zhang, Xiamusiye Muyiduli, Danting Su, Biao Zhou, Yueqiang Fang, Shuying Jiang, Shuojia Wang, Lichun Huang, Minjia Mo, Minchao LiAbstract:Objective: Our study aimed to investigate the nutritional vitamin D status of school children aged 9–15 years and White-Collar Workers in Zhejiang province, and evaluate the efficacy of low-dose-oral vitamin D supplementation in both populations. Methods: We conducted a prospective controlled trial during March 2014 to November 2015, comparing the efficacy of vitamin D supplements (400 IU/day) with non-intervention for 18 months in school children aged 9–15 years. Meanwhile, a before-after study was conducted among White-Collar Workers for 1 year. Serum 25(OH)D concentration was measured at baseline and after vitamin D supplementation, respectively. Results: At the baseline, 95% of school children and 84% of adult participants had vitamin D deficiency (<20 ng/mL). In school children, no difference was observed between the intervention and control groups with regard to anthropometric data. Serum 25(OH)D concentrations of the school children intervention group, school children control group and White-Collar Workers were 12.77 ± 3.01 ng/mL, 14.17 ± 3.59 ng/mL and 16.58 ± 3.66 ng/mL at baseline and increased to 17.34 ± 3.78 ng/mL, 18.04 ± 4.01 ng/mL and 17.75 ± 5.36 ng/mL after vitamin D supplementation, respectively. Although, after adjusting for potential confounders, the 400 IU oral vitamin D supplementation increased serum 25(OH)D concentration in school children (β = 0.81, p = 0.0426) as well as in White-Collar Workers (p = 0.0839), the prevalence of vitamin D deficiency was still very high among school children (79.23% in intervention group and 72.38% in control group) and White-Collar Workers (76.00%). Conclusions: High prevalence of vitamin D deficiency was common in these two study populations. Daily doses of 400 IU oral vitamin D supplementation was not able to adequately increase serum 25(OH)D concentrations. A suitable recommendation regarding the level of vitamin D supplementation is required for this Chinese population.
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Effect of Low-Dose Vitamin D Supplementation on Serum 25(OH)D in School Children and White-Collar Workers
Nutrients, 2017Co-Authors: Ronghua Zhang, Xiamusiye Muyiduli, Danting Su, Biao Zhou, Yueqiang Fang, Shuying Jiang, Shuojia Wang, Lichun Huang, Minjia Mo, Minchao LiAbstract:Objective: Our study aimed to investigate the nutritional vitamin D status of school children aged 9–15 years and White-Collar Workers in Zhejiang province, and evaluate the efficacy of low-dose-oral vitamin D supplementation in both populations. Methods: We conducted a prospective controlled trial during March 2014 to November 2015, comparing the efficacy of vitamin D supplements (400 IU/day) with non-intervention for 18 months in school children aged 9–15 years. Meanwhile, a before-after study was conducted among White-Collar Workers for 1 year. Serum 25(OH)D concentration was measured at baseline and after vitamin D supplementation, respectively. Results: At the baseline, 95% of school children and 84% of adult participants had vitamin D deficiency (
Chantal Brisson - One of the best experts on this subject based on the ideXlab platform.
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job strain and the prevalence of uncontrolled hypertension among White Collar Workers
Hypertension Research, 2019Co-Authors: Mathilde Lavignerobichaud, Alain Milot, Michel Vezina, Xavier Trudel, Caroline Duchaine, Mahee Gilbertouimet, Denis Talbot, Violaine Dalens, Karine Aube, Chantal BrissonAbstract:: To determine whether White-Collar Workers treated for hypertension who are exposed to psychosocial stressors at work have a higher prevalence of uncontrolled hypertension than unexposed Workers, this study conducted three waves of data collection over a 5-year period (repeated cross-sectional design). The study sample was composed of 464 White-Collar Workers treated for hypertension. At each collection time, ambulatory blood pressure (ABP) was measured every 15 min during the workday. Uncontrolled hypertension was defined as a mean daytime systolic ABP ≥135 mmHg and/or diastolic ABP ≥85 mmHg for non-diabetic participants and systolic ABP ≥125 mmHg and/or diastolic ABP ≥75 mmHg for diabetic participants. Job strain was evaluated with Karasek's demand-latitude model using validated scales for psychological demands and decision latitude. Prevalence ratios (PR) and 95% confidence intervals (CI) were estimated using generalized estimating equations, adjusting for sociodemographic and lifestyle-related risk factors. Men with job strain (high demands and low latitude) and active jobs (high demands and high latitude) had a higher prevalence of uncontrolled hypertension (PR job strain = 1.46, 95% CI: 1.07-1.98 and PR active = 1.47, 95% CI: 1.12-1.94). When considered separately, high demands were associated with a higher prevalence of uncontrolled hypertension in both men (PR highest tertile = 1.60, 95% CI: 1.25-2.06) and women (PR highest tertile = 1.60, 95% CI: 1.03-2.47). Workers exposed to psychosocial stressors at work according to the demand-latitude model had a higher prevalence of uncontrolled hypertension. Reducing these frequent exposures could help to reduce the burden of uncontrolled hypertension.
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Masked hypertension and effort-reward imbalance at work among 2369 White-Collar Workers
Journal of Human Hypertension, 2017Co-Authors: P Boucher, Alain Milot, Mahée Gilbert-ouimet, Xavier Trudel, Caroline Duchaine, Chantal BrissonAbstract:Hypertension is an important risk factor of cardiovascular diseases, the leading cause of death worldwide. Adverse effects of psychosocial factors at work might increase the risk of masked hypertension, but evidences are still scarce. The objective of this study is then to determine whether adverse psychosocial work factors from the effort-reward imbalance (ERI) model are associated with the prevalence of masked hypertension in a population of White-Collar Workers. White-Collar Workers were recruited from three public organizations. Blood pressure was measured at the workplace for manually operated measurements (mean of the first three readings taken by a trained assistant) followed by ambulatory measurements (mean of all subsequent readings taken during the working day). Masked hypertension was defined as manually operated BP
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masked hypertension and effort reward imbalance at work among 2369 White Collar Workers
Journal of Human Hypertension, 2017Co-Authors: P Boucher, Alain Milot, Xavier Trudel, Caroline Duchaine, Mahee Gilbertouimet, Chantal BrissonAbstract:Hypertension is an important risk factor of cardiovascular diseases, the leading cause of death worldwide. Adverse effects of psychosocial factors at work might increase the risk of masked hypertension, but evidences are still scarce. The objective of this study is then to determine whether adverse psychosocial work factors from the effort-reward imbalance (ERI) model are associated with the prevalence of masked hypertension in a population of White-Collar Workers. White-Collar Workers were recruited from three public organizations. Blood pressure was measured at the workplace for manually operated measurements (mean of the first three readings taken by a trained assistant) followed by ambulatory measurements (mean of all subsequent readings taken during the working day). Masked hypertension was defined as manually operated BP<140/90 mm Hg and ambulatory BP ⩾135/85 mm Hg. ERI exposure at work was measured using Siegrist’s validated questionnaire. Blood pressure readings were obtained from 2369 Workers (participation proportion: 85%). ERI exposure (OR: 1.53 (95% CI: 1.16–2.02) and high efforts at work (OR: 1.61 (95% CI: 1.13–1.29) were associated with masked hypertension, after adjusting for sociodemographic and cardiovascular risk factors. Workers exposed to an imbalance between efforts spent at work and reward had a higher prevalence of masked hypertension. High efforts at work might be of particular importance in explaining this association. Future studies should be designed to investigate how clinicians can include questions on psychosocial work factors to screen for masked hypertension and how workplace interventions can decrease adverse psychosocial exposures to lower BP.
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effects of job strain on blood pressure a prospective study of male and female White Collar Workers
American Journal of Public Health, 2006Co-Authors: Chantal Guimont, Nathalie Laflamme, Chantal Brisson, Jocelyne Moisan, Alain Milot, Benoit Mâsse, Michel Vezina, Gilles Dagenais, Caty BlanchetteAbstract:Objectives. We evaluated whether cumulative exposure to job strain increases blood pressure.Methods. A prospective study of 8395 White-Collar Workers was initiated during 1991 to 1993. At follow-up, 7.5 years later, 84% of the participants were reassessed to estimate cumulative exposure to job strain.Results. Compared with men who had never been exposed, men with cumulative exposure and those who became exposed during follow-up showed significant systolic blood pressure increments of 1.8 mm Hg (95% confidence interval [CI]=0.1, 3.5) and 1.5 mm Hg (95% CI=0.2, 2.8), respectively, and relative risks of blood pressure increases in the highest quintile group of 1.33 (95% CI = 1.01, 1.76) and 1.40 (95% CI = 1.14, 1.73). Effect magnitudes were smaller among women. Effects tended to be more pronounced among men and women with low levels of social support at work.Conclusions. Among these White-Collar Workers, exposure to cumulative job strain had a modest but significant effect on systolic blood pressure among me...
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job strain and neck shoulder symptoms a prevalence study of women and men White Collar Workers
Occupational Medicine, 2006Co-Authors: Isabelle Leroux, Chantal Brisson, Sylvie MontreuilAbstract:BACKGROUND: Neck-shoulder symptoms are frequent among Workers. Psychosocial factors at work have been associated with neck-shoulder symptoms, but few studies have examined job strain, the combined effect of high psychological demands (PD) and low decision latitude (DL). AIMS: To examine the association between psychosocial factors at work and the prevalence of self-reported neck-shoulder symptoms among White-Collar Workers. METHODS: In a cross-sectional study of 1543 White-Collar Workers, PD and DL at work were measured with Karasek's questionnaire. Prevalent cases were Workers for whom neck-shoulder symptoms were present for >or=3 days during the previous 7 days and for whom pain intensity was greater than half the visual analogue scale. Gender and social support at work were evaluated as potential effect modifiers. RESULTS: Workers exposed to high job strain had a higher prevalence of neck-shoulder symptoms [adjusted prevalence ratio (PR): 1.54, 95% confidence interval (CI): 1.00-2.37]. No modifying effect of gender was observed in this association. The effect of job strain was stronger in Workers with low social support (adjusted PR: 1.84, 95% CI: 0.92-3.68). These associations tended to be stronger and/or more precise when using alternative exposures and case definition. Namely, a stronger job strain effect was observed when a tertile cut-off was used to classify exposure (adjusted PR: 2.47, 95% CI: 1.15-5.32). CONCLUSION: These results suggest that primary prevention of neck-shoulder symptoms among White-Collar Workers should consider the exposure to job strain, especially when Workers are exposed to low social support at work.
Ase Marie Hansen - One of the best experts on this subject based on the ideXlab platform.
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physical activity job demand control perceived stress energy and salivary cortisol in White Collar Workers
International Archives of Occupational and Environmental Health, 2010Co-Authors: Ase Marie Hansen, Anne Katrine Blangsted, Ernst Albin Hansen, Karen Sogaard, Gisela SjogaardAbstract:Purpose The aim of the present study is to examine the association between physical activity and perceived job demand, job control, perceived stress and energy, and physiological arousal reflected by morning and evening concentrations of cortisol in saliva among White-Collar Workers.
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diurnal profiles of salivary cortisol on workdays among construction Workers versus White Collar Workers
Scandinavian Journal of Work Environment & Health, 2006Co-Authors: Ase Marie Hansen, Roger Persson, Anne Helene Garde, Bjorn Karlson, Palle OrbaekAbstract:Objectives The aim of the present study was to test whether construction Workers, who are known to have a relatively higher risk of cardiovascular disease (CVD), had higher concentrations of cortisol in saliva and a lower relative variability when compared with White-Collar Workers. Methods Data from two groups of male construction Workers with physically demanding job assignments, with either regular or extended workhours (N=40) and a group of White-Collar Workers recruited from both the private and the public sector (N=118) were examined. All of the Workers had participated in previous research projects with similar methodology. Saliva was sampled during ordinary workdays at awakening, between 30 and 45 minutes after awakening, and approximately 14 hours after awakening. Results Compared with the White-Collar Workers, the construction Workers had higher mean concentrations of cortisol in saliva, 36% and 14% for construction Workers with regular and extended workhours, respectively. The observed differences weakened when the exact sampling time (time of day) was taken into consideration in the statistical modeling. Compared with the White-Collar Workers, the construction Workers had a lower relative variability in salivary cortisol as measured by the coefficient of variation (CV 76% versus 99%). A detailed analysis revealed that the construction Workers with regular workhours had the highest concentration of cortisol in saliva but the lowest relative variability when compared with the construction Workers with extended workhours (CV 72% versus 82%). Conclusions The results suggest that physically demanding construction work is associated with a less variable and increased cortisol excretion when compared with White-Collar work.
Helene Sandmark - One of the best experts on this subject based on the ideXlab platform.
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Health, sleep, and professional career in female White-Collar Workers back to work after long-term sick-listing due to minor mental disorders
Scandinavian Journal of Public Health, 2011Co-Authors: Helene SandmarkAbstract:Aims: This study is a 3-year follow up of female White-Collar Workers, who were on long-term sick leave in 2004 due to stress-related and minor mental disorders. The aim is to show what promotes re ...
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understanding long term sick leave in female White Collar Workers with burnout and stress related diagnoses a qualitative study
BMC Public Health, 2010Co-Authors: Helene Sandmark, Monica RenstigAbstract:Background Sick leave rates in Sweden have been significant since the end of the 1990s. In this paper we focus on individual female White-Collar Workers and explore various factors and setting-based sources of ill health in working life and in private life, in order to understand impaired work ability, leading ultimately to long-term sick leave.
Ronghua Zhang - One of the best experts on this subject based on the ideXlab platform.
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effect of low dose vitamin d supplementation on serum 25 oh d in school children and White Collar Workers
Nutrients, 2017Co-Authors: Ronghua Zhang, Xiamusiye Muyiduli, Danting Su, Biao Zhou, Yueqiang Fang, Shuying Jiang, Shuojia Wang, Lichun Huang, Minjia Mo, Minchao LiAbstract:Objective: Our study aimed to investigate the nutritional vitamin D status of school children aged 9–15 years and White-Collar Workers in Zhejiang province, and evaluate the efficacy of low-dose-oral vitamin D supplementation in both populations. Methods: We conducted a prospective controlled trial during March 2014 to November 2015, comparing the efficacy of vitamin D supplements (400 IU/day) with non-intervention for 18 months in school children aged 9–15 years. Meanwhile, a before-after study was conducted among White-Collar Workers for 1 year. Serum 25(OH)D concentration was measured at baseline and after vitamin D supplementation, respectively. Results: At the baseline, 95% of school children and 84% of adult participants had vitamin D deficiency (<20 ng/mL). In school children, no difference was observed between the intervention and control groups with regard to anthropometric data. Serum 25(OH)D concentrations of the school children intervention group, school children control group and White-Collar Workers were 12.77 ± 3.01 ng/mL, 14.17 ± 3.59 ng/mL and 16.58 ± 3.66 ng/mL at baseline and increased to 17.34 ± 3.78 ng/mL, 18.04 ± 4.01 ng/mL and 17.75 ± 5.36 ng/mL after vitamin D supplementation, respectively. Although, after adjusting for potential confounders, the 400 IU oral vitamin D supplementation increased serum 25(OH)D concentration in school children (β = 0.81, p = 0.0426) as well as in White-Collar Workers (p = 0.0839), the prevalence of vitamin D deficiency was still very high among school children (79.23% in intervention group and 72.38% in control group) and White-Collar Workers (76.00%). Conclusions: High prevalence of vitamin D deficiency was common in these two study populations. Daily doses of 400 IU oral vitamin D supplementation was not able to adequately increase serum 25(OH)D concentrations. A suitable recommendation regarding the level of vitamin D supplementation is required for this Chinese population.
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Effect of Low-Dose Vitamin D Supplementation on Serum 25(OH)D in School Children and White-Collar Workers
Nutrients, 2017Co-Authors: Ronghua Zhang, Xiamusiye Muyiduli, Danting Su, Biao Zhou, Yueqiang Fang, Shuying Jiang, Shuojia Wang, Lichun Huang, Minjia Mo, Minchao LiAbstract:Objective: Our study aimed to investigate the nutritional vitamin D status of school children aged 9–15 years and White-Collar Workers in Zhejiang province, and evaluate the efficacy of low-dose-oral vitamin D supplementation in both populations. Methods: We conducted a prospective controlled trial during March 2014 to November 2015, comparing the efficacy of vitamin D supplements (400 IU/day) with non-intervention for 18 months in school children aged 9–15 years. Meanwhile, a before-after study was conducted among White-Collar Workers for 1 year. Serum 25(OH)D concentration was measured at baseline and after vitamin D supplementation, respectively. Results: At the baseline, 95% of school children and 84% of adult participants had vitamin D deficiency (
