Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormone
OBJECTIVES: The aim of this study was to examine blood concentrations of 25-hydroxyvitamin D (25OHD) and parathyroid hormone (PTH) among indoor, outdoor, permanent and rotating night workers and the association with hours spent outdoors on and off work days. METHODS: Blood samples were collected fro...
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| Format: | Article |
| Language: | English |
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Nordic Association of Occupational Safety and Health (NOROSH)
2018-11-01
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| Series: | Scandinavian Journal of Work, Environment & Health |
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| Online Access: |
https://www.sjweh.fi/show_abstract.php?abstract_id=3745
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| _version_ | 1828887053952090112 |
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| author | Stine Daugaard Anne Helene Garde Åse Marie Hansen Helene Tilma Vistisen Lars Rejnmark Henrik A Kolstad |
| author_facet | Stine Daugaard Anne Helene Garde Åse Marie Hansen Helene Tilma Vistisen Lars Rejnmark Henrik A Kolstad |
| author_sort | Stine Daugaard |
| collection | DOAJ |
| description | OBJECTIVES: The aim of this study was to examine blood concentrations of 25-hydroxyvitamin D (25OHD) and parathyroid hormone (PTH) among indoor, outdoor, permanent and rotating night workers and the association with hours spent outdoors on and off work days. METHODS: Blood samples were collected from 425 workers (162 indoor, 112 outdoor, 118 rotating night and 33 permanent night workers) throughout all seasons. Serum concentrations of 25-hydroxyvitamin D (25OHD) and parathyroid hormone (PTH) were analyzed by isotope dilution liquid chromatography-tandem mass spectrometry (LC MS/MS) and an automated immune analyzer, respectively. Personal light exposure levels were continuously recorded and used to estimate hours spent outdoors (all workers). RESULTS: Permanent night workers had 25.3% (95% CI 11.9–36.6) lower 25OHD concentration, 4.55 (95% CI 1.39–14.94) higher odds of vitamin D insufficiency (<50 nmol/L) and 14.5% [95% confidence interval (CI) 0.1–31.1] higher PTH concentration than indoor workers. Outdoor workers had similar 25OHD concentrations but 7.5% (95% CI -0.5–14.9) lower PTH concentration compared to indoor workers. Rotating night workers 25OHD and PTH concentrations did not differ from indoor workers. Concentration of 25OHD increased by 5.2% (95% CI 1.1–9.5) per hour spent outdoor at workdays in the summer. CONCLUSION: Clinicians should be aware that vitamin D insufficiency may be more prevalent among permanent night workers and human resources should consider the positive effect of allowing workers to spend time outdoor during work hours. |
| first_indexed | 2024-12-13T11:56:54Z |
| format | Article |
| id | doaj.art-3eb1c26c1b9349deb4962f96533fbd4e |
| institution | Directory Open Access Journal |
| issn | 0355-3140 1795-990X |
| language | English |
| last_indexed | 2024-12-13T11:56:54Z |
| publishDate | 2018-11-01 |
| publisher | Nordic Association of Occupational Safety and Health (NOROSH) |
| record_format | Article |
| series | Scandinavian Journal of Work, Environment & Health |
| spelling | doaj.art-3eb1c26c1b9349deb4962f96533fbd4e2022-12-21T23:47:12ZengNordic Association of Occupational Safety and Health (NOROSH)Scandinavian Journal of Work, Environment & Health0355-31401795-990X2018-11-0144664765710.5271/sjweh.37453745Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormoneStine Daugaard0Anne Helene GardeÅse Marie HansenHelene Tilma VistisenLars RejnmarkHenrik A KolstadDepartment of Occupational Medicine, Aarhus University Hospital, Aarhus, Denmark, Nørrebrogade 2c, 8000 Århus C, Denmark.OBJECTIVES: The aim of this study was to examine blood concentrations of 25-hydroxyvitamin D (25OHD) and parathyroid hormone (PTH) among indoor, outdoor, permanent and rotating night workers and the association with hours spent outdoors on and off work days. METHODS: Blood samples were collected from 425 workers (162 indoor, 112 outdoor, 118 rotating night and 33 permanent night workers) throughout all seasons. Serum concentrations of 25-hydroxyvitamin D (25OHD) and parathyroid hormone (PTH) were analyzed by isotope dilution liquid chromatography-tandem mass spectrometry (LC MS/MS) and an automated immune analyzer, respectively. Personal light exposure levels were continuously recorded and used to estimate hours spent outdoors (all workers). RESULTS: Permanent night workers had 25.3% (95% CI 11.9–36.6) lower 25OHD concentration, 4.55 (95% CI 1.39–14.94) higher odds of vitamin D insufficiency (<50 nmol/L) and 14.5% [95% confidence interval (CI) 0.1–31.1] higher PTH concentration than indoor workers. Outdoor workers had similar 25OHD concentrations but 7.5% (95% CI -0.5–14.9) lower PTH concentration compared to indoor workers. Rotating night workers 25OHD and PTH concentrations did not differ from indoor workers. Concentration of 25OHD increased by 5.2% (95% CI 1.1–9.5) per hour spent outdoor at workdays in the summer. CONCLUSION: Clinicians should be aware that vitamin D insufficiency may be more prevalent among permanent night workers and human resources should consider the positive effect of allowing workers to spend time outdoor during work hours. https://www.sjweh.fi/show_abstract.php?abstract_id=3745 blood concentrationvitamin dparathyroid hormonerisk factoroccupationoccupational healthcross-sectional studyshift worknight workseasonultraviolet radiationdietindoor workoutdoor work |
| spellingShingle | Stine Daugaard Anne Helene Garde Åse Marie Hansen Helene Tilma Vistisen Lars Rejnmark Henrik A Kolstad Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormone Scandinavian Journal of Work, Environment & Health blood concentration vitamin d parathyroid hormone risk factor occupation occupational health cross-sectional study shift work night work season ultraviolet radiation diet indoor work outdoor work |
| title | Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormone |
| title_full | Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormone |
| title_fullStr | Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormone |
| title_full_unstemmed | Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormone |
| title_short | Indoor, outdoor, and night work and blood concentrations of vitamin D and parathyroid hormone |
| title_sort | indoor outdoor and night work and blood concentrations of vitamin d and parathyroid hormone |
| topic | blood concentration vitamin d parathyroid hormone risk factor occupation occupational health cross-sectional study shift work night work season ultraviolet radiation diet indoor work outdoor work |
| url |
https://www.sjweh.fi/show_abstract.php?abstract_id=3745
|
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