Study of noise exposure and high blood pressure in shipyard workers

Wu, Trong-Neng; Ko, Ying‐Chin; Chang, Po-Ya

doi:10.1002/ajim.4700120408

Cited by 47 publications

(26 citation statements)

References 21 publications

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“…The A-weighting curve and the C-weighting curve are the most commonly used curves employed to measure SPLs. The NM102 sound level meter or comparable instruments have been employed to measure in-air noise in other studies (Wu et al, 1987;Hodge & Thompson, 1990;Asuquo et al, 2001;Best et al, 2008). During each survey, the minimum and maximum dB values were recorded with both the A and C sound level weightings using the omnidirectional microphone of the sound level meter.…”

Section: Data Collectionmentioning

confidence: 99%

Nocturnal Haul-Out Patterns of Harbor Seals (Phoca vitulina) Related to Airborne Noise Levels in Bellingham, Washington, USA

Acevedo‐Gutiérrez

Cendejas-Zarelli²

2011

Aquat Mamm

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Given their distribution, harbor seals (Phoca vitulina) are likely to interact with human activities and potentially be disturbed. However, it is unclear how human development affects the haul-out behavior of harbor seals near urban areas. Because disturbance related to human development may increase noise levels in air, one might expect seals to haul-out at times when airborne noise levels are low. This study examined the number of harbor seals hauled-out relative to time of day, noise levels in air, and tide level at two haul-out sites in the city of Bellingham, Washington, USA. Harbor seals were observed from May 2008 to April 2009. Two surveys were conducted every 1 to 2 wks-one during the day and one at night. Harbor seal counts and in-air noise levels were recorded approximately 100 m from each haulout site with binoculars and a sound level meter, respectively. Given the strong correlation between time of day and noise levels, one set of linear mixed effects models examined the interactive influence of time of day and tide level on harbor seal numbers. Another set of models examined the effect of noise level and tide level on harbor seal numbers. Despite fluctuations in harbor seal numbers in relation to time of year and haul-out site, more harbor seals hauled-out during the night than during the day. The best model for the number of harbor seals hauled-out included an interaction between time of day and tide level, and an interaction between noise level and tide level. This study indicated that numbers of harbor seals hauling-out in Bellingham were correlated with time of day and in-air noise levels. However, it is unclear if the nocturnal haul-out behavior of harbor seals was a consequence of human development. It is still possible that an unknown factor associated with time of day was responsible for the observed results. To tease out the correlation between time of day and in-air noise levels, a future comparative study between nearby haul-out sites-one close to human activities and one away from them-is recommended.

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Section: Data Collectionmentioning

confidence: 99%

Nocturnal Haul-Out Patterns of Harbor Seals (Phoca vitulina) Related to Airborne Noise Levels in Bellingham, Washington, USA

Acevedo‐Gutiérrez

Cendejas-Zarelli²

2011

Aquat Mamm

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“…104 (1985) encontraram, entre trabalhadores de uma metalúrgica portadores de perda auditiva induzida pelo ruído em grau elevado, aumento significativo da prevalência de HAS quando comparados com trabalhadores da mesma fábrica com audição normal. Wu e col. 113 (1987), em criterioso estudo observational realizado com trabalhadores de um estaleiro, utilizando modelagens distintas, concluí-ram que o risco de desenvolver HAS entre expostos cronicamente a altos níveis de ruído, em relação aos não expostos, é cerca de duas vezes maior. Kristensen 57 (1989), após extensiva revisão a respeito dos efeitos extra-auditivos da exposição ao ruído, refere que, embora seja este ainda um assunto controverso, existem já evidências bastante razoáveis dando suporte à hipótese de associação entre exposição ao ruído e doenças cardiovasculares, afirmando que os trabalhos que não encontram essa associação são, do ponto de vista metodológico, de menor qualidade que os que conseguem firmá-la.…”

Section: Hipertensão Arterial Sistêmica E Ocupação: Literatura Internunclassified

Ocupação e hipertensão

et al. 1993

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CORDEIRO, R. et al. Ocupação e hipertensão. Rev. Saúde Pública, 27:380-7,1993. Com base em revisão bibliográfica discute-se a literatura produzida nas décadas de 70 e 80, no campo da epidemiologia da hipertensão arterial sistêmica entre trabalhadores. Analisa-se não apenas o ponto de vista do conhecimento gerado, mas também os aspectos relacionados ao instrumental teórico-metodológico empregado.

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“…According to some authors, a low level of noise intensity in places where monotonous work is done can increase the productivity of the workers; the same level of sound intensity during work calling for high mental concentration can cause a reduction in productivity (Ickes and Espili, 1979;Smith and Miles, 1987;Wu et al, 1987;Kryter, 1990;Picano, 1990;Hodge and Thompson, 1990;Belojevic, 1991;Cetinguc, 1992).…”

Section: Introductionmentioning

confidence: 99%

Acute experimental exposure to noise and hormonal modifications

Tomei¹,

Ruffino

Tomao³

et al. 2000

Journal of Environmental Science and Health, Part A

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The purpose of this study was to analyse, in healthy volunteers exposed to noise of high intensity, any changes in certain hormonal parameters that might be related to psychological and behavioural effects. The parameters studied were cortisol (CORT), dehydroepiandrosterone-sulphate (DHEA-S), prolactin (PRL), growth hormone (GH), insulin (IRI). Some subjective spontaneously expressed parameters, such as feeling cold, feeling sleepy, being bothered by noise and feeling uneasy, feeling nausea, were also taken into consideration. A significant reduction of cortisol compared to the base values was noted both during exposure to noise and at the end of the stimulus. The DHEA-S values increased compared to the base values during administration of the noise and after exposure had finished. After the end of the noise stimulus, prolactin showed a reduction compared to pre-and post-exposure values. Compared to the basic values, GH diminished both during and after exposure to noise. Insulinaemia showed a significant increase of the value during exposure to noise, both compared with 537

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Study of noise exposure and high blood pressure in shipyard workers

Cited by 47 publications

References 21 publications

Nocturnal Haul-Out Patterns of Harbor Seals (Phoca vitulina) Related to Airborne Noise Levels in Bellingham, Washington, USA

Nocturnal Haul-Out Patterns of Harbor Seals (Phoca vitulina) Related to Airborne Noise Levels in Bellingham, Washington, USA

Ocupação e hipertensão

Acute experimental exposure to noise and hormonal modifications

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