Abstract:
:The aim of this study was to investigate the usefulness of heart rate variability (HRV) and urinary catecholamines (CA) as objective indices of heat stress effect. We examined physiological responses, subjective symptoms, HRV and urinary CA to evaluate the effect of heat exposure on the autonomic nervous system. Six healthy male students volunteered for this study. They were exposed on different days to either a thermoneutral condition at wet bulb globe temperature (WBGT) 21 degrees C, or a heated condition at WBGT 35 degrees C for 30 min, while seated on a chair. In the thermoneutral condition, differences of all parameters between the values before and after 30 min exposure were not statistically significant. In the heated condition, heart rate, body temperature and scores for subjective symptoms (feverishness, sweating, mood, and face flushing) significantly increased after 30 min exposure (p<0.05). Also, the high frequency component (HF%) of HRV significantly decreased and the low frequency/high frequency (LF/HF) ratio of HRV significantly increased after 30 min exposure to the heated condition (p<0.05). There were no significant differences between the amounts of urinary CA before and after the 30 min exposures; however, the norepinephrine amount after 30 min exposure to the heated condition was significantly greater than that of the thermoneutral condition (p<0.05). The heat exposure (WBGT 35 degrees C) induced activation of the sympathetic nervous system and a withdrawal of the parasympathetic nervous system. These findings coincide with observed changes of heart rate, body temperature and subjective symptoms. It is suggested that HRV (HF% and LF/HF ratio) and urinary norepinephrine may be useful objective indices of heat stress; HRV seems to be more sensitive to heat stress than urinary CA.
journal_name
J Occup Healthjournal_title
Journal of occupational healthauthors
Yamamoto S,Iwamoto M,Inoue M,Harada Ndoi
10.1539/joh.49.199subject
Has Abstractpub_date
2007-05-01 00:00:00pages
199-204issue
3eissn
1341-9145issn
1348-9585pii
JST.JSTAGE/joh/49.199journal_volume
49pub_type
杂志文章abstract:OBJECTIVES:Occupational lead (Pb) exposure is still an important health problem in the world. Long-term Pb exposure causes several adverse effects. The aim of this study was to investigate the changes of inflammation markers with chronic Pb exposure by analyzing neopterin levels and kynurenine (Kyn) to tryptophan (Trp)...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.16-0273-OA
更新日期:2017-07-27 00:00:00
abstract:OBJECTIVE:The purpose of this study was to investigate the effects of Nickel (Ni) -smelting fumes on oncogenic proteins in vivo and in vitro. METHODS:Ni fallout beside a Ni smelting furnace in a factory was sampled to study its toxic effect. The effects of Ni-smelting fumes on the regulation of PI3K and ERK signaling ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.15-0287-OA
更新日期:2016-09-30 00:00:00
abstract::This study assessed the relationship of age, poor perception of working condition, poor safety environment, poor management and supervision, risk-taking behavior, emotional instability, negative job involvement, job dissatisfaction, job stress, and poor safety performance of workers to occupational injuries. This case...
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更新日期:2004-11-01 00:00:00
abstract:OBJECTIVE:To investigate associations of work-related stressors and their changes over time with the risk of developing metabolic syndrome (MetS) among Japanese manufacturing workers. METHODS:Participants were 1,040 employees aged 19 to 68 years who were free from MetS at baseline and completed the three year-interval...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.2017-0298-OA
更新日期:2018-11-27 00:00:00
abstract:OBJECTIVE:Nickel oxide nanoparticles (NiONPs) are representative metal oxide NPs and are categorized as an insoluble nickel compound. Our previous studies suggested that NiONPs have more pulmonary toxicity than micron-sized NiO because they may dissolve slowly and produce many more Ni ions. We confirmed the hypothesis ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1002/1348-9585.12162
更新日期:2020-01-01 00:00:00
abstract::Infrared Spectrophotometry (IR) is now widely used to determine crystalline silica in industrial dust samples. Though the IR method has many advantages when dealing with respirable dust samples, some serious analytical errors are often caused by interference minerals contamination. These minerals have a characteristic...
journal_title:Journal of occupational health
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doi:10.1539/joh.45.94
更新日期:2003-03-01 00:00:00
abstract::This study was aimed at understanding the relationship among menstrual pattern, dysmenorrhea, life style and working conditions in nurses. The nurses were randomly selected from a medical center in Northern Taiwan. Each subject completed daily records including life and working conditions during the study period. The ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.47.149
更新日期:2005-03-01 00:00:00
abstract:OBJECTIVES:This study aimed to investigate the association between occupational clusters and allergic rhinitis (AR). METHODS:The study was based on data from the Korean National Health and Nutrition Examination Survey (KNHANES: 2007-2015). This study included 46,965 individuals: 20,491 men and 26,474 women. AR was def...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.2017-0234-OA
更新日期:2018-07-25 00:00:00
abstract:OBJECTIVES:Although many studies have examined locomotive syndrome (LS) among elderly people, few studies have examined LS in young- and middle-aged adults. This study aimed to provide basic data on the epidemiological characteristics of LS, including in young- and middle-aged adults. METHOD:We conducted a cross-secti...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1002/1348-9585.12053
更新日期:2019-07-01 00:00:00
abstract::The present study examined degrees of job-related stress factors as well as mental and physical symptoms among Japanese hospital nurses in various departments, and clarified associations of departments and job-related stress factors with those symptoms. A self-administered anonymous questionnaire was distributed to 1,...
journal_title:Journal of occupational health
pub_type: 杂志文章,多中心研究
doi:10.1539/joh.50.79
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVES:The purpose of the present study was to obtain knowledge for improvement of the housing and life among radiation decontamination workers by examining the effect of housing type on anxiety over lack of privacy. METHODS:This cross-sectional study comprised 544 male radiation decontamination workers in Fukushi...
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pub_type: 杂志文章
doi:10.1539/joh.2018-0007-OA
更新日期:2018-09-26 00:00:00
abstract::In Japan, consultations concerning child abuse cases are increasing rapidly, and the mental health of child-counseling office workers, who must deal with them, has emerged as an issue. To measure the state of mental health of these workers, and to clarify the characteristics of their job-related stress, we sent a ques...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.49.125
更新日期:2007-03-01 00:00:00
abstract:OBJECTIVE:This cross-sectional study aimed to assess fire risk in fire hazardous zones (FHZ) at the dispenser areas of gasoline stations. METHODS:There were 47 stations chosen for fire risk assessment and two zones around the dispenser area of each station were assessed. The assessments were carried out by applying th...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1002/1348-9585.12137
更新日期:2020-01-01 00:00:00
abstract::This study was conducted on a thermal exposure chamber designed for assessing workers' thermal hazard. In order to assess the efficacy of the studied chamber, three environmental conditions were selected to simulate high, middle and low thermal impact situations, with air temperatures (Ta) of 43.12, 36.23 and 25.77 ma...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.45.153
更新日期:2003-05-01 00:00:00
abstract:OBJECTIVES:Independent exposure to noise or organic solvents is reported to be associated with cardiovascular effects, but the effect of joint exposure is unclear. The present study aimed to investigate effects of noise, a mixture of organic solvents (N,N-dimethylformamide (DMF) and toluene) and their interaction on hy...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.l8121
更新日期:2009-01-01 00:00:00
abstract::The effects of working hours on health were examined taking psychological job strain into account. White-collar workers employed at the main office of a Japanese manufacturing company provided data for analysis done in 1997. The eligible subjects were 286 workers aged 20-39. Causal relationships between working hours,...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.46.345
更新日期:2004-09-01 00:00:00
abstract::This cross-sectional study on a random sample of 1,500 ambulance personnel investigated the relationships between self-reported work-related physical and psychosocial factors, worry about work conditions, and musculoskeletal disorders among female and male ambulance personnel. Three different outcomes, complaints, act...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.47.481
更新日期:2005-11-01 00:00:00
abstract:OBJECTIVES:Allyl nitrile (3-butenenitrile) occurs naturally in the environment, in particular, in cruciferous vegetables, indicating a possible daily intake of the compound. There is no report on actual health effects of allyl nitrile in humans, although it is possible that individuals in the environment are at a risk ...
journal_title:Journal of occupational health
pub_type: 杂志文章,评审
doi:10.1539/joh.16-0147-RA
更新日期:2017-03-28 00:00:00
abstract:OBJECTIVES:Arsine, a potent hemolytic agent, is widely used in the semiconductor industry. We report a case of arsine poisoning confirmed by arsenic speciation analysis in serum and urine that occurred in a recycling factory. CASE:A male worker in his twenties noticed hematuria 3 h after finishing work and was admitte...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.l10108
更新日期:2011-01-01 00:00:00
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journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.13-0244-cs
更新日期:2014-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1539/joh.13-0050-fs
更新日期:2014-01-01 00:00:00
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更新日期:2006-09-01 00:00:00
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journal_title:Journal of occupational health
pub_type: 杂志文章,meta分析,评审
doi:10.1539/joh.k8004
更新日期:2009-01-01 00:00:00
abstract::Systemic effects of p, p'-DDE (1, 1-dichloro-2, 2 bis (p-chlorophenyl) ethylene; DDE) on immature male rats were investigated in pubertal Wistar rats after oral administration of DDE. Special rat chow containing 125 ppm DDE (approximately 10 mg/kg DDE) had been administered daily for 42 d since 6 wk of age and its eff...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.45.223
更新日期:2003-07-01 00:00:00
abstract::Sleep Apnea Syndrome (SAS) is a condition characterized by sleep-disordered breathing resulting in health impairment and sleep problems. From the viewpoints of the prevention of health impairment, accidents at work and traffic accidents, active implementation of screening for SAS in workplaces is necessary. Using a po...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.49.1
更新日期:2007-01-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to investigate the association between skill underutilization, a psychological job stressor proposed in the NIOSH (National Institute for Occupational Safety and Health) job stress model, and the prevalence of hypertension. METHODS:We studied sitting blood pressure and fasting bloo...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.13-0146-br
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Nurses are one of the population groups with the highest prevalence of musculoskeletal disorders (MSDs). At many sites, musculoskeletal symptoms (MS) represent a major health-care burden, adversely affecting nurses' quality of life and giving rise to mental health issues. OBJECTIVES:This study measured the ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1002/1348-9585.12161
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Petrochemical industries are known as sources of many toxic chemicals. Safety and health risks of the petrochemical workers employed at Map Ta Phut Industrial Estate, located in Rayong, Thailand, are potentially high. METHODS:The research materials consisted of documents emanating from statutory reports on ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.11-0091-oa
更新日期:2011-01-01 00:00:00
abstract:OBJECTIVES:There are high levels of global and national underemployment, but limited information is available on the impact of this phenomenon on the quality of employees' working lives. This study examines the relations among perceived employer support for creative work, different forms of underemployment and employee...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.12-0192-oa
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:This report reviews the carcinogenicity of multi-walled carbon nanotubes (MWCNTs) in experimental animals, concentrating on MWNT-7, a straight fibrous MWCNT. METHODS:MWCNTs were administered to mice and rats by intraperitoneal injection, intrascrotal injection, subcutaneous injection, intratracheal instilla...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.17-0102-RA
更新日期:2018-01-25 00:00:00