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: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
abstract::Workplace violence, a possible cause of job stress, has recently become an important concern in occupational health. This study determined the prevalence of workplace violence and its risk factors for employees at a psychiatric hospital in Taiwan. A questionnaire developed by ILO/ICN/WHO/PSI was first translated and v...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.l7132
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to determine ultraviolet (UV) action spectra for cell killing of primary porcine lens epithelial cells (LECs) that can be used to establish guidelines for evaluation of the hazard of cataract due to UV exposure in the workplace. METHODS:Primary porcine LECs were exposed to differen...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.11-0215-oa
更新日期:2012-01-01 00:00:00
abstract::This review provides perspectives on cardiovascular occupational stress research since the 1960s until now. The author argues for closer links between basic science and clinical follow-up examinations of patients. In an excellent way urinary excretion of adrenaline and noradrenaline during wake hours mirrors day to da...
journal_title:Journal of occupational health
pub_type: 杂志文章,评审
doi:10.1002/1348-9585.12032
更新日期:2019-01-01 00:00:00
abstract:BACKGROUNDS:Two-component acrylic resin used in nail art and dentistry can cause allergic contact dermatitis (ACD), but only a few reports from Japan have been published. CASES:A 35-year-old female manicurist (case 1) and 30-year-old female dental hygienist (case 2) were diagnosed with ACD caused by ethyl methacrylate...
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
abstract:BACKGROUND:Healthcare workers are at high risk of infection from blood-borne pathogens, such as Hepatitis B and C Virus, and Human Immunodeficiency. Occupational exposure to needle-stick injuries (NSIs) continue to have a major health problem in the healthcare systems of developing countries. Thus, this review article ...
journal_title:Journal of occupational health
pub_type: 杂志文章,评审
doi:10.1002/1348-9585.12179
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVES:It is common to find doctors working long and odd hours and many at times without rest and sleep. Despite the evidence of adverse risk, jeopardizing patient safety under the hands of fatigue doctors under such working hours has not changed in many places. It has argued that with such training and subsequent ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1002/1348-9585.12121
更新日期:2020-01-01 00:00:00
abstract::Objective of this study is to clarify the health-related conditions of Japanese male expatriates in Thailand. Records of Japanese male expatriates in their 30s to 50s who consulted outpatient clinics at Bangkok Hospital in 2005 were analyzed for number and type of outpatient visits then compared with data from the "Pa...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.l7072
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVES:We performed the current study to (1) understand the distribution of culturable airborne bacteria over a one-year monitoring period, (2) confirm places in stations where airborne bacteria are highly detected, (3) understand the factors that affect concentrations of airborne bacteria and (4) compare the distr...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.13-0055-fs
更新日期:2013-01-01 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...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.2018-0007-OA
更新日期:2018-09-26 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...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.46.470
更新日期:2004-11-01 00:00:00
abstract:OBJECTIVES:Presenteeism is undoubtedly a widespread phenomenon in organizations. Research on presenteeism has been conducted for decades in the broader workforce (eg, nurses, doctors, teachers, police officers). Occupational stress and turnover intention in occupational therapy have been extensively studied. However, t...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1002/1348-9585.12153
更新日期:2020-01-01 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 sum of urinary inorganic arsenic (iAs), monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA) concentrations is used for the biological monitoring of occupational iAs exposure. Although DMA is a major metabolite of iAs, it is an inadequate index because high DMA levels are present in urine after s...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.15-0241-OA
更新日期:2016-05-25 00:00:00
abstract::This Document, "Guidelines for personal exposure monitoring of chemicals" ("this Guideline"), has been prepared by "The Committee for Personal Exposure Monitoring" ("the Committee") of the Expert Division of Occupational Hygiene & Ergonomics, Japan Society for Occupational Health. Considering the background of the gro...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.17-0311-RA
更新日期:2018-03-27 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
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:OBJECTIVES:In this study, we focused on the qualitative and quantitative differences of the lung lesions induced by single or multiple intratracheal administration of nickel oxide nanoparticles (NiO). METHODS:Male rats were randomized into groups receiving intratracheal administrations in a single dose or two to four ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.16-0184-OA
更新日期:2017-03-28 00:00:00
abstract:BACKGROUND:Numerous workers have participated in recovery efforts following the accident that occurred at the Tokyo Electric Power Company (TEPCO) Fukushima Daiichi Nuclear Power Plant after the Great East Japan Earthquake. These workers, belonging to various companies, have been engaged in various tasks since the acci...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.17-0150-CS
更新日期:2018-03-27 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::Thioglycolic acid (TGA) is the active ingredient of permanent-waving solution (PWS). TGA has been shown to be a chemical of high toxicity, which can be absorbed through intact skin and cause damage to organs or systems in animals. This study evaluated the effect of TGA-containing PWS on the health of a human populatio...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.45.400
更新日期:2003-11-01 00:00:00
abstract:OBJECTIVES:Work-related psychosocial hazards are associated with adverse health outcomes among workers. The association between psychosocial hazards and physiological health outcomes among laboratory technicians has not been studied previously. The objective of this study was to measure the association between work-rel...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.13-0050-fs
更新日期:2014-01-01 00:00:00
abstract::Healthcare workers (HCWs) are exposed daily to the risk of injury by needlesticks and other medical instruments. However, the psychiatric impacts of such injuries have not been evaluated. The aim of this study was to evaluate the mental health status of HCWs with experiences of needlestick and sharps injuries. A cross...
journal_title:Journal of occupational health
pub_type: 杂志文章,多中心研究
doi:10.1539/joh.48.474
更新日期:2006-11-01 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: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::The purpose of this study was to assess the value and usefulness of high resolution computed tomography (HRCT) in the diagnostics of small opacities and complications of silicosis in mine machinery manufacturing workers, compared to conventional radiograms. The diagnosis of silicosis is mainly based on the radiologica...
journal_title:Journal of occupational health
pub_type: 杂志文章,随机对照试验
doi:10.1539/joh.l8015
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to examine changes in working hours, shift work, psychological and physical job demands, job control and job insecurity in Taiwanese employees by gender and age during the period of 2001 to 2010. METHODS:The study subjects were 36,750 men and 27,549 women, aged 25-64, from 4 rounds ...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.12-0286-oa
更新日期:2014-01-01 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:OBJECTIVES:The aims of this study were to examine sexual harassment (SH) among hospital staffs in Taiwan, in terms of three-month incidence rate, the frequency of each type and the perception of SH, perpetrated by coworkers, patients and patients' families and to investigate the gender differences for these issues. ME...
journal_title:Journal of occupational health
pub_type: 杂志文章
doi:10.1539/joh.11-0063-fs
更新日期:2012-01-01 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