Research Topics
| Masaya TakahashiSummaryAffiliation: National Institute of Industrial Health Country: Japan Publications
| Collaborators
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Detail Information
Publications
Disturbed sleep-wake patterns during and after short-term international travel among academics attending conferencesMasaya Takahashi
National Institute of Industrial Health, 6 21 1, Nagao, Tama ku, Kawasaki 214 8585, Japan
Int Arch Occup Environ Health 75:435-40. 2002..To examine variations in sleep and wakefulness associated with international travel...- Maintenance of alertness and performance by a brief nap after lunch under prior sleep deficitM Takahashi
National Institute of Industrial Health, Kawasaki, Japan
Sleep 23:813-9. 2000..2 min, and no stage 3 and 4 sleep was observed. The above results suggest that under prior sleep deficit, a 15-min nap during post-lunch rest maintains subsequent alertness and performance, particularly in the mid-afternoon... - The role of prescribed napping in sleep medicineMasaya Takahashi
National Institute of Industrial Health, 6 21 1, Nagao, Tama ku, Kawasaki, 214 8585, Japan
Sleep Med Rev 7:227-35. 2003.... - Post-lunch nap as a worksite intervention to promote alertness on the jobMasaya Takahashi
National Institute of Industrial Health, 6 21 1, Nagao, Tama ku, Kawasaki 214 8585, Japan
Ergonomics 47:1003-13. 2004..Workers' attitudes toward the nap were favourable. Although further intervention research is required, our results suggest that post-lunch napping may have the potential to promote daytime alertness at work... - Sickness absence in relation to psychosocial work factors among daytime workers in an electric equipment manufacturing companyYasumasa Otsuka
National Institute of Occupational Safety and Health, Kawasaki, Kanagawa, Japan
Ind Health 45:224-31. 2007..10). This study suggests that appropriate use of sickness absence at times of being exposed to high quantitative workload may help male workers to recover from stressful situations... - Impact of psychosocial job stress on non-fatal occupational injuries in small and medium-sized manufacturing enterprisesAkinori Nakata
National Institute of Industrial Health, Kawasaki, Japan
Am J Ind Med 49:658-69. 2006..The purpose of this study was to examine the association between psychosocial job stress and occupational injuries among workers in SMEs... 
Work schedule differences in sleep problems of nursing home caregiversMasaya Takahashi
National Institute of Occupational Safety and Health, 6 21 1, Nagao, Tama ku, Kawasaki 214 8585, Japan
Appl Ergon 39:597-604. 2008..33, 1.36-4.02), and poor sleep quality (2.15, 1.09-4.22). Our data suggest that working under a rotating two-shift system, which has a longer night shift, is associated with an elevated risk of sleep problems for nursing home caregivers...- Association of active and passive smoking with sleep disturbances and short sleep duration among japanese working populationAkinori Nakata
National Institute of Occupational Safety and Health, Kawasaki, Japan
Int J Behav Med 15:81-91. 2008..The relationship between passive smoking and sleep is uncertain... - Musculoskeletal pain and night-shift naps in nursing home care workersMasaya Takahashi
National Institute of Occupational Safety and Health, Nagao, Tama ku, Kawasaki, Japan
Occup Med (Lond) 59:197-200. 2009..Taking a nap during night shifts has been proposed to ameliorate shift work-related problems, but its relationship with MSDs is not clear... - How do the timing and length of a night-shift nap affect sleep inertia?Tomohide Kubo
National Institute of Occupational Safety and Health, Kawasaki, Japan
Chronobiol Int 27:1031-44. 2010..The present findings are significant in terms of occupational safety; the practical implication is that great care is needed when taking a 1-h nap between 04:00 and 05:00 h on the night shift... - Validation of the Karolinska sleepiness scale against performance and EEG variablesKosuke Kaida
Japan National Institute of Occupational Safety and Health, Kawasaki, Japan
Clin Neurophysiol 117:1574-81. 2006..The main aim of the present study was to investigate the validity and reliability of the KSS with electroencephalographic, behavioral and other subjective indicators of sleepiness... - Sleep, fatigue, recovery, and depression after change in work time control: a one-year follow-up studyMasaya Takahashi
National Institute of Occupational Safety and Health, Nagao, Tama ku, Kawasaki, Japan
J Occup Environ Med 54:1078-85. 2012..We examined how change in work time control was associated with sleep and health 1 year later... - Psychosocial work characteristics predicting daytime sleepiness in day and shift workersMasaya Takahashi
National Institute of Occupational Safety and Health, Tama ku, Kawasaki, Japan
Chronobiol Int 23:1409-22. 2006..The present findings may imply that redesigning these aspects of work environment would be of help in managing daytime sleepiness... - Worktime control-dependent reductions in fatigue, sleep problems, and depressionMasaya Takahashi
National Institute of Occupational Safety and Health, Nagao, Tama ku, Kawasaki, Japan
Appl Ergon 42:244-50. 2011..The present findings indicate that increased worktime control and enhanced control over days off in particular, may be associated with favorable health outcomes... - Sleep-related risk of occupational injuries in Japanese small and medium-scale enterprisesAkinori Nakata
National Institute of Industrial Health, Kawasaki, Japan
Ind Health 43:89-97. 2005..The findings suggest that poor nocturnal sleep habits are associated with self-reported occupational injury... - [Usage survey of care equipment in care service facilities for the elderly]Kazuyuki Iwakiri
National Institute of Occupational Safety and Health, Nagao, Kawasaki, Japan
Sangyo Eiseigaku Zasshi 49:12-20. 2007..Therefore, we thought that care workers must consistently use care equipment. To achieve such increased usage, we must improve the usability of the equipment... - Weekend sleep intervention for workers with habitually short sleep periodsTomohide Kubo
National Institute of Occupational Safety and Health, Kawasaki, Japan
Scand J Work Environ Health 37:418-26. 2011..This study was conducted to determine whether extended sleep time during the weekend improves alertness and performance during the subsequent week for workers who are habitually short on sleep time... - Association of sickness absence with poor sleep and depressive symptoms in shift workersAkinori Nakata
National Institute of Industrial Health, Kawasaki, Japan
Chronobiol Int 21:899-912. 2004..The association is particularly strong with long-term absence in male shift workers... - Health problems due to long working hours in Japan: working hours, workers' compensation (Karoshi), and preventive measuresKenji Iwasaki
Institute of Industrial Health, National Institute of Occupational Safety and Health, Nagao, Kawasaki, Japan
Ind Health 44:537-40. 2006..It is obvious that we need to continue research regarding the impact on worker health and the management of long working hours... - Indoor exposure to natural bright light prevents afternoon sleepinessKosuke Kaida
National Institute of Industrial Health, Kawasaki, Japan
Sleep 29:462-9. 2006..The present study examined the effects of indoor exposure to natural bright light on afternoon sleepiness... 
Prioritizing sleep for healthy work schedulesMasaya Takahashi
National Institute of Occupational Safety and Health, 6 21 1, Nagao, Tama ku, Kawasaki 214 8585, Japan
J Physiol Anthropol 31:6. 2012..Therefore, we suggest establishing work-sleep balance, similar to work-life balance, as a principle for designing and improving work schedules...- Characterizing recovery of sleep after four successive night shiftsTomohide Kubo
National Institute of Occupational Safety and Health, 6 21 1 Nagao, Tama ku, Kawasaki 214 8585, Japan
Ind Health 47:527-32. 2009..The correlation analysis indicated that sleep habits (bed time and variation of wake time) prior to the experiment were significantly related to the recovery patterns, rather than performance and alertness during the night shifts... - Modifying effects of perceived adaptation to shift work on health, wellbeing, and alertness on the job among nuclear power plant operatorsMasaya Takahashi
National Institute of Industrial Health, 6-21-1 Nagao, Tama-ku, Kawasaki 214-8585, Japan
Ind Health 43:171-8. 2005.... - Job stress, social support, and prevalence of insomnia in a population of Japanese daytime workersAkinori Nakata
National Institute of Industrial Health, 6 21 1 Nagao, Tama ku, Kawasaki 214 8585, Japan
Soc Sci Med 59:1719-30. 2004.... - Self-awakening, sleep inertia, and P3 amplitude in elderly peopleKosuke Kaida
The Japan Society for Promotion of Science
Percept Mot Skills 102:339-51. 2006..The present study indicates a 20-min. nap reduces afternoon sleepiness, and the application of self-awakening may contribute to higher arousal after a nap taken by this elderly group... - Arm pain and daytime sleepiness among nursing home employeesMasaya Takahashi
National Institute of Occupational Safety and Health, Nagao, Kawasaki, Japan
Ind Health 44:669-73. 2006..These findings suggest that arm pain is associated with elevated sleep propensity/fatigue in nursing home work... - Association between night-shift work and serum 25-hydroxyvitamin D levels in Japanese male indoor workers: a cross-sectional studyHiroaki Itoh
National Institute of Occupational Safety and Health, Kawasaki, Japan
Ind Health 49:658-62. 2011..These results clearly indicate the need for large-scale studies to test the hypothesis that night-shift work is associated with lower 25OHD levels... - Heart rate variability in occupational health --a systematic reviewFumiharu Togo
National Institute of Occupational Safety and Health, Tama ku, Kawasaki 214 8585, Japan
Ind Health 47:589-602. 2009..We also propose the use of very low and ultralow frequency HRV components in autonomic research for workers' health... - Sleep-disordered breathing and blood pressure levels among shift and day workersTakeshi Tanigawa
Department of Public Health Medicine, Doctorial Program in Social and Environmental Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
Am J Hypertens 19:346-51; discussion 352. 2006..The objective of this study was to examine whether a relationship between SDB and blood pressure/hypertension is more evident among shift workers than among day workers... - Perceived psychosocial job stress and sleep bruxism among male and female workersAkinori Nakata
Division of Applied Research and Technology, National Institute of Occupational Safety and Health, 4676 Columbia Parkway, Cincinnati, OH 45226, USA
Community Dent Oral Epidemiol 36:201-9. 2008..The aim of this epidemiological study was to examine the relationship between psychosocial job stress and SB... - Perceived job stress and sleep-related breathing disturbance in Japanese male workersAkinori Nakata
National Institute of Occupational Safety and Health, Japan
Soc Sci Med 64:2520-32. 2007..Results also indicate that job stress should be considered when evaluating SBD in occupational and clinical settings... - A short nap and natural bright light exposure improve positive mood statusKosuke Kaida
National Institute of Occupational Safety and Health, Kanagawa, Japan
Ind Health 45:301-8. 2007..These results suggest that the proper application of both natural light and a short nap shifts the mood status to the positive/favorable side... - Non-fatal occupational injury among active and passive smokers in small- and medium-scale manufacturing enterprises in JapanAkinori Nakata
National Institute of Occupational Safety and Health, Japan
Soc Sci Med 63:2452-63. 2006..The present study indicates an expected increase in the risk of, occupational injury for current and former smoking men and suggests that exposure to passive smoking is a possible risk factor for never smoking men... - [Measuring workplace climate: reliability and validity of the 12-item Organizational Climate Scale (OCS-12)]Satoe Fukui
Japan Society for the Promotion of Science, 5 3 1, Kojimachi, Chiyoda ku, Tokyo 102 8471, Japan
Sangyo Eiseigaku Zasshi 46:213-22. 2004..It is suggested that the OCS-12 could be a reliable and valid instrument for assessing workers' perception of workplace climate... - Shiftwork locus of control, situational and behavioural effects on sleepiness and fatigue in shiftworkersLawrence Smith
Shiftwork Research Group, Institute of Psychological Sciences, University of Leeds, Leeds LS2 9JT, UK
Ind Health 43:151-70. 2005..The results suggest control beliefs to be a moderating factor in shiftwork exposure and the potential utility of this construct in aiding more effective targeting of interventions... - Work organization and workers' safety and healthMasaya Takahashi
Ind Health 46:103-4. 2008 - Active and passive smoking and depression among Japanese workersAkinori Nakata
Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH 45226, USA
Prev Med 46:451-6. 2008..To assess the relation of passive and active smoking to depressive symptoms in 1839 men and 931 women working in a suburb of Tokyo in 2002... - MRI assessment of lung parenchymal motion in normal mice and transgenic mice with sickle cell diseaseShigeru Kiryu
Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
J Magn Reson Imaging 27:49-56. 2008..To test the feasibility of a method to quantify regional pulmonary parenchymal motion via nonrigid registration algorithm at small animal scales... - Changes in T1 and T2 observed in brain magnetic resonance imaging with delivery of high concentrations of oxygenHidemasa Uematsu
Department of Radiology, University of Fukui, Fukui, Japan
J Comput Assist Tomogr 31:662-5. 2007..The aim of this study was to clarify the relative contributions of the amount of oxygen in the blood, and vasoconstriction/dilation responsible for changes in T1 and T2 observed in brain during hyperoxia... - Incidence of pulmonary embolism in younger versus older patients using CTMasaomi Kuroki
Department of Radiology, Beth Israel Deaconess Medical Center, Brookline Avenue Boston, MA, USA
J Thorac Imaging 21:167-71. 2006.... - The phosphatidylethanolamine N-methyltransferase gene V175M single nucleotide polymorphism confers the susceptibility to NASH in Japanese populationHang Dong
Department of Gastroenterology and Hepatology, Kochi Medical School, Nankoku 783 8505, Japan
J Hepatol 46:915-20. 2007..The aim of this study was to investigate whether the carriers of Val175Met variant impaired in PEMT activity are more susceptible to NASH... - Perceived sleepiness of non-shift working men in two different types of work organizationKenji Fukasawa
Department of Basic Clinical Science and Public Health, Tokai University School of Medicine, Japan
J Occup Health 48:230-8. 2006..It is suggested that not only lifestyle and sleep habits, but also the characteristics and dynamics of a work organization should be a focus of attention when planning measures to prevent sleepiness at work... - Sleep-disordered breathing and hypertension in Japanese steel workersNoritada Kato
Department of Occupational Mental Health, Graduate School of Medical Science Kitasato University, 1 15 1 Kitasato, Sagamihara, Kanagawa 228 8555, Japan
Ind Health 46:233-8. 2008..low (<15) category of 3%ODI level was 2.86 (95% confidence interval, 1.23-6.66). The significant association between SDB and hypertension suggests that screening for SDB among steel workers is useful for prevention of hypertension...