Publishing type：Research paper (scientific journal)   Publisher：Wiley  

Aim

This cross‐sectional study aimed to investigate the associations between salivary testosterone concentrations and cognitive function in 70‐year‐old Japanese elderly people without dementia and stroke.

Methods

Participants were 197 Japanese community‐dwelling people aged 69–71 years. Their salivary samples were collected, and their cognitive function was assessed using the Japanese version of the Montreal Cognitive Assessment (MoCA‐J). Participants were also administered a 10‐item recall and a 24‐item recognition test. The data for 179 (106 men and 73 women) individuals were analyzed, excluding individuals with a past history of stroke and dementia. Multivariate logistic regression analyses were performed after adjusting for lifestyle factors and analyzing data separately for men and women.

Results

MoCA‐J scores showed that men with low testosterone concentrations had a significantly greater risk of low cognitive performance than those with high testosterone concentrations (adjusted odds ratio: 4.72, 95% confidence interval: 1.06–21.00), while no significant association was found in women. The 10‐item recall test scores showed that higher testosterone concentrations were significantly associated with greater recall in the second trial in women (standardized beta = 0.24, P = 0.040), whereas no significant association was found in men. Salivary testosterone concentrations were positively associated with better cognitive performance in older men and women.

Conclusions

The associations between salivary testosterone concentrations and cognitive function were shown by different tasks for men and women. Geriatr Gerontol Int 2022; 22: 1040–1046.

DOI： 10.1111/ggi.14504

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Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ggi.14504

Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.cpnec.2022.100158

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Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

DOI： 10.1007/s12529-021-10020-2

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Other Link： https://link.springer.com/article/10.1007/s12529-021-10020-2/fulltext.html

Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVE: The present study investigated associations between occupation, job stress, and salivary cortisol levels after psychological tasks. METHODS: We examined 766 (273 men and 493 women) healthy employed Japanese participants aged 21 to 68 years (mean age = 46.4 years, standard deviation = 8.5) with three types of occupation: manager, teacher, and general worker. The Brief Job Stress Questionnaire was used to evaluate participants' job stress levels, including job demand, job control, support from supervisors, and support from coworkers. Salivary cortisol levels were measured at pre-session, post-stressful tasks, and post-relaxation. All samples were assayed using an enzyme-linked immunosorbent assay test. Natural log transformation was applied before statistical analyses. A multiple regression analysis and a repeated measures analysis of covariance were conducted to test associations between occupation and salivary cortisol levels, adjusting for confounding factors. Statistical analyses were conducted separately for men and women. RESULTS: Among both men and women, general workers had higher cortisol levels than managers throughout the experimental session (men 0.6 μg/dL and 0.4 μg/dL, respectively; women 0.5 μg/dL and 0.4 μg/dL, respectively). Job control was positively associated with cortisol levels measured in all sessions, after adjusting for confounding factors (standardized beta 0.15, 0.21, and 0.18 for pre-session, post-stressful-tasks, and post-relaxation, respectively, all p < 0.05). Men with low support from coworkers had higher cortisol levels than those with high support through the sessions (0.6 μg/dL and 0.4 μg/dL, respectively). CONCLUSION: Socioeconomic disparity according to occupational status was related to cortisol levels in Japanese workers. Support from coworkers may be effective for reducing cortisol secretion in men.

DOI： 10.1007/s12529-021-10020-2

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Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.11236/jph.20-135

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Language：Japanese   Publisher：日本公衆衛生学会  

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Other Link： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2021&ichushi_jid=J01074&link_issn=&doc_id=20210604470001&doc_link_id=1390006762032361856&url=https%3A%2F%2Fcir.nii.ac.jp%2Fcrid%2F1390006762032361856&type=CiNii&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00003_3.gif

Language：Japanese   Publisher：日本公衆衛生学会  

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2021&ichushi_jid=J01074&link_issn=&doc_id=20210604470001&doc_link_id=10.11236%2Fjph.20-135&url=https%3A%2F%2Fdoi.org%2F10.11236%2Fjph.20-135&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

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OBJECTIVE: The purpose of the study was to investigate the association between andropause symptoms and sickness absence in Japanese male workers over 2 years. METHODS: A baseline survey asking about andropause symptoms, along with blood sampling for testosterone level, was conducted in June 2009. A total of 418 men (mean age = 52.4 years, SD = 8.6) participated and were followed through 2011. Hazard ratios (HRs) and 95% confidence intervals (CIs) for sickness absence were calculated using Cox proportional hazard models. RESULTS: During the follow-up period, 31 of 35 participants who took sickness absences had physical illnesses. A higher andropause symptom score was associated with an increased risk of sickness absence. Testosterone deficiency (<350 ng/dL) was not associated with sickness absence. Among the subscales of andropause symptoms, the somatic symptom score was positively associated with sickness absence, whereas testosterone deficiency combined with high sexual symptoms was not associated with sickness absence. Results were similar when limited to sickness absence because of physical illness. No significant interaction between andropause symptoms and testosterone deficiency was found. CONCLUSIONS: Non-specific andropause symptoms unrelated to testosterone deficiency were positively associated with sickness absence.

DOI： 10.1080/13685538.2020.1862078

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Language：Japanese   Publisher：日本公衆衛生学会  

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Language：English   Publishing type：Research paper (scientific journal)  

This study aimed to investigate associations between Brief Job Stress Questionnaire (BJSQ)-measured job stress factors and sickness absence in Japanese workers. Among 551 healthy, employed Japanese men and women (age range: 21-73 years) who underwent mental health examinations at the Osaka Medical Center for Health Science and Promotion between 2006 and 2009, 197 (67 men, 130 women) consented to participate in this study. Their sickness absences until the end of March 2010 were then followed-up via postal mail survey, with 112 participants effectively responding to the question on sickness absence (56.9%). The hazard ratio (HR) and 95% confidence interval (CI) were calculated using the Cox proportional hazards model, adjusting for age, sex, and lifestyle factors. Among the 112 respondents, 12 took sickness absence after their study entry, as found during the mean 2.3 years of follow-up (258.8 person-years). Among all sickness absences, those of eight participants were because of mental illness. Physical demands were positively associated with increased risks of all sickness absence (adjusted HR: 2.78, 95% CI: 1.01-7.64). Physical demands were predictive for all sickness absence, and should be alleviated at workplaces to prevent such absence.

DOI： 10.5387/fms.2019-15

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OBJECTIVE: We aimed to investigate associations between cardiovascular reactivity to acute stress and sickness absence among Japanese male and female workers, in a prospective study. METHODS: Among healthy employed Japanese workers who underwent mental health checks between 2006 and 2009, data of 111 participants were analyzed. Changes in blood pressure, pulse rate, peripheral blood flow (PBF), and heart rate variability (HRV) (high frequency [HF] and low frequency [LF]) were calculated using differences between the two tasks, mirror drawing stress [MDS] and a maze task, and the postperiod value. Sickness absence through March 2010 was followed up by mail survey (average follow-up 2.3 years). Logistic regression analysis was used, adjusting for lifestyle factors. RESULTS: Among 12 participants who took sickness absences, eight were owing to mental problems. Changes in the LF during the MDS and maze tasks and LF-to-HF ratio during the MDS task were positively associated with all sickness absences (odds ratio [OR], 95% confidence interval [CI]: 2.09, 1.03-4.22; 2.04, 1.09-3.82; and 3.10, 1.46-6.58, respectively). Changes in PBF during the MDS task were also associated with increased risk of sickness absence (OR, 95% CI: 2.53, 1.10-5.81). CONCLUSION: Cardiovascular reactivity to acute stress should be considered at workers' health checks.

DOI： 10.1002/brb3.1541

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The purpose of the present study was to investigate associations of dietary intake including vitamin D, folate, and n-3 and n-6 polyunsaturated fatty acids (PUFA) in pregnant women with broad autism phenotype (BAP). The Japan Environment and Children's Study is a government-funded birth cohort study. All complete data of 92,011 were analyzed. The Japanese version of the Autism Spectrum Quotient was used to assess mothers' BAP level, and a food frequency questionnaire was used to estimate their dietary intake. Mothers with BAP consumed less vegetables, fruits, and fish and shellfish, and they consumed lower folate, vitamin C, vitamin D, and n-3 PUFA than their counterparts. Dietary intervention should be considered for pregnant women with high BAP scores.

DOI： 10.1007/s10803-020-04380-z

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier {BV}  

BACKGROUND: Broader autism phenotype (BAP) refers to the expression of behavioral and cognitive dispositions similar to autism spectrum disorder. The present study investigated whether mothers' BAP was prospectively associated with maternal attachment, and if postpartum depression modified this association. METHODS: The Japan Environment and Children's Study (JECS) is a national and government-funded birth cohort study that began in January 2011. Among the 103,099 mothers enrolled, 87,369 mothers without a history of depression were included in the analysis. Self-administered questionnaires were used. These included: the Japanese version of the Autism Spectrum Quotient, the Mother to Infant Bonding Scale, and the Edinburgh Postnatal Depression Scale. Logistic regression analyses were performed. RESULTS: The BAP during the second or third trimester of pregnancy was linearly associated with an increased risk of postpartum depression and insecure maternal attachment when infants were one month old (p for trend < 0.001), after adjusting for confounding variables. When stratified by postpartum depression, among the BAP subscales, deficiencies in social skills and communication were associated with an increased risk of insecure maternal attachment in mothers without postpartum depression. The relationships between the BAP subscales and maternal attachment were attenuated among mothers with postpartum depression. LIMITATIONS: Only five items of the Mother to Infant Bonding Scale were used in the present study, and thus the results should be interpreted with caution. CONCLUSIONS: Mothers' BAP was predictive of insecure maternal attachment toward their infant. Postpartum depression partially moderated the associations between mothers' BAP and insecure maternal attachment.

DOI： 10.1016/j.jad.2018.09.060

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This study aimed to characterize the relationship between the ratio of the length of the second and fourth fingers (2D:4D value) and the speed of sound of the calcaneus by quantitative ultrasound (QUS-SOS) in undergraduate female students. We recruited 138 young women with a mean age of 19.6 ± 1.4 years. The participants' calcaneus QUS-SOS was measured using an ultrasound bone densitometer. We also measured the participants' weight, height, and grip strength. A self-reported questionnaire was used to obtain information on participants' secondary sexual characteristics, and exercise habits. The present study showed that the 2D:4D value of both hands was significantly correlated with the calcaneus QUS-SOS. The 2D:4D value of the left hand was also positively associated with the calcaneus QUS-SOS results in several respects. These findings suggest that the 2D:4D value may be useful for the screening of risk for a low bone quality in undergraduate female students.

DOI： 10.1038/s41598-018-33056-z

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Publishing type：Research paper (scientific journal)   Publisher：Springer Nature  

DOI： 10.1007/s12529-017-9700-1

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Language：English   Publisher：Elsevier {BV}  

This study aimed to investigate the effects of occupational status and job stress factors on cardiovascular stress reactivity in Japanese workers. In this baseline assessment between 2001 and 2009 in Osaka, Japan, we examined 928 healthy Japanese employees (330 men, 598 women) from two occupational statuses: managers/professionals and general workers. A brief job stress questionnaire was used to evaluate job stress levels. Systolic and diastolic blood pressure (SBP, DBP), heart rate, heart rate variability (high-frequency [HF], low-frequency [LF], LF/HF], and peripheral blood flow were measured at rest and during two stressful tasks. Changes in stress reactivity were calculated as the difference between the measured variables during the tasks and the rest period. Men showed inverse associations between quantitative job overload and DBP, heart rate, and LF/HF, between physical demands and blood pressure (SBP, DBP), and between a poor physical environment and HF. Men also had positive associations between qualitative job overload and heart rate, and between physical demands and peripheral blood flow (all p < 0.05). Women showed inverse associations between qualitative job overload and SBP, and showed positive associations between qualitative job overload and peripheral blood flow, and between a poor physical environment and SBP (all p < 0.05). When stratified by occupational status, significant associations between job stress and changes in stress reactivity were observed in male managers/professionals and female general workers (p < 0.05). Job stress levels are associated with changes in cardiovascular stress reactivity in men and women. Occupational status may modify these associations.

DOI： 10.1016/j.pmedr.2016.05.010

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DOI： 10.1007/s12529-015-9530-y

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DOI： 10.1016/j.psyneuen.2016.04.005

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：National Institute of Industrial Health  

DOI： 10.2486/indhealth.2015-0113

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DOI： 10.2486/indhealth.2014-0206

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Language：Japanese   Publisher：National Institute of Industrial Health  

The purpose of the present study was to clarify the current status of psychiatric services and return to work programs within occupational mental health services provided by psychiatric hospitals and clinics in Osaka prefecture. The study focused on whether employment of occupational health physicians and psychological specialists was associated with providing of occupational mental health services. A self-administered questionnaire was mailed to 470 psychiatric hospitals and clinics in Osaka prefecture in 2013. A total of 215 organizations responded (response rate=45.7%). In the psychiatric organizations studied, 46.5% of clinical psychologists and 34.0% of psychiatric social workers who were employed as psychological specialists. Psychiatric medical organization reporting the employment of occupational health physicians was 48.4%. Organizations providing return to work programs was 19.5%; of those that did not provide such programs, 17.7% reported that they would do so in the future. The employment of occupational health physicians increased the percentages of providing of return to work programs. The employment of psychological specialists increased the percentages of psychological counseling services and return to work programs. To provisions of counselling and return to work programs, the employment of occupational health physicians and psychological specialists may be important factors.

DOI： 10.2486/josh.JOSH-2015-0015-CHO

DOI： 10.2486/josh.josh-2015-0015-cho

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DOI： 10.1007/s12529-014-9403-9

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DOI： 10.1097/PSY.0000000000000121

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DOI： 10.1097/PSY.0000000000000121

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Language：Japanese   Publisher：(公社)日本産業衛生学会  

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DOI： 10.3390/ijerph10104560

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DOI： 10.2466/13.15.PMS.114.1.111-122

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DOI： 10.1539/sangyoeisei.B11003

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DOI： 10.1007/s11199-011-9992-6

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Language：Japanese   Publisher：日本公衆衛生学会  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japan Society for Occupational Health  

DOI： 10.1539/joh.O9011

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Language：Japanese   Publisher：Okayama prefectural university  

DOI： 10.15009/00000618

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Other Link： http://id.nii.ac.jp/1212/00000618/

Language：Japanese   Publisher：日本公衆衛生学会  

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DOI： 10.1016/j.paid.2009.01.026

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Language：English   Publishing type：Part of collection (book)   Publisher：Nova Science Publishers, Inc.  

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DOI： 10.1539/joh.L7154

DOI： 10.1539/joh.l7154

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DOI： 10.1016/j.appet.2008.03.015

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DOI： 10.2466/PR0.103.1.3-10

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DOI： 10.2466/PR0.103.1.3-10

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DOI： 10.2188/jea.JE2007421

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DOI： 10.1016/j.atherosclerosis.2007.09.035

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DOI： 10.18926/AMO/30959

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DOI： 10.18926/AMO/32874

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DOI： 10.2466/PMS.105.2.403-404

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DOI： 10.18926/AMO/32902

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DOI： 10.1007/s11199-007-9190-8

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DOI： 10.1177/1066480706293539

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DOI： 10.1007/s10654-006-9049-2

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DOI： 10.1007/s11199-006-9097-9

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DOI： 10.1016/j.socscimed.2006.03.028

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DOI： 10.1111/j.1467-839X.2006.00190.x

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DOI： 10.1007/s00420-005-0027-x

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Language：Japanese   Publisher：日本公衆衛生学会  

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Language：Japanese   Publisher：Japan Society for Occupational Health  

"The Checklist for Evaluation of Mental Health Activities at the Workplace" was developed for workplace staff evaluating mental health activities in their own workplace. The validity and reliability of the checklist were examined and criteria for evaluation were developed for workplace/organization/companies with 50 or more employees in Japan. The checklist initially included 33 items covering seven major domains of occupational mental health, with a four-point response option, based on the Japanese Guideline for Worker Mental Health in the Workplace and a relevant literature review. A questionnaire was send to 60 members of the Occupational Mental Health Committee (OMHC) of the Japan Society for Occupational Health to ask their opinions on the checklist and on the minimum requirement for each item on the checklist; 30 (50%) responded. A random sample of 1,335 workplaces from a contractor list of workplaces for worker compensation insurance and a questionnaire was send to the personnel department to fill in the checklist; 412 (31.5%) responded and data from 335 of them with 50 or more employees were analyzed. Some OMHC members felt that one of the items (concerning the Total Health Promotion program) should be dropped; thus the checklist was revised to include 32 items, still covering the seven domains. Based on the workplace survey data, most domain scales showed internal consistency reliability at an acceptable level; explanatory factor analysis yielded a four-factor structure that was well concordant with the hypnotized seven-domain structure. Three levels of adequacy of mental health activities were set for each domain scale: "red" (inadequate), "yellow" (minimal), and "green" (adequate). One third of occupational health professionals from 49 workplaces rated the evaluation result based on the checklist as concordant with their view; 95% of them said the checklist would be useful in promoting occupational mental health activities. The study indicated that the checklist had reliability (based on internal consistency reliability) and content- and construct-validity (based on expert opinions, a factor-structure concordant with empirical data, and evaluation by workplace staff). The checklist seems useful in promoting occupational mental health activities. (San Ei Shi 2005; 47: 11-32)<br>

DOI： 10.1539/sangyoeisei.47.11

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Language：Japanese   Publisher：Japan Society for Occupational Health  

"The Checklist for Evaluation of Mental Health Activities at the Workplace" was developed for workplace staff evaluating mental health activities in their own workplace. The validity and reliability of the checklist were examined and criteria for evaluation were developed for workplace/organization/companies with 50 or more employees in Japan. The checklist initially included 33 items covering seven major domains of occupational mental health, with a four-point response option, based on the Japanese Guideline for Worker Mental Health in the Workplace and a relevant literature review. A questionnaire was send to 60 members of the Occupational Mental Health Committee (OMHC) of the Japan Society for Occupational Health to ask their opinions on the checklist and on the minimum requirement for each item on the checklist; 30 (50%) responded. A random sample of 1,335 workplaces from a contractor list of workplaces for worker compensation insurance and a questionnaire was send to the personnel department to fill in the checklist; 412 (31.5%) responded and data from 335 of them with 50 or more employees were analyzed. Some OMHC members felt that one of the items (concerning the Total Health Promotion program) should be dropped; thus the checklist was revised to include 32 items, still covering the seven domains. Based on the workplace survey data, most domain scales showed internal consistency reliability at an acceptable level; explanatory factor analysis yielded a four-factor structure that was well concordant with the hypnotized seven-domain structure. Three levels of adequacy of mental health activities were set for each domain scale: "red" (inadequate), "yellow" (minimal), and "green" (adequate). One third of occupational health professionals from 49 workplaces rated the evaluation result based on the checklist as concordant with their view; 95% of them said the checklist would be useful in promoting occupational mental health activities. The study indicated that the checklist had reliability (based on internal consistency reliability) and content- and construct-validity (based on expert opinions, a factor-structure concordant with empirical data, and evaluation by workplace staff). The checklist seems useful in promoting occupational mental health activities. (San Ei Shi 2005; 47: 11-32)<br>

DOI： 10.1539/sangyoeisei.47.11

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DOI： 10.1038/sj.ejcn.1602042

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Publisher：The Japanese Society for Cognitive Psychology  

The purpose of this study is to investigate whether gender differences between pairs of eyewitnesses influence their collaborative recall. Using the MORI technique (Mori, 2003), two different images can be presented on a single screen and viewed separately by two groups of participants through polarizing filters, so that they are unaware of actually viewing two different overlapping images. The participants in this study were 48 undergraduates, assigned to one of three groups: a) eight male pairs, b) eight female pairs, and c) eight mixed-gender pairs. Wearing polarizing sunglasses, the members of each pairing observed two slightly different versions of an event projected on the same screen. The participants were asked initially to report individually on what they had observed (pre-discussion report), and then to discuss the event with the other member of the pairing and make a consensus report (post-discussion report). After one week, the participants were again asked to report individually on their recollections for the event (week-later report). The results indicated that memory performance for female pairs improved significantly in the post-discussion and the week-later reports. An increase in memory performance for male pairs was only found in the post-discussion report. However, no significant improvements in memory scores for the mixed-gender pairs were observed in any of their reports.

DOI： 10.5265/jcogpsy.3.83

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Language：Japanese   Publisher：公益社団法人 日本産業衛生学会  

DOI： 10.1539/sangyoeisei.KJ00003804265

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Language：Japanese   Publisher：日本公衆衛生学会  

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DOI： 10.1023/b:sers.0000032317.18968.7e

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DOI： 10.1111/j.1471-0528.2004.00130.x

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DOI： 10.2466/pms.98.2.463-472

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DOI： 10.1016/S0022-3999(03)00046-1

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DOI： 10.2224/sbp.2004.32.8.731

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Psychological Association  

DOI： 10.4992/jjpsy.75.420

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Psychological Association  

DOI： 10.4992/jjpsy.75.420

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DOI： 10.2224/sbp.2002.30.2.203

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Psychology Press Ltd  

DOI： 10.1080/00207590244000160A

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DOI： 10.2224/sbp.2001.29.4.375

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DOI： 10.1111/1468-5884.00135

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DOI： 10.2224/sbp.2000.28.4.343

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Language：English   Publishing type：Research paper, summary (international conference)  

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Language：Japanese   Publisher：メディカ出版  

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Other Link： http://search.jamas.or.jp/link/ui/2013212524

Language：Japanese   Publisher：Baika Women's University  

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Other Link： http://search.jamas.or.jp/link/ui/2014396070

Language：English   Publishing type：Research paper, summary (international conference)  

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Language：Japanese   Publisher：Japan Society for Occupational Health  

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Language：Japanese   Publisher：じほう  

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Other Link： http://search.jamas.or.jp/link/ui/2006013236

Publisher：The Japanese Society for Cognitive Psychology  

The purpose of this study is to investigate whether gender differences between pairs of eyewitnesses influence their collaborative recall. Using the MORI technique (Mori, 2003), two different images can be presented on a single screen and viewed separately by two groups of participants through polarizing filters, so that they are unaware of actually viewing two different overlapping images. The participants in this study were 48 undergraduates, assigned to one of three groups: a) eight male pairs, b) eight female pairs, and c) eight mixed-gender pairs. Wearing polarizing sunglasses, the members of each pairing observed two slightly different versions of an event projected on the same screen. The participants were asked initially to report individually on what they had observed (pre-discussion report), and then to discuss the event with the other member of the pairing and make a consensus report (post-discussion report). After one week, the participants were again asked to report individually on their recollections for the event (week-later report). The results indicated that memory performance for female pairs improved significantly in the post-discussion and the week-later reports. An increase in memory performance for male pairs was only found in the post-discussion report. However, no significant improvements in memory scores for the mixed-gender pairs were observed in any of their reports.

DOI： 10.5265/jcogpsy.3.83

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Language：Japanese   Publisher：公益社団法人日本産業衛生学会  

DOI： 10.1539/sangyoeisei.KJ00003804457

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Language：Japanese  

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Language：Japanese   Publisher：中部人間学会  

CiNii Books

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Language：English   Publishing type：Research paper, summary (international conference)  

Web of Science

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DOI： 10.1023/A:1014906820573

Scopus

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