Ichiro Oyama

493 total citations
17 papers, 373 citations indexed

About

Ichiro Oyama is a scholar working on General Health Professions, Experimental and Cognitive Psychology and Pharmacology. According to data from OpenAlex, Ichiro Oyama has authored 17 papers receiving a total of 373 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in General Health Professions, 6 papers in Experimental and Cognitive Psychology and 5 papers in Pharmacology. Recurrent topics in Ichiro Oyama's work include Workplace Health and Well-being (11 papers), Sleep and Work-Related Fatigue (6 papers) and Musculoskeletal pain and rehabilitation (5 papers). Ichiro Oyama is often cited by papers focused on Workplace Health and Well-being (11 papers), Sleep and Work-Related Fatigue (6 papers) and Musculoskeletal pain and rehabilitation (5 papers). Ichiro Oyama collaborates with scholars based in Japan, United States and Germany. Ichiro Oyama's co-authors include Yoshihisa Fujino, Tatsuhiko Kubo, Shinya Matsuda, Hiroyuki Izumi, Takehiro Nakamura, Koji Kadowaki, Tomohisa Nagata, Tetsuro Matsumoto, Hajime Otomo and Keiji Muramatsu and has published in prestigious journals such as Occupational and Environmental Medicine, BMJ Open and The Journal of Steroid Biochemistry and Molecular Biology.

In The Last Decade

Ichiro Oyama

16 papers receiving 364 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ichiro Oyama Japan 10 173 143 73 65 40 17 373
Hikari Furui Japan 6 247 1.4× 97 0.7× 37 0.5× 90 1.4× 48 1.2× 9 407
C.R.L. Boot Netherlands 9 127 0.7× 114 0.8× 44 0.6× 19 0.3× 65 1.6× 14 347
Suzanne L. Merkus Norway 10 220 1.3× 201 1.4× 50 0.7× 78 1.2× 40 1.0× 23 395
Kati Karhula Finland 17 415 2.4× 463 3.2× 54 0.7× 162 2.5× 26 0.7× 37 686
Jenny-Anne Lie Norway 12 168 1.0× 333 2.3× 178 2.4× 106 1.6× 95 2.4× 19 599
Hideto Harada Japan 6 146 0.8× 227 1.6× 77 1.1× 34 0.5× 56 1.4× 7 327
Kumihiko ­Tanaka Japan 13 200 1.2× 334 2.3× 199 2.7× 57 0.9× 179 4.5× 18 694
Yuko Yagi Japan 8 121 0.7× 162 1.1× 34 0.5× 34 0.5× 42 1.1× 13 389
D. Rose France 7 53 0.3× 68 0.5× 30 0.4× 26 0.4× 55 1.4× 24 285
Maryam Saraei Iran 10 61 0.4× 111 0.8× 33 0.5× 14 0.2× 68 1.7× 32 289

Countries citing papers authored by Ichiro Oyama

Since Specialization
Citations

This map shows the geographic impact of Ichiro Oyama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ichiro Oyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ichiro Oyama more than expected).

Fields of papers citing papers by Ichiro Oyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ichiro Oyama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ichiro Oyama. The network helps show where Ichiro Oyama may publish in the future.

Co-authorship network of co-authors of Ichiro Oyama

This figure shows the co-authorship network connecting the top 25 collaborators of Ichiro Oyama. A scholar is included among the top collaborators of Ichiro Oyama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ichiro Oyama. Ichiro Oyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

17 of 17 papers shown
1.
Fujisawa, Yasuko, Shinichiro Sano, Y Murai, et al.. (2025). Production of 11-ketotestosterone in childhood adrenal tumors with virilization or peripheral precocious puberty: Dominant expression of 11β-hydroxysteroid dehydrogenase type 2. The Journal of Steroid Biochemistry and Molecular Biology. 251. 106747–106747.
2.
Nagata, Tomohisa, Daisuke Ito, Masako Nagata, et al.. (2021). Anticipated health effects and proposed countermeasures following the immediate introduction of telework in response to the spread of COVID-19: The findings of a rapid health impact assessment in Japan. Journal of Occupational Health. 63(1). e12198–e12198. 23 indexed citations
3.
Nagata, Tomohisa, et al.. (2017). Diagnostic Accuracy of the Work Functioning Impairment Scale (WFun). Journal of Occupational and Environmental Medicine. 59(6). 557–562. 38 indexed citations
4.
Fujino, Yoshihisa, et al.. (2017). Validity and responsiveness of the work functioning impairment scale (WFun) in workers with pain due to musculoskeletal disorders. Journal of Occupational Health. 60(2). 156–162. 22 indexed citations
5.
Fujino, Yoshihisa, Hiroyuki Izumi, Keiji Muramatsu, et al.. (2016). Prospective Cohort Study of Work Functioning Impairment and Subsequent Absenteeism Among Japanese Workers. Journal of Occupational and Environmental Medicine. 58(7). e264–e267. 17 indexed citations
6.
Nakamura, Takehiro, Ichiro Oyama, Yoshihisa Fujino, et al.. (2016). Evaluation and simplification of the occupational slip, trip and fall risk-assessment test. Industrial Health. 54(4). 354–360. 7 indexed citations
7.
Fujino, Yoshihisa, Hiroyuki Izumi, Tomohisa Nagata, et al.. (2015). Development and validity of a work functioning impairment scale based on the Rasch model among Japanese workers. Journal of Occupational Health. 57(6). 521–531. 72 indexed citations
8.
Fujino, Yoshihisa, et al.. (2013). A cross-sectional study of workplace social capital and blood pressure: a multilevel analysis at Japanese manufacturing companies. BMJ Open. 3(2). e002215–e002215. 13 indexed citations
9.
Kubo, Tatsuhiko, Yoshihisa Fujino, Takehiro Nakamura, et al.. (2013). An Industry-Based Cohort Study of the Association Between Weight Gain and Hypertension Risk Among Rotating Shift Workers. Journal of Occupational and Environmental Medicine. 55(9). 1041–1045. 34 indexed citations
10.
Oyama, Ichiro, Tatsuhiko Kubo, Yoshihisa Fujino, et al.. (2012). Retrospective cohort study of the risk of impaired glucose tolerance among shift workers. Scandinavian Journal of Work Environment & Health. 38(4). 337–342. 24 indexed citations
11.
Kubo, Tatsuhiko, Ichiro Oyama, Takehiro Nakamura, et al.. (2011). Industry‐based retrospective cohort study of the risk of prostate cancer among rotating‐shift workers. International Journal of Urology. 18(3). 206–211. 57 indexed citations
12.
Kubo, Tatsuhiko, et al.. (2011). Practical Use of DPC Information for Occupational Health Consultation. SANGYO EISEIGAKU ZASSHI. 53(4). 140–140. 1 indexed citations
13.
Kubo, Tatsuhiko, Ichiro Oyama, & Yoshihisa Fujino. (2011). Response to Counter‐clockwise shift‐work and prostate cancer: Putting pieces in the puzzle (Author's Reply). International Journal of Urology. 18(8). 613–613. 1 indexed citations
14.
Kubo, Tatsuhiko, Ichiro Oyama, Takehiro Nakamura, et al.. (2010). Retrospective cohort study of the risk of obesity among shift workers: findings from the Industry-based Shift Workers' Health study, Japan. Occupational and Environmental Medicine. 68(5). 327–331. 58 indexed citations
15.
Fujino, Yoshihisa, Tomohisa Nagata, Seitaro Dohi, et al.. (2009). Health Impact Assessment of Occupational Health Policy Reform at a Multinational Chemical Company in Japan. SANGYO EISEIGAKU ZASSHI. 51(5). 60–60. 2 indexed citations
16.
Kubo, Tatsuhiko, et al.. (2008). Anxiety about Starting Three-Shift Work among Female Workers : Findings from the Female Shift Workers' Health Study. Journal of UOEH. 30(1). 1–10. 3 indexed citations
17.
Kajiki, Shigeyuki, et al.. (2006). Interview study on occupational safety and health problems associated with diversification of employment status. International Congress Series. 1294. 194–196. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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