Mari Oyama

600 total citations
25 papers, 473 citations indexed

About

Mari Oyama is a scholar working on Orthopedics and Sports Medicine, Surgery and Pathology and Forensic Medicine. According to data from OpenAlex, Mari Oyama has authored 25 papers receiving a total of 473 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Orthopedics and Sports Medicine, 9 papers in Surgery and 4 papers in Pathology and Forensic Medicine. Recurrent topics in Mari Oyama's work include Bone health and osteoporosis research (10 papers), Hip and Femur Fractures (6 papers) and Vitamin D Research Studies (4 papers). Mari Oyama is often cited by papers focused on Bone health and osteoporosis research (10 papers), Hip and Femur Fractures (6 papers) and Vitamin D Research Studies (4 papers). Mari Oyama collaborates with scholars based in Japan, Chile and Australia. Mari Oyama's co-authors include Kazutoshi Nakamura, Yasuo Tsuchiya, Toshiko Saito, Masaharu Yamamoto, Rieko Oshiki, Ryosaku Kobayashi, Mitsue Nashimoto, Osamu Yamazaki, Toshiyuki Someya and Toshikazu Nishiwaki and has published in prestigious journals such as Journal of Bone and Mineral Research, Heart and Osteoporosis International.

In The Last Decade

Mari Oyama

23 papers receiving 454 citations

Peers

Mari Oyama
Yumi Yaegashi Japan
Yinjuan Lian United States
Alda Storari Italy
Kate Maslin United Kingdom
M. Kathleen Figaro United States
Christina Rosebush United States
Zhiwei Gao Canada
Hyung Yun Choi South Korea
Fumikazu Hayashi Japan
Nicolaas Nagelkerke United Arab Emirates
Yumi Yaegashi Japan
Mari Oyama
Citations per year, relative to Mari Oyama Mari Oyama (= 1×) peers Yumi Yaegashi

Countries citing papers authored by Mari Oyama

Since Specialization
Citations

This map shows the geographic impact of Mari 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 Mari Oyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Mari Oyama more than expected).

Fields of papers citing papers by Mari Oyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Mari 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 Mari Oyama. The network helps show where Mari Oyama may publish in the future.

Co-authorship network of co-authors of Mari Oyama

This figure shows the co-authorship network connecting the top 25 collaborators of Mari Oyama. A scholar is included among the top collaborators of Mari 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 Mari Oyama. Mari Oyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Oyama, Mari, et al.. (2011). Social network disruption as a major factor associated with psychological distress 3 years after the 2004 Niigata–Chuetsu earthquake in Japan. Environmental Health and Preventive Medicine. 17(2). 118–123. 52 indexed citations
2.
Kitamura, Kaori, Kazutoshi Nakamura, Ryosaku Kobayashi, et al.. (2011). Physical activity and 5-year changes in physical performance tests and bone mineral density in postmenopausal women: The Yokogoshi Study. Maturitas. 70(1). 80–84. 8 indexed citations
3.
Nakamura, Kazutoshi, Mari Oyama, Toshiko Saito, et al.. (2011). Nutritional and biochemical parameters associated with 6-year change in bone mineral density in community-dwelling Japanese women aged 69 years and older: The Muramatsu Study. Nutrition. 28(4). 357–361. 12 indexed citations
4.
Nakamura, Kazutoshi, Toshiko Saito, Mari Oyama, et al.. (2010). Vitamin D sufficiency is associated with low incidence of limb and vertebral fractures in community-dwelling elderly Japanese women: the Muramatsu Study. Osteoporosis International. 22(1). 97–103. 45 indexed citations
5.
Nakamura, Kazutoshi, Rieko Oshiki, Ryosaku Kobayashi, et al.. (2010). Postural sway velocity predicts osteoporotic fracture in community-dwelling elderly Japanese women: the Muramatsu Study. Age and Ageing. 40(1). 132–135. 6 indexed citations
6.
Oyama, Mari, Toshiko Saito, & Kazutoshi Nakamura. (2010). Rapid weight gain in early infancy is associated with adult body fat percentage in young women. Environmental Health and Preventive Medicine. 15(6). 381–385. 10 indexed citations
7.
Nakamura, Kazutoshi, Toshiko Saito, Ryosaku Kobayashi, et al.. (2010). C-reactive protein predicts incident fracture in community-dwelling elderly Japanese women: the Muramatsu study. Osteoporosis International. 22(7). 2145–2150. 54 indexed citations
8.
Tsuchiya, Yasuo, Sergio Báez, Alfonso Calvo, et al.. (2010). Evidence that Genetic Variants of Metabolic Detoxication and Cell Cycle Control Are Not Related to Gallbladder Cancer Risk in Chilean Women. The International Journal of Biological Markers. 25(2). 75–78. 15 indexed citations
9.
Nakamura, Kazutoshi, Mari Oyama, Mitsue Nashimoto, et al.. (2009). Incidence and risk factors associated with hip fracture in institutionalised elderly people in Japan. Age and Ageing. 38(4). 478–482. 10 indexed citations
10.
Nakamura, Kazutoshi, Mari Oyama, Osamu Yamazaki, et al.. (2009). Long-term effects of the Niigata-Chuetsu earthquake in Japan on acute myocardial infarction mortality: an analysis of death certificate data. Heart. 95(24). 2009–2013. 62 indexed citations
11.
Nakamura, Kazutoshi, Shunsuke Takahashi, Mari Oyama, et al.. (2009). Prior nonhip limb fracture predicts subsequent hip fracture in institutionalized elderly people. Osteoporosis International. 21(8). 1411–1416. 6 indexed citations
12.
Nakamura, Kazutoshi, et al.. (2009). Prevalence of attention-deficit/hyperactivity disorder (ADHD) symptoms in preschool children: discrepancy between parent and teacher evaluations. Environmental Health and Preventive Medicine. 14(2). 150–154. 26 indexed citations
13.
Nakamura, Kazutoshi, Mari Oyama, Shunsuke Takahashi, et al.. (2009). Fracture incidence in nursing homes in Japan. Osteoporosis International. 21(5). 797–803. 10 indexed citations
14.
Maruyama, Keiko, Kazutoshi Nakamura, Mitsue Nashimoto, et al.. (2009). Bone fracture in physically disabled children attending schools for handicapped children in Japan. Environmental Health and Preventive Medicine. 15(3). 135–140. 12 indexed citations
15.
Nakamura, Kazutoshi, Junichiro James Kazama, Yoshifumi Tanaka, et al.. (2009). Microscopic hematuria is associated with low bone mineral density in aged women and men. Journal of Bone and Mineral Metabolism. 27(2). 251–254.
16.
Nakamura, Kazutoshi, Toshiko Saito, Akihiro Yoshihara, et al.. (2009). Low calcium intake is associated with increased bone resorption in postmenopausal Japanese women: Yokogoshi Study. Public Health Nutrition. 12(12). 2366–2370. 12 indexed citations
17.
Oyama, Mari, Kazutoshi Nakamura, Yasuo Tsuchiya, & Masaharu Yamamoto. (2009). Unhealthy Maternal Lifestyle Leads to Rapid Infant Weight Gain: Prevention of Future Chronic Diseases. The Tohoku Journal of Experimental Medicine. 217(1). 67–72. 19 indexed citations
18.
Kimura, Akira, Yasuo Tsuchiya, István Láng, et al.. (2009). Effect of genetic predisposition on the risk of gallbladder cancer in Hungary.. PubMed. 9(3). 391–6. 17 indexed citations
19.
Fujimori, A., et al.. (2007). Low-calcium dialysate improves mineral metabolism in hemodialysis patients. Clinical Nephrology. 67(1). 20–24. 12 indexed citations
20.
Oyama, Mari, et al.. (2007). [Fracture-related medical cost of aged people in Niigata Prefecture, Japan: analysis of data from health insurance claims].. PubMed. 62(4). 967–75. 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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