Narumi Kojima

1.8k total citations
71 papers, 1.3k citations indexed

About

Narumi Kojima is a scholar working on Physiology, Geriatrics and Gerontology and Psychiatry and Mental health. According to data from OpenAlex, Narumi Kojima has authored 71 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Physiology, 23 papers in Geriatrics and Gerontology and 22 papers in Psychiatry and Mental health. Recurrent topics in Narumi Kojima's work include Nutrition and Health in Aging (36 papers), Frailty in Older Adults (23 papers) and Dementia and Cognitive Impairment Research (11 papers). Narumi Kojima is often cited by papers focused on Nutrition and Health in Aging (36 papers), Frailty in Older Adults (23 papers) and Dementia and Cognitive Impairment Research (11 papers). Narumi Kojima collaborates with scholars based in Japan, South Korea and United States. Narumi Kojima's co-authors include Hunkyung Kim, Miji Kim, Hideyo Yoshida, Erika Hosoi, Takao Suzuki, Hirohiko Hirano, Yosuke Osuka, Kyoko Saito, Yuko Yoshida and Hiroyuki Sasai and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and American Journal of Clinical Nutrition.

In The Last Decade

Narumi Kojima

62 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Narumi Kojima Japan	17	910	430	262	157	110	71	1.3k
Francisco Miguel Martínez‐Arnau Spain	18	661 0.7×	463 1.1×	182 0.7×	106 0.7×	90 0.8×	61	1.3k
Michal Šteffl Czechia	18	850 0.9×	241 0.6×	157 0.6×	178 1.1×	180 1.6×	50	1.4k
Sophie Gillain Belgium	15	971 1.1×	437 1.0×	442 1.7×	128 0.8×	110 1.0×	47	1.7k
Mathieu Maltais France	15	621 0.7×	166 0.4×	152 0.6×	130 0.8×	151 1.4×	35	1.0k
Chikako Tange Japan	21	651 0.7×	321 0.7×	198 0.8×	361 2.3×	37 0.3×	92	1.4k
Yosuke Osuka Japan	16	462 0.5×	255 0.6×	246 0.9×	123 0.8×	39 0.4×	99	872
Diana G. Taekema Netherlands	10	691 0.8×	275 0.6×	223 0.9×	156 1.0×	32 0.3×	15	1.1k
Ana Alfaro‐Acha Spain	18	912 1.0×	594 1.4×	285 1.1×	126 0.8×	43 0.4×	29	1.4k
Ana Rodriguez‐Larrad Spain	18	496 0.5×	282 0.7×	148 0.6×	66 0.4×	57 0.5×	58	997
Makiko Tomida Japan	19	578 0.6×	285 0.7×	151 0.6×	299 1.9×	31 0.3×	54	1.0k

Countries citing papers authored by Narumi Kojima

Since Specialization

Citations

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

Fields of papers citing papers by Narumi Kojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Narumi Kojima

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

All Works

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20 of 20 papers shown

Osuka, Yosuke, et al.. (2025). Association of potentially inappropriate medications with frailty and frailty components in community‐dwelling older women in Japan: The Otassha Study. Geriatrics and gerontology international. 25(5). 686–693.

Kojima, Narumi, Yosuke Osuka, Hiroyuki Sasai, et al.. (2025). Lower Firmicutes abundance in gut microbiota associated with amyloid-β positivity in older adults in Japan as assessed by positron emission tomography. PLoS ONE. 20(10). e0332801–e0332801.

Ohta, Takahisa, Narumi Kojima, Yosuke Osuka, & Hiroyuki Sasai. (2024). Physical frailty predicts cognitive decline among community-dwelling older Japanese women: A prospective cohort study from the Otassha study. Archives of Gerontology and Geriatrics. 124. 105453–105453.

Takeshima, Nobuo, Eiji Fujita, Yosuke Osuka, et al.. (2024). Potential of Kinect-assessed stepping test for assessing fall risk in community-dwelling older women. SHILAP Revista de lepidopterología. 1(4). 100077–100077.

Osuka, Yosuke, Narumi Kojima, Keiko Motokawa, et al.. (2024). Sex-specific factors associated with acceptance of smartwatches among urban older adults: the Itabashi longitudinal study on aging. Frontiers in Public Health. 12. 1261275–1261275. 2 indexed citations

Osuka, Yosuke, Narumi Kojima, Takuya Omura, et al.. (2024). Effects of Radio-Taiso on Health-related Quality of Life in Older Adults With Frailty: a Randomized Controlled Trial. Journal of Epidemiology. 34(10). 467–476. 1 indexed citations

Abe, Takumi, Yoshinori Fujiwara, Akihiko Kitamura, et al.. (2024). Higher‐level competence: Results from the Integrated Longitudinal Studies on Aging in Japan (ILSA‐J) on the shape of associations with impaired physical and cognitive functions. Geriatrics and gerontology international. 24(4). 352–358. 3 indexed citations

Osuka, Yosuke, Narumi Kojima, Katsuyoshi Mizukami, et al.. (2024). Associations of polypharmacy with frailty severity and each frailty phenotype in community‐dwelling older adults: Itabashi Longitudinal Study on Aging. Geriatrics and gerontology international. 24(S1). 196–201. 4 indexed citations

Makizako, Hyuma, Hirohiko Hirano, Katsuya Iijima, et al.. (2024). Associations between information and communication technology use and frailty in community-dwelling old-old adults: results from the ILSA-J. European Geriatric Medicine. 15(3). 621–627. 5 indexed citations

10.

Sasai, Hiroyuki, Takashi Shida, Yosuke Osuka, et al.. (2023). Association between dynapenia and cognitive decline in community‐dwelling older Japanese adults: The IRIDE Cohort Study. Geriatrics and gerontology international. 24(S1). 123–129. 4 indexed citations

11.

Osuka, Yosuke, Narumi Kojima, Keiko Motokawa, et al.. (2023). Relationship between phase angle and lower-extremity function in older adults: Itabashi Longitudinal Study on Aging. Nutrition. 119. 112289–112289. 13 indexed citations

12.

Osuka, Yosuke, et al.. (2023). Predictive Capability of 5 Sarcopenia Diagnostic Criteria for Fall Incidents in Older Japanese Women: The Otassha Study. Journal of the American Medical Directors Association. 24(10). 1549–1554. 4 indexed citations

13.

Kojima, Narumi, Miji Kim, Kyoko Saito, et al.. (2023). Effects of Daily Consumption of Soy Products on Basic/Instrumental Activities of Daily Living in Community-Dwelling Japanese Women Aged 75 Years and Older: A 4-Year Cohort Study. Women s Health Reports. 4(1). 232–240. 3 indexed citations

14.

Suzuki, Yume, Kyoko Saito, Masanari Umemura, et al.. (2023). Relationship between Cognitive Function and Sway of Body in Standing Posture: A Cross-Sectional Study. Geriatrics. 8(2). 29–29. 1 indexed citations

15.

Azuma, Kotaro, Yosuke Osuka, Narumi Kojima, et al.. (2022). Association of Vitamin K Insufficiency as Evaluated by Serum Undercarboxylated Osteocalcin With Frailty in Community-Dwelling Older Adults. SHILAP Revista de lepidopterología. 3. 865178–865178. 2 indexed citations

16.

Osuka, Yosuke, Narumi Kojima, Takuya Omura, et al.. (2022). Effects of a home-based Radio-Taiso exercise programme on health-related quality of life in older adults with frailty: protocol for an assessor-blind randomised controlled trial. BMJ Open. 12(9). e063201–e063201. 3 indexed citations

17.

Osuka, Yosuke, et al.. (2019). Exercise and/or Dietary Varieties and Incidence of Frailty in Community-Dwelling Older Women: A 2-Year Cohort Study. The journal of nutrition health & aging. 23(5). 425–430. 7 indexed citations

18.

Kim, Hunkyung, Chang Won Won, Miji Kim, et al.. (2019). The effects of exercise and milk-fat globule membrane (MFGM) on walking parameters in community-dwelling elderly Japanese women with declines in walking ability: A randomized placebo controlled trial. Archives of Gerontology and Geriatrics. 83. 106–113. 10 indexed citations

19.

Kim, Hunkyung, Hideyo Yoshida, Xiuying Hu, et al.. (2012). Association between urinary incontinence and pain in community-dwelling elderly women. Neurourology and Urodynamics. 1 indexed citations

20.

Kojima, Narumi, Kimitaka Nakazawa, & H. Yano. (1999). Effects of limb loading on the lower-limb electromyographic activity during orthotic locomotion in a paraplegic patient. Neuroscience Letters. 274(3). 211–213. 22 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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