Masaki Machida

1.7k total citations · 1 hit paper
60 papers, 1.0k citations indexed

About

Masaki Machida is a scholar working on Health, Public Health, Environmental and Occupational Health and Physiology. According to data from OpenAlex, Masaki Machida has authored 60 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Health, 16 papers in Public Health, Environmental and Occupational Health and 13 papers in Physiology. Recurrent topics in Masaki Machida's work include Physical Activity and Health (12 papers), Vaccine Coverage and Hesitancy (11 papers) and COVID-19 and Mental Health (9 papers). Masaki Machida is often cited by papers focused on Physical Activity and Health (12 papers), Vaccine Coverage and Hesitancy (11 papers) and COVID-19 and Mental Health (9 papers). Masaki Machida collaborates with scholars based in Japan, Australia and United Kingdom. Masaki Machida's co-authors include Shigeru Inoue, Hiroyuki Kikuchi, Yuko Odagiri, Noritoshi Fukushima, Shiho Amagasa, Tomoko Takamiya, Itaru Nakamura, Hidehiro Watanabe, Takako Kojima and Reiko Saito and has published in prestigious journals such as Clinical Infectious Diseases, Sports Medicine and The Journals of Gerontology Series A.

In The Last Decade

Masaki Machida

55 papers receiving 1.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Acceptance of a COVID-19 Vaccine in Japan during the COVID-19 Pandemic

2021 208 citations Masaki Machida, Itaru Nakamura et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Masaki Machida Japan	15	354	242	238	194	167	60	1.0k
Elita Anna Sabella Italy	9	248 0.7×	133 0.5×	371 1.6×	175 0.9×	117 0.7×	11	772
Divjyot Kaur India	12	210 0.6×	72 0.3×	217 0.9×	111 0.6×	75 0.4×	26	1.1k
Quanman Li China	15	160 0.5×	86 0.4×	166 0.7×	127 0.7×	75 0.4×	34	768
Henrike Galenkamp Netherlands	16	396 1.1×	104 0.4×	141 0.6×	56 0.3×	33 0.2×	92	1.1k
Eman A. Sultan Egypt	12	140 0.4×	37 0.2×	429 1.8×	112 0.6×	220 1.3×	41	870
Upendra Baitha India	14	107 0.3×	32 0.1×	275 1.2×	144 0.7×	78 0.5×	63	831
Myo Nyein Aung Japan	15	130 0.4×	71 0.3×	137 0.6×	108 0.6×	27 0.2×	86	744
Saeed Bashirian Iran	17	74 0.2×	89 0.4×	296 1.2×	33 0.2×	57 0.3×	90	1.1k
Chun Bong Chow Hong Kong	19	96 0.3×	81 0.3×	311 1.3×	113 0.6×	36 0.2×	52	1.1k
Nitasa Sahu United States	7	172 0.5×	27 0.1×	247 1.0×	229 1.2×	59 0.4×	19	786

Countries citing papers authored by Masaki Machida

Since Specialization

Citations

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

Fields of papers citing papers by Masaki Machida

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masaki Machida

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Machida, Masaki & Wakaba Fukushima. (2025). Vaccine Policy Pendulum: A Lesson From Japan. Clinical Infectious Diseases.

Machida, Masaki, et al.. (2025). Nationwide survey of municipal policies and COVID-19 vaccination uptake among older adults in Japan during 2024–2025. Human Vaccines & Immunotherapeutics. 21(1). 2584760–2584760. 1 indexed citations

Machida, Masaki, Shigeru Inoue, Yuki Furuse, et al.. (2025). Exploring the knowledge and attitude toward respiratory syncytial virus vaccine and associated factors among pregnant women in Japan during the early post-marketing phase. Vaccine. 61. 127434–127434. 2 indexed citations

Murayama, Hiroshi, Ai Iizuka, Masaki Machida, et al.. (2024). Impact of social isolation on change in brain volume in community-dwelling older Japanese people: The NEIGE Study. Archives of Gerontology and Geriatrics. 129. 105642–105642. 3 indexed citations

Machida, Masaki, Shinji Fukushima, Takahiro Tabuchi, et al.. (2024). Regional Disparities in Measles Vaccination Coverage and Their Associated Factors: An Ecological Study in Japan. Journal of Epidemiology. 35(2). 100–105. 1 indexed citations

Odagiri, Yuko, Masaki Machida, Tomoko Takamiya, et al.. (2024). Association between the Decrease in Medical Visit Frequency and Chronic Disease Worsening in the Early Stages of COVID-19 - A Longitudinal Study -. Internal Medicine. 63(12). 1689–1696. 1 indexed citations

Machida, Masaki, Hiroyuki Kikuchi, Yuko Odagiri, et al.. (2023). Commute mode — physical activity and the possibility of change to active commuting among Japanese workers: a descriptive study by region. SANGYO EISEIGAKU ZASSHI. 66(2). 90–97.

Machida, Masaki, Shigeru Inoue, & Takahiro Tabuchi. (2023). General Vaccination Readiness in Japan: Results from the JASTIS 2023 Study. Japanese Journal of Infectious Diseases. 77(1). 34–39. 3 indexed citations

Fukushima, Noritoshi, Hiroyuki Kikuchi, Hiroki Sato, et al.. (2023). Dose-Response Relationship of Physical Activity with All-Cause Mortality among Older Adults: An Umbrella Review. Journal of the American Medical Directors Association. 25(3). 417–430. 13 indexed citations

10.

Machida, Masaki, Hiroyuki Kikuchi, Takako Kojima, et al.. (2022). Individual-level social capital and COVID-19 vaccine hesitancy in Japan: a cross-sectional study. Human Vaccines & Immunotherapeutics. 18(5). 2086773–2086773. 15 indexed citations

11.

Kikuchi, Hiroyuki, Masaki Machida, Itaru Nakamura, et al.. (2022). Persistence of Mental Health Deterioration Among People Living Alone During the COVID-19 Pandemic: A Periodically-repeated Longitudinal Study. Journal of Epidemiology. 32(7). 345–353. 8 indexed citations

12.

Tani, Yukako, Takeo Fujiwara, Genichi Sugihara, et al.. (2022). Neighborhood Beauty and the Brain in Older Japanese Adults. International Journal of Environmental Research and Public Health. 20(1). 679–679. 5 indexed citations

13.

Machida, Masaki, Takako Kojima, H. Akiko Popiel, et al.. (2022). Development, validity, and reliability of the Japanese version of the 7C of vaccination readiness scale. American Journal of Infection Control. 51(4). 426–433. 11 indexed citations

14.

Machida, Masaki, Itaru Nakamura, Reiko Saito, et al.. (2021). Survey on usage and concerns of a COVID-19 contact tracing application in Japan. Public Health in Practice. 2. 100125–100125. 9 indexed citations

15.

Machida, Masaki, Tomoko Takamiya, Shiho Amagasa, et al.. (2021). Objectively Measured Intensity-specific Physical Activity and Hippocampal Volume Among Community-dwelling Older Adults. Journal of Epidemiology. 32(11). 489–495. 16 indexed citations

16.

Fukushima, Noritoshi, Hiroyuki Kikuchi, Shiho Amagasa, et al.. (2021). Exposure to prolonged sedentary behavior on weekdays rather than weekends in white-collar workers in comparison with blue-collar workers. Journal of Occupational Health. 63(1). e12246–e12246. 8 indexed citations

17.

Fukushima, Noritoshi, Masaki Machida, Hiroyuki Kikuchi, et al.. (2021). Associations of working from home with occupational physical activity and sedentary behavior under the COVID-19 pandemic. Journal of Occupational Health. 63(1). e12212–e12212. 100 indexed citations

18.

Machida, Masaki, Itaru Nakamura, Takako Kojima, et al.. (2021). Trends in COVID-19 vaccination intent from pre- to post-COVID-19 vaccine distribution and their associations with the 5C psychological antecedents of vaccination by sex and age in Japan. Human Vaccines & Immunotherapeutics. 17(11). 3954–3962. 32 indexed citations

19.

Machida, Masaki, Itaru Nakamura, Reiko Saito, et al.. (2020). Adoption of personal protective measures by ordinary citizens during the COVID-19 outbreak in Japan. International Journal of Infectious Diseases. 94. 139–144. 81 indexed citations

20.

Amagasa, Shiho, Shigeru Inoue, Hiroshi Murayama, et al.. (2019). Associations of Sedentary and Physically-Active Behaviors With Cognitive-Function Decline in Community-Dwelling Older Adults: Compositional Data Analysis From the NEIGE Study. Journal of Epidemiology. 30(11). 503–508. 28 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.

Explore authors with similar magnitude of impact