Junko Iwamoto

1.8k total citations
28 papers, 1.4k citations indexed

About

Junko Iwamoto is a scholar working on Endocrine and Autonomic Systems, Physiology and Health, Toxicology and Mutagenesis. According to data from OpenAlex, Junko Iwamoto has authored 28 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Endocrine and Autonomic Systems, 8 papers in Physiology and 7 papers in Health, Toxicology and Mutagenesis. Recurrent topics in Junko Iwamoto's work include Circadian rhythm and melatonin (12 papers), Sleep and related disorders (6 papers) and Impact of Light on Environment and Health (4 papers). Junko Iwamoto is often cited by papers focused on Circadian rhythm and melatonin (12 papers), Sleep and related disorders (6 papers) and Impact of Light on Environment and Health (4 papers). Junko Iwamoto collaborates with scholars based in Japan and Israel. Junko Iwamoto's co-authors include Keigo Saeki, Nozomi Okamoto, Kimiko Tomioka, Norio Kurumatani, Kenji Obayashi, Yoshito Ikada, Satoko Nezu, Masayuki Morikawa, Noboru Habu and Nobuko Amano and has published in prestigious journals such as The Journal of Clinical Endocrinology & Metabolism, Brain Research and Journal of the American Geriatrics Society.

In The Last Decade

Junko Iwamoto

27 papers receiving 1.4k citations

Peers

Junko Iwamoto

PHYSI

EAS

HTM

GPC

ECP

Nozomi Okamoto Japan

Kenji Obayashi Japan

Ragnar Asplund Sweden

Yu‐Kai Lin Taiwan

Mirja Quante Germany

Tomoko Wakamura Japan

Carla R. Schubert United States

Grace E. Vincent Australia

Robert Fell United States

Pedro Felipe Carvalhedo de Bruin Brazil

Nozomi Okamoto Japan

Junko Iwamoto

539 ×1.2

PHYSI

251 ×0.6

EAS

216 ×0.8

HTM

118 ×0.6

GPC

141 ×0.8

ECP

Citations per year, relative to Junko Iwamoto Junko Iwamoto (= 1×) peers Nozomi Okamoto

Countries citing papers authored by Junko Iwamoto

Since Specialization

Citations

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

Fields of papers citing papers by Junko Iwamoto

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Junko Iwamoto

This figure shows the co-authorship network connecting the top 25 collaborators of Junko Iwamoto. A scholar is included among the top collaborators of Junko Iwamoto 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 Junko Iwamoto. Junko Iwamoto 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

Iwamoto, Junko, Keigo Saeki, Yuki Yamagami, et al.. (2019). Lower Incidence of In-Hospital Falls in Patients Hospitalized in Window Beds Than Nonwindow Beds. Journal of the American Medical Directors Association. 21(4). 476–480. 7 indexed citations

Obayashi, Kenji, et al.. (2016). Melatonin Secretion and Muscle Strength in Elderly Individuals: A Cross-Sectional Study of the HEIJO-KYO Cohort. The Journals of Gerontology Series A. 71(9). 1235–1240. 22 indexed citations

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, et al.. (2015). Physiological Levels of Melatonin Relate to Cognitive Function and Depressive Symptoms: The HEIJO-KYO Cohort. The Journal of Clinical Endocrinology & Metabolism. 100(8). 3090–3096. 37 indexed citations

Tomioka, Kimiko, Masayuki Morikawa, Junko Iwamoto, et al.. (2014). Walking speed is associated with self‐perceived hearing handicap in high‐functioning older adults: The Fujiwara‐kyo study. Geriatrics and gerontology international. 15(6). 745–754. 11 indexed citations

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, Yoshito Ikada, & Norio Kurumatani. (2014). Association between light exposure at night and nighttime blood pressure in the elderly independent of nocturnal urinary melatonin excretion. Chronobiology International. 31(6). 779–786. 70 indexed citations

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, et al.. (2014). Lower Melatonin Secretion in Older Females: Gender Differences Independent of Light Exposure Profiles. Journal of Epidemiology. 25(1). 38–43. 23 indexed citations

Saeki, Keigo, Kenji Obayashi, Junko Iwamoto, et al.. (2014). Stronger association of indoor temperature than outdoor temperature with blood pressure in colder months. Journal of Hypertension. 32(8). 1582–1589. 92 indexed citations

Nezu, Satoko, Nozomi Okamoto, Masayuki Morikawa, et al.. (2014). Health-related Quality of Life (HRQOL) Decreases Independently of Chronic Conditions and Geriatric Syndromes in Older Adults With Diabetes: The Fujiwara-kyo Study. Journal of Epidemiology. 24(4). 259–266. 29 indexed citations

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, Yoshito Ikada, & Norio Kurumatani. (2013). Exposure to light at night and risk of depression in the elderly. Journal of Affective Disorders. 151(1). 331–336. 85 indexed citations

10.

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, Yoshito Ikada, & Norio Kurumatani. (2013). Independent associations of exposure to evening light and nocturnal urinary melatonin excretion with diabetes in the elderly. Chronobiology International. 31(3). 394–400. 39 indexed citations

11.

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, et al.. (2013). Nocturnal urinary melatonin excretion is associated with non-dipper pattern in elderly hypertensives. Hypertension Research. 36(8). 736–740. 26 indexed citations

12.

Morikawa, Masayuki, Nozomi Okamoto, Kuniaki Kiuchi, et al.. (2013). Association between depressive symptoms and metabolic syndrome in Japanese community‐dwelling older people: a cross‐sectional analysis from the baseline results of the Fujiwara‐kyo prospective cohort study. International Journal of Geriatric Psychiatry. 28(12). 1251–1259. 34 indexed citations

13.

Tomioka, Kimiko, Hiroki Ikeda, Masayuki Morikawa, et al.. (2012). The Hearing Handicap Inventory for Elderly-Screening (HHIE-S) versus a single question: reliability, validity, and relations with quality of life measures in the elderly community, Japan. Quality of Life Research. 22(5). 1151–1159. 62 indexed citations

14.

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, et al.. (2012). Positive Effect of Daylight Exposure on Nocturnal Urinary Melatonin Excretion in the Elderly: A Cross-Sectional Analysis of the HEIJO-KYO Study. The Journal of Clinical Endocrinology & Metabolism. 97(11). 4166–4173. 99 indexed citations

15.

Obayashi, Kenji, Keigo Saeki, Junko Iwamoto, et al.. (2012). Exposure to Light at Night, Nocturnal Urinary Melatonin Excretion, and Obesity/Dyslipidemia in the Elderly: A Cross-Sectional Analysis of the HEIJO-KYO Study. The Journal of Clinical Endocrinology & Metabolism. 98(1). 337–344. 147 indexed citations

16.

Tomioka, Kimiko, Junko Iwamoto, Keigo Saeki, & Nozomi Okamoto. (2011). Reliability and Validity of the International Physical Activity Questionnaire (IPAQ) in Elderly Adults: The Fujiwara-kyo Study. Journal of Epidemiology. 21(6). 459–465. 282 indexed citations

17.

Okamoto, Nozomi, Masayuki Morikawa, Noboru Habu, et al.. (2010). Tooth loss is associated with mild memory impairment in the elderly: The Fujiwara-kyo study. Brain Research. 1349. 68–75. 56 indexed citations

18.

Okamoto, Nozomi, Masayuki Morikawa, Noboru Habu, et al.. (2010). Relationship of tooth loss to mild memory impairment and cognitive impairment: findings from the fujiwara-kyo study. Behavioral and Brain Functions. 6(1). 77–77. 92 indexed citations

19.

Iwamoto, Junko, et al.. (1966). Loss of Cesium-137 and Potassium by Dry Ashing and Hydrochloric Acid Treatment of Total Diet Samples. RADIOISOTOPES. 15(3). 103–108. 2 indexed citations

20.

Fujita, Minoru & Junko Iwamoto. (1961). Estimation of Body Burden on Excretion Analysis. RADIOISOTOPES. 10(3). 310–321. 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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