Ryohei Nagaoka

458 total citations
28 papers, 313 citations indexed

About

Ryohei Nagaoka is a scholar working on Physiology, Cardiology and Cardiovascular Medicine and Geriatrics and Gerontology. According to data from OpenAlex, Ryohei Nagaoka has authored 28 papers receiving a total of 313 indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Physiology, 12 papers in Cardiology and Cardiovascular Medicine and 8 papers in Geriatrics and Gerontology. Recurrent topics in Ryohei Nagaoka's work include Nutrition and Health in Aging (19 papers), Heart Failure Treatment and Management (9 papers) and Frailty in Older Adults (8 papers). Ryohei Nagaoka is often cited by papers focused on Nutrition and Health in Aging (19 papers), Heart Failure Treatment and Management (9 papers) and Frailty in Older Adults (8 papers). Ryohei Nagaoka collaborates with scholars based in Japan and United States. Ryohei Nagaoka's co-authors include Katsuhiko Ohori, Satoshi Katano, Hidemichi Kouzu, Toshiyuki Yano, Tomoyuki Ishigo, Ryo Nishikawa, Nobutaka Nagano, Akiyoshi Hashimoto, Takefumi Fujito and Masayuki Koyama and has published in prestigious journals such as European Heart Journal, Science Signaling and Cardiovascular Diabetology.

In The Last Decade

Ryohei Nagaoka

27 papers receiving 302 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryohei Nagaoka Japan	11	172	131	65	56	28	28	313
Satoshi Katano Japan	11	202 1.2×	152 1.2×	84 1.3×	53 0.9×	32 1.1×	34	352
Guilherme Wesley Peixoto da Fonseca Brazil	12	203 1.2×	105 0.8×	45 0.7×	76 1.4×	20 0.7×	42	428
Elena Massimino Italy	6	258 1.5×	17 0.1×	55 0.8×	67 1.2×	29 1.0×	11	343
Lidia Cobos-Palacios Spain	9	70 0.4×	41 0.3×	24 0.4×	28 0.5×	41 1.5×	20	225
Peter Holzhauer Germany	5	87 0.5×	58 0.4×	12 0.2×	38 0.7×	16 0.6×	28	268
Chin-Sung Chang Taiwan	10	131 0.8×	27 0.2×	25 0.4×	95 1.7×	67 2.4×	13	361
Carla Sousa Portugal	10	48 0.3×	169 1.3×	14 0.2×	37 0.7×	49 1.8×	53	312
Apostolos Sovatzidis Greece	9	153 0.9×	16 0.1×	28 0.4×	116 2.1×	46 1.6×	12	387
Kristy Du United States	7	278 1.6×	15 0.1×	64 1.0×	66 1.2×	40 1.4×	9	352
Jeong Hyun Kim South Korea	10	189 1.1×	40 0.3×	9 0.1×	98 1.8×	13 0.5×	16	338

Countries citing papers authored by Ryohei Nagaoka

Since Specialization

Citations

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

Fields of papers citing papers by Ryohei Nagaoka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryohei Nagaoka

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

Katano, Satoshi, Toshiyuki Yano, Ryohei Nagaoka, et al.. (2025). Determinant of functional independence in older patients with heart failure: physical function vs. muscle mass. Archives of Gerontology and Geriatrics. 137. 105933–105933.

Katano, Satoshi, Toshiyuki Yano, Ryohei Nagaoka, et al.. (2024). Associations Between In-Hospital Daily Protein Intake and Adverse Clinical Outcomes in Older Patients with Heart Failure. ESC Heart Failure. 11(5). 2591–2605. 2 indexed citations

Kouzu, Hidemichi, Toshiyuki Yano, Satoshi Katano, et al.. (2024). Adverse Plasma Branched-Chain Amino Acid Profile Mirrors Fatty Muscle Degeneration in Diabetic Heart Failure Patients. ESC Heart Failure. 11(5). 2941–2953. 3 indexed citations

Katano, Satoshi, Toshiyuki Yano, Ryohei Nagaoka, et al.. (2024). Prognostic implication of sarcopenia diagnosed by updated Asian Working Group for Sarcopenia criteria in older patients with heart failure: Utility and limitation. The journal of nutrition health & aging. 29(1). 100434–100434. 4 indexed citations

Katano, Satoshi, Toshiyuki Yano, Hidemichi Kouzu, et al.. (2023). Circulating level of β-aminoisobutyric acid (BAIBA), a novel myokine-like molecule, is inversely associated with fat mass in patients with heart failure. Heart and Vessels. 39(1). 35–47. 2 indexed citations

Nagaoka, Ryohei, Satoshi Katano, Toshiyuki Yano, et al.. (2023). Optimal serum 25-hydroxyvitamin D level to prevent sarcopenia in patients with heart failure: Insights from a dose-response relationship. Nutrition Metabolism and Cardiovascular Diseases. 34(3). 606–617. 4 indexed citations

Katano, Satoshi, Toshiyuki Yano, Ryohei Nagaoka, et al.. (2023). Impact of Radar Chart-Based Information Sharing in a Multidisciplinary Team on In-Hospital Outcomes and Prognosis in Older Patients With Heart Failure. Circulation Reports. 5(7). 271–281. 4 indexed citations

Ohori, Katsuhiko, Toshiyuki Yano, Satoshi Katano, et al.. (2023). Relationship Between Serum Iron Level and Physical Function in Heart Failure Patients is Lost by Presence of Diabetes. ESC Heart Failure. 11(1). 513–523. 2 indexed citations

Ohori, Katsuhiko, Toshiyuki Yano, Satoshi Katano, et al.. (2023). Independent Association Between Use of Proton Pump Inhibitors and Muscle Wasting in Patients with Heart Failure: A Single-Center, Ambispective, Observational Study. Drugs & Aging. 40(8). 731–739. 6 indexed citations

10.

Katano, Satoshi, Toshiyuki Yano, Ryohei Nagaoka, et al.. (2023). Independent Link Between Use of Mineralocorticoid Receptor Antagonists and Muscle Wasting in Heart Failure Patients Not Receiving Renin-Angiotensin System Inhibitors. Circulation Journal. 88(1). 10–19. 3 indexed citations

11.

Watanabe, Ayako, Satoshi Katano, Toshiyuki Yano, et al.. (2022). Loss of perceived social role, an index of social frailty, is an independent predictor of future adverse events in hospitalized patients with heart failure. Frontiers in Cardiovascular Medicine. 9. 1051570–1051570. 9 indexed citations

12.

Katano, Satoshi, Toshiyuki Yano, Hidemichi Kouzu, et al.. (2022). Elevated circulating level of β-aminoisobutyric acid (BAIBA) in heart failure patients with type 2 diabetes receiving sodium-glucose cotransporter 2 inhibitors. Cardiovascular Diabetology. 21(1). 285–285. 13 indexed citations

13.

Katano, Satoshi, Ryohei Nagaoka, Katsuhiko Ohori, et al.. (2022). Anthropometric Parameters-Derived Estimation of Muscle Mass Predicts All-Cause Mortality in Heart Failure Patients. ESC Heart Failure. 9(6). 4358–4365. 19 indexed citations

14.

Katano, Satoshi, Toshiyuki Yano, Hidemichi Kouzu, et al.. (2021). Energy intake during hospital stay predicts all-cause mortality after discharge independently of nutritional status in elderly heart failure patients. Clinical Research in Cardiology. 110(8). 1202–1220. 29 indexed citations

15.

Ohori, Katsuhiko, Toshiyuki Yano, Satoshi Katano, et al.. (2021). High percent body fat mass predicts lower risk of cardiac events in patients with heart failure: an explanation of the obesity paradox. BMC Geriatrics. 21(1). 16–16. 41 indexed citations

16.

Katano, Satoshi, Toshiyuki Yano, Masaki Shimizu, et al.. (2021). Does Renin-Angiotensin System Inhibition Have Impacts on Muscle Mass and Bone Mineral Density in Heart Failure Patients?. ESC Heart Failure. 8(4). 2617–2624. 10 indexed citations

17.

Kouzu, Hidemichi, Satoshi Katano, Toshiyuki Yano, et al.. (2021). Plasma Amino Acid Profiling Improves Predictive Accuracy of Adverse Events in Patients with Heart Failure. ESC Heart Failure. 8(6). 5045–5056. 24 indexed citations

18.

Katano, Satoshi, Toshiyuki Yano, Hidemichi Kouzu, et al.. (2020). Clinical Risk Factors and Prognostic Impact of Osteoporosis in Patients With Chronic Heart Failure. Circulation Journal. 84(12). 2224–2234. 17 indexed citations

19.

Ohori, Katsuhiko, Toshiyuki Yano, Satoshi Katano, et al.. (2020). Independent Link Between Peripheral Artery Disease and Muscle Wasting in Patients with Heart Failure. ESC Heart Failure. 7(5). 3252–3256. 9 indexed citations

20.

Qian, Nianchao, Atsuhiko Ichimura, Daisuke Takei, et al.. (2019). TRPM7 channels mediate spontaneous Ca ²⁺ fluctuations in growth plate chondrocytes that promote bone development. Science Signaling. 12(576). 25 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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