Nancy Ryan

5.9k total citations · 2 hit papers
40 papers, 4.3k citations indexed

About

Nancy Ryan is a scholar working on Endocrinology, Diabetes and Metabolism, Physiology and Surgery. According to data from OpenAlex, Nancy Ryan has authored 40 papers receiving a total of 4.3k indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Endocrinology, Diabetes and Metabolism, 8 papers in Physiology and 7 papers in Surgery. Recurrent topics in Nancy Ryan's work include Pituitary Gland Disorders and Treatments (24 papers), Growth Hormone and Insulin-like Growth Factors (12 papers) and Adrenal and Paraganglionic Tumors (6 papers). Nancy Ryan is often cited by papers focused on Pituitary Gland Disorders and Treatments (24 papers), Growth Hormone and Insulin-like Growth Factors (12 papers) and Adrenal and Paraganglionic Tumors (6 papers). Nancy Ryan collaborates with scholars based in Canada, United States and Hungary. Nancy Ryan's co-authors include William J. Evans, Lewis A. Lipsitz, Karen M. Clements, Miriam E. Nelson, Joseph J. Kehayias, M. A. Fiatarone, G. Solares, Susan B. Roberts, Kálmán Kovács and Éva Horváth and has published in prestigious journals such as New England Journal of Medicine, The Journal of Clinical Endocrinology & Metabolism and JNCI Journal of the National Cancer Institute.

In The Last Decade

Nancy Ryan

39 papers receiving 4.0k 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.

Exercise Training and Nutritional Supplementation for Physical Frailty in Very Elderly People

1994 2.1k citations M. A. Fiatarone, Nancy Ryan et al. New England Journal of Medicine profile →
High-intensity strength training in nonagenarians. Effects on skeletal muscle.

1990 506 citations Nancy Ryan, Lewis A. Lipsitz et al. PubMed profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Nancy Ryan Canada	20	1.9k	1.1k	540	538	498	40	4.3k
T. B. Harris United States	27	4.0k 2.1×	423 0.4×	576 1.1×	957 1.8×	383 0.8×	40	6.7k
W. J. Evans United States	17	2.3k 1.2×	177 0.2×	313 0.6×	381 0.7×	354 0.7×	29	4.1k
M. Nevitt United States	12	2.9k 1.5×	189 0.2×	716 1.3×	730 1.4×	264 0.5×	21	5.1k
Michael Nevitt United States	15	1.7k 0.9×	211 0.2×	375 0.7×	356 0.7×	131 0.3×	20	3.1k
Susan K. Ewing United States	32	1.3k 0.7×	542 0.5×	891 1.6×	844 1.6×	272 0.5×	61	4.6k
T. B. Harris United States	15	2.4k 1.3×	116 0.1×	401 0.7×	616 1.1×	251 0.5×	17	3.8k
Matthew J. Delmonico United States	25	2.6k 1.3×	115 0.1×	326 0.6×	581 1.1×	239 0.5×	63	3.8k
Chiara Cavazzini United States	11	1.4k 0.8×	147 0.1×	242 0.4×	621 1.2×	189 0.4×	12	2.5k
B. Penninx United States	12	1.6k 0.9×	128 0.1×	300 0.6×	620 1.2×	577 1.2×	16	3.2k
Li‐Yung Lui United States	40	810 0.4×	503 0.4×	821 1.5×	354 0.7×	152 0.3×	88	5.0k

Countries citing papers authored by Nancy Ryan

Since Specialization

Citations

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

Fields of papers citing papers by Nancy Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nancy Ryan

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

Maleki-Yazdi, M. Reza, et al.. (2007). Early Detection and Impaired Quality of Life in COPD GOLD Stage 0: A Pilot Study. COPD Journal of Chronic Obstructive Pulmonary Disease. 4(4). 313–320. 29 indexed citations

Bernstein, Melissa, Katherine L. Tucker, Nancy Ryan, et al.. (2002). Higher dietary variety is associated with better nutritional status in frail elderly people. Journal of the American Dietetic Association. 102(8). 1096–1104. 200 indexed citations

Ungar, Wendy J., Robert G. Josse, Nancy Ryan, et al.. (2000). The Canadian Score™ Questionnaire. Journal of Clinical Densitometry. 3(3). 269–280. 24 indexed citations

Krondl, Magdalena, et al.. (1999). Subjectively Healthy Elderly Consuming a Liquid Nutrition Supplement Maintained Body Mass Index and Improved Some Nutritional Parameters and Perceived Well-Being. Journal of the American Dietetic Association. 99(12). 1542–1548. 32 indexed citations

Singh, Maria A. Fiatarone, Wenjing Ding, Thomas Manfredi, et al.. (1999). Insulin-like growth factor I in skeletal muscle after weight-lifting exercise in frail elders. American Journal of Physiology-Endocrinology and Metabolism. 277(1). E135–E143. 214 indexed citations

Fiatarone, M. A., Nancy Ryan, Karen M. Clements, et al.. (1994). Exercise Training and Nutritional Supplementation for Physical Frailty in Very Elderly People. New England Journal of Medicine. 330(25). 1769–1775. 2135 indexed citations breakdown →

Ryan, Nancy, et al.. (1990). High-intensity strength training in nonagenarians. Effects on skeletal muscle.. PubMed. 263(22). 3029–34. 506 indexed citations breakdown →

Scheithauer, B. W., et al.. (1989). Effects of Estrogen on the Human Pituitary: A Clinicopathologic Study. Mayo Clinic Proceedings. 64(9). 1077–1084. 50 indexed citations

Scheithauer, Bernd W., et al.. (1988). Anorexia Nervosa: An Immunohistochemical Study of the Pituitary Gland. Mayo Clinic Proceedings. 63(1). 23–28. 4 indexed citations

10.

Kovacs, Kalman, Nancy Ryan, & Lucia Ştefăneanu. (1987). Identification of Corticotrophs in the Human Pituitary with mAB 1u-5, a Novel Immunocytochemical Marker. Pathology - Research and Practice. 182(6). 775–779. 4 indexed citations

11.

McComb, Donna J., Nancy Ryan, Éva Horváth, & Kálmán Kovács. (1983). Subclinical adenomas of the human pituitary. New light on old problems.. PubMed. 107(9). 488–91. 85 indexed citations

12.

McComb, Donna J., et al.. (1981). Enhanced Responsiveness of Lactotrophs in Ectopic Pituitaries to Bromocryptine and Estrone Acetate. Cells Tissues Organs. 110(2). 113–120. 5 indexed citations

13.

McComb, Donna J., Nancy Ryan, Éva Horváth, et al.. (1981). Five Different Adenomas Derived From the Rat Adenohypophysis: Immunocytochemical and Ultrastructural Study2, 3. JNCI Journal of the National Cancer Institute. 66(6). 1103–1111. 13 indexed citations

14.

Kovács, Kálmán, Nancy Ryan, Éva Horváth, William Singer, & C. Ezrin. (1980). Pituitary Adenomas in Old Age. Obstetrical & Gynecological Survey. 35(10). 721–723. 1 indexed citations

15.

Ryan, Nancy, et al.. (1980). Calcium deposition in human pituitary adenomas studied by histology, electron microscopy, electron diffraction and X-ray spectrometry. Experimentelle Pathologie. 18(7-8). 377–386. 15 indexed citations

16.

Kovács, Kálmán, Éva Horváth, Nancy Ryan, & C. Ezrin. (1980). Null cell adenoma of the human pituitary. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 387(2). 165–174. 114 indexed citations

17.

Kovács, Kálmán, et al.. (1979). Autolytic changes in the rat adenohypophysis. Experimentelle Pathologie. 17(4). 185–195. 7 indexed citations

18.

Ryan, Nancy, Kálmán Kovács, & C. Ezrin. (1979). Thyrotrophs in old age. An immunocytologic study of human pituitary glands.. PubMed. 73(2). 191–8. 5 indexed citations

19.

Ryan, Nancy, et al.. (1978). Human Pituitary Growth Hormone Cells in Old Age. Gerontology. 24(6). 441–447. 7 indexed citations

20.

Ryan, Nancy, Kálmán Kovács, & C. Ezrin. (1977). Staining of human pituitary glands with lead hematoxylin in comparison with other histochemical procedures, including the immunoenzyme technique. Acta Histochemica. 59(1). 96–105. 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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