Zachary Barrett‐O’Keefe

972 total citations
27 papers, 775 citations indexed

About

Zachary Barrett‐O’Keefe is a scholar working on Cardiology and Cardiovascular Medicine, Complementary and alternative medicine and Physiology. According to data from OpenAlex, Zachary Barrett‐O’Keefe has authored 27 papers receiving a total of 775 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Cardiology and Cardiovascular Medicine, 18 papers in Complementary and alternative medicine and 6 papers in Physiology. Recurrent topics in Zachary Barrett‐O’Keefe's work include Cardiovascular and exercise physiology (18 papers), Heart Rate Variability and Autonomic Control (14 papers) and Cardiovascular Function and Risk Factors (7 papers). Zachary Barrett‐O’Keefe is often cited by papers focused on Cardiovascular and exercise physiology (18 papers), Heart Rate Variability and Autonomic Control (14 papers) and Cardiovascular Function and Risk Factors (7 papers). Zachary Barrett‐O’Keefe collaborates with scholars based in United States, Norway and Italy. Zachary Barrett‐O’Keefe's co-authors include Russell S. Richardson, D. Walter Wray, Melissa A. Witman, Stephen J. Ives, Joel D. Trinity, Joshua F. Lee, John McDaniel, Anette S. Fjeldstad, Ashley D. Nelson and Ryan S. Garten and has published in prestigious journals such as The FASEB Journal, Journal of Applied Physiology and Hypertension.

In The Last Decade

Zachary Barrett‐O’Keefe

26 papers receiving 758 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Zachary Barrett‐O’Keefe United States	20	546	365	170	97	67	27	775
Anne R. Crecelius United States	18	593 1.1×	474 1.3×	317 1.9×	61 0.6×	54 0.8×	46	871
Abhimanyu Uberoi United States	14	652 1.2×	318 0.9×	179 1.1×	117 1.2×	110 1.6×	23	906
Pia Thaning Denmark	15	464 0.8×	425 1.2×	211 1.2×	64 0.7×	63 0.9×	22	746
Nicola Hopkins United Kingdom	7	748 1.4×	378 1.0×	201 1.2×	125 1.3×	32 0.5×	9	945
K. Sue Hageman United States	17	557 1.0×	592 1.6×	289 1.7×	76 0.8×	115 1.7×	44	933
Jeffrey L. Jasperse United States	10	350 0.6×	297 0.8×	235 1.4×	73 0.8×	33 0.5×	16	547
Sean Runnels United States	9	314 0.6×	239 0.7×	104 0.6×	83 0.9×	41 0.6×	15	463
Tahisha M. Buck United States	10	404 0.7×	256 0.7×	150 0.9×	76 0.8×	83 1.2×	14	575
Takumi Tanabe Japan	14	750 1.4×	386 1.1×	382 2.2×	121 1.2×	60 0.9×	30	1.1k
Dennis G. Larson United States	16	442 0.8×	344 0.9×	299 1.8×	53 0.5×	54 0.8×	28	695

Countries citing papers authored by Zachary Barrett‐O’Keefe

Since Specialization

Citations

This map shows the geographic impact of Zachary Barrett‐O’Keefe'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 Zachary Barrett‐O’Keefe with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Zachary Barrett‐O’Keefe more than expected).

Fields of papers citing papers by Zachary Barrett‐O’Keefe

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Zachary Barrett‐O’Keefe. 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 Zachary Barrett‐O’Keefe. The network helps show where Zachary Barrett‐O’Keefe may publish in the future.

Co-authorship network of co-authors of Zachary Barrett‐O’Keefe

This figure shows the co-authorship network connecting the top 25 collaborators of Zachary Barrett‐O’Keefe. A scholar is included among the top collaborators of Zachary Barrett‐O’Keefe 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 Zachary Barrett‐O’Keefe. Zachary Barrett‐O’Keefe 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

Lee, Joshua F., Ryan S. Garten, Zachary Barrett‐O’Keefe, et al.. (2025). Acute sympathetic activation blunts the hyperemic and vasodilatory response to passive leg movement in young healthy males. Physiological Reports. 13(5). e70180–e70180. 1 indexed citations

Tweet, Marysia S., Patricia A. Pellikka, Rajiv Gulati, et al.. (2024). Coronary Artery Tortuosity and Spontaneous Coronary Artery Dissection: Association With Echocardiography and Global Longitudinal Strain, Fibromuscular Dysplasia, and Outcomes. Journal of the American Society of Echocardiography. 37(5). 518–529. 1 indexed citations

Chandrasekaran, Krishnaswamy, Georgios Christopoulos, & Zachary Barrett‐O’Keefe. (2020). The significance of “contractile reserve” in the echocardiographic assessment of athletic heart syndrome. Journal of Cardiovascular Echography. 30(1). 33–33.

Barrett‐O’Keefe, Zachary, Joshua F. Lee, Melissa A. Witman, et al.. (2018). Metaboreceptor activation in heart failure with reduced ejection fraction: Linking cardiac and peripheral vascular haemodynamics. Experimental Physiology. 103(6). 807–818. 11 indexed citations

Lee, Joshua F., Zachary Barrett‐O’Keefe, Ashley D. Nelson, et al.. (2016). Impaired skeletal muscle vasodilation during exercise in heart failure with preserved ejection fraction. International Journal of Cardiology. 211. 14–21. 52 indexed citations

Trinity, Joel D., D. Walter Wray, Melissa A. Witman, et al.. (2016). Ascorbic acid improves brachial artery vasodilation during progressive handgrip exercise in the elderly through a nitric oxide-mediated mechanism. American Journal of Physiology-Heart and Circulatory Physiology. 310(6). H765–H774. 23 indexed citations

Lee, Joshua F., Zachary Barrett‐O’Keefe, Ryan S. Garten, et al.. (2015). Evidence of microvascular dysfunction in heart failure with preserved ejection fraction. Heart. 102(4). 278–284. 89 indexed citations

Trinity, Joel D., Zachary Barrett‐O’Keefe, Stephen J. Ives, et al.. (2015). Endogenous endothelin-1 and femoral artery shear rate. Journal of Hypertension. 34(2). 266–273. 7 indexed citations

Rossman, Matthew J., Joel D. Trinity, Ryan S. Garten, et al.. (2015). Oral antioxidants improve leg blood flow during exercise in patients with chronic obstructive pulmonary disease. American Journal of Physiology-Heart and Circulatory Physiology. 309(5). H977–H985. 21 indexed citations

10.

Barrett‐O’Keefe, Zachary, Stephen J. Ives, Joel D. Trinity, et al.. (2014). Endothelin-A -Mediated Vasoconstriction During Exercise With Advancing Age. The Journals of Gerontology Series A. 70(5). 554–565. 37 indexed citations

11.

Frech, Tracy, Ashley E. Walker, Zachary Barrett‐O’Keefe, et al.. (2014). Systemic sclerosis induces pronounced peripheral vascular dysfunction characterized by blunted peripheral vasoreactivity and endothelial dysfunction. Clinical Rheumatology. 34(5). 905–913. 34 indexed citations

12.

Wray, D. Walter, Steven K. Nishiyama, Ryan A. Harris, et al.. (2012). Acute Reversal of Endothelial Dysfunction in the Elderly After Antioxidant Consumption. Hypertension. 59(4). 818–824. 97 indexed citations

13.

Barrett‐O’Keefe, Zachary, Jan Helgerud, Peter D. Wagner, & Russell S. Richardson. (2012). Maximal strength training and increased work efficiency: contribution from the trained muscle bed. Journal of Applied Physiology. 113(12). 1846–1851. 42 indexed citations

14.

Barrett‐O’Keefe, Zachary, Rachelle E. Kaplon, & John R. Halliwill. (2012). Sustained postexercise vasodilatation and histamine receptor activation following small muscle‐mass exercise in humans. Experimental Physiology. 98(1). 268–277. 40 indexed citations

15.

Barrett‐O’Keefe, Zachary, Melissa A. Witman, John McDaniel, et al.. (2012). Angiotensin II potentiates α-adrenergic vasoconstriction in the elderly. Clinical Science. 124(6). 413–422. 27 indexed citations

16.

Trinity, Joel D., John McDaniel, Massimo Venturelli, et al.. (2011). Impact of body position on central and peripheral hemodynamic contributions to movement-induced hyperemia: implications for rehabilitative medicine. American Journal of Physiology-Heart and Circulatory Physiology. 300(5). H1885–H1891. 35 indexed citations

17.

Emhoff, Chi‐An W., et al.. (2011). Histamine-receptor blockade reduces blood flow but not muscle glucose uptake during postexercise recovery in humans. Experimental Physiology. 96(7). 664–673. 19 indexed citations

18.

Simmons, Grant H., Zachary Barrett‐O’Keefe, Christopher T. Minson, & John R. Halliwill. (2011). Cutaneous vascular and core temperature responses to sustained cold exposure in hypoxia. Experimental Physiology. 96(10). 1062–1071. 21 indexed citations

19.

Barrett‐O’Keefe, Zachary, Jan Helgerud, Peter D. Wagner, & Russell S. Richardson. (2010). Maximal Strength Training: The Effects on Intramuscular Economy and its Determinants. Medicine & Science in Sports & Exercise. 42(5). 241–241. 1 indexed citations

20.

Trinity, Joel D., Markus Amann, John McDaniel, et al.. (2010). Limb movement-induced hyperemia has a central hemodynamic component: evidence from a neural blockade study. American Journal of Physiology-Heart and Circulatory Physiology. 299(5). H1693–H1700. 50 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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