Fred Shaffer

9.9k citations

26 papers · 6.6k indexed · 3 hit papers · h-index 10

Impact in

Cardiology and Cardiovascular Medicine top 0.2%
- Heart Rate Variability and Autonomic Control
- ECG Monitoring and Analysis
Complementary and alternative medicine top 0.2%
- Cardiovascular and exercise physiology

Papers in ⓘ

Cardiology and Cardiovascular Medicine 15
- Heart Rate Variability and Autonomic Control 15
Biomedical Engineering 9
- Non-Invasive Vital Sign Monitoring 8

Co-authors: J. P. Ginsberg (1 shared paper)Rollin McCraty (3 shared papers)C Zerr (2 shared papers)Zachary M. Meehan (6 shared papers)Erik Peper (5 shared papers)Donald Moss (4 shared papers)Jayla Gray (1 shared paper)I‐Mei Lin (2 shared papers)
Journals: Frontiers in Neuroscience (2 papers)Frontiers in Public Health (1 paper)Frontiers in Psychology (1 paper)Global Advances in Health and Medicine (1 paper)Applied Psychophysiology and Biofeedback (5 papers)
Partner nations: United States Taiwan

In The Last Decade

Fred Shaffer

23 papers receiving 6.4k citations

Hit Papers

align trajectories log scale

An Overview of Heart Rate Variability Metrics and Norms 2017 · 4.2k citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2017 Frontiers in Public Health
2015 Global Advances in Health and Medicine
2014 Frontiers in Psychology

Peers

Countries citing papers authored by Fred Shaffer

Since Specialization

Citations

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

Fields of papers citing papers by Fred Shaffer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 10 scholars most cited alongside Fred Shaffer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Fred Shaffer Line = papers co-authored together Fred Shaffer links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 26 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	An Overview of Heart Rate Variability Metrics and Norms Frontiers in Public Health ·Fred Shaffer, J. P. Ginsberg Hit paper breakdown →	2017	4207
2	A healthy heart is not a metronome: an integrative review of the heart's anatomy and heart rate variability Frontiers in Psychology ·Fred Shaffer, Rollin McCraty, C Zerr Hit paper breakdown →	2014	1293
3	Heart Rate Variability: New Perspectives on Physiological Mechanisms, Assessment of Self-regulatory Capacity, and Health Risk Global Advances in Health and Medicine ·Rollin McCraty, Fred Shaffer Hit paper breakdown →	2015	668
4	A Critical Review of Ultra-Short-Term Heart Rate Variability Norms Research Frontiers in Neuroscience ·Fred Shaffer, Zachary M. Meehan, C Zerr	2020	133
5	A Practical Guide to Resonance Frequency Assessment for Heart Rate Variability Biofeedback Frontiers in Neuroscience ·Fred Shaffer, Zachary M. Meehan	2020	83
6	Electromyographic assessment of chronic low-back pain syndrome. PubMed ·WH Hoyt, Hunt Hh, MA De Pauw, D A Bard, Fred Shaffer, JN Passias, Robbins Dh, DG Runyon, SE Semrad, JT Symonds, KC Watt	1981	48
7	Heart Rate Variability Anatomy and Physiology Biofeedback ·Fred Shaffer, John Venner	2013	45
8	Osteopathic manipulation in the treatment of muscle-contraction headache. PubMed ·WH Hoyt, Fred Shaffer, D A Bard, J S Benesler, G D Blankenhorn, Jayla Gray, W T Hartman, L C Hughes	1979	39
9	Don't Add or Miss a Beat: A Guide to Cleaner Heart Rate Variability Recordings Biofeedback ·Fred Shaffer, Didier Combatalade	2013	21
10	Garbage In; Garbage Out—Identify Blood Volume Pulse (BVP) Artifacts Before Analyzing and Interpreting BVP, Blood Volume Pulse Amplitude, and Heart Rate/Respiratory Sinus Arrhythmia Data Biofeedback ·Erik Peper, Fred Shaffer, I‐Mei Lin	2010	11
11	Biofeedback History: An Alternative View Biofeedback ·Erik Peper, Fred Shaffer	2010	8
12	Rhythmic Skeletal Muscle Tension Increases Heart Rate Variability at 1 and 6 Contractions Per Minute Applied Psychophysiology and Biofeedback ·Fred Shaffer, Donald Moss, Zachary M. Meehan	2022	7
13	Practical Anatomy and Physiology: The Skeletal Muscle System Biofeedback ·Fred Shaffer, Randy Neblett	2010	6
14	Review of I. Z. Khazan (2019), Biofeedback and Mindfulness in Everyday Life: Practical Solutions for Improving Your Health and Performance. W. W. Norton and Company Applied Psychophysiology and Biofeedback ·Fred Shaffer, Donald Moss	2022	5
15	Experience with an antigravity leverage device for chronic low back pain: a clinical study. PubMed ·WH Hoyt, D A Bard, Fred Shaffer	1981	4
16	Do Longer Exhalations Increase HRV During Slow-Paced Breathing? Applied Psychophysiology and Biofeedback ·Zachary M. Meehan, Fred Shaffer	2024	3
17	Biofeedback History: An Alternative View Biofeedback ·Erik Peper, Fred Shaffer	2018	3
18	Adding Core Muscle Contraction to Wrist-Ankle Rhythmical Skeletal Muscle Tension Increases Respiratory Sinus Arrhythmia and Low-Frequency Power Applied Psychophysiology and Biofeedback ·Zachary M. Meehan, Fred Shaffer	2022	2
19	An Undergraduate Program with Heart: Thirty Years of Truman HRV Research Applied Psychophysiology and Biofeedback ·Fred Shaffer, Zachary M. Meehan	2022	2
20	Making the Unaware Aware: Surface Electromyography to Unmask Tension and Teach Awareness Biofeedback ·Erik Peper, Annette Booiman, I‐Mei Lin, Fred Shaffer	2014	2

About Fred Shaffer

Fred Shaffer is a scholar working on Cardiology and Cardiovascular Medicine, Biomedical Engineering, Complementary and alternative medicine, Surgery and Pharmacology, having authored 26 papers that have together received 6.6k indexed citations. Recurring topics across this work include Heart Rate Variability and Autonomic Control (15 papers), Non-Invasive Vital Sign Monitoring (8 papers), Cardiovascular and exercise physiology (8 papers), Musculoskeletal pain and rehabilitation (3 papers), Cardiovascular Syncope and Autonomic Disorders (2 papers), Health and Medical Research Impacts (2 papers), Behavioral and Psychological Studies (1 paper) and Neuroscience of respiration and sleep (1 paper). The work is most often cited by research in Cardiology and Cardiovascular Medicine (4.7k citations), Complementary and alternative medicine (878 citations), Behavioral Neuroscience (372 citations), Experimental and Cognitive Psychology (1.1k citations) and Cognitive Neuroscience (1.2k citations). Fred Shaffer has collaborated with scholars based in United States and Taiwan. Frequent co-authors include J. P. Ginsberg, Rollin McCraty, C Zerr, Zachary M. Meehan, Erik Peper, Donald Moss, Jayla Gray, I‐Mei Lin, Randy Neblett and Richard Harvey. Their work appears in journals such as Frontiers in Neuroscience, Frontiers in Public Health, Frontiers in Psychology, Global Advances in Health and Medicine and Applied Psychophysiology and Biofeedback.

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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