Showing 1 - 4 results of 4 for search 'Fred Shaffer', query time: 0.06s Refine Results
  1. 1
    Corrigendum: A Practical Guide to Resonance Frequency Assessment for Heart Rate Variability Biofeedback
    by Fred Shaffer, Zachary M. Meehan
    Published 2020-12-01
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    Article
  2. 2
    A Practical Guide to Resonance Frequency Assessment for Heart Rate Variability Biofeedback
    by Fred Shaffer, Zachary M. Meehan
    Published 2020-10-01
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    Article
  3. 3
    An Overview of Heart Rate Variability Metrics and Norms
    by Fred Shaffer, J. P. Ginsberg
    Published 2017-09-01
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    Article
  4. 4
    A Critical Review of Ultra-Short-Term Heart Rate Variability Norms Research
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    Article
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