Abstracts of Posters Presented at the 48th Annual Meeting of the Association for Applied Psychophysiology and Biofeedback
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The following abstracts were inadvertently omitted when the meeting abstracts were published in a prior issue of Applied Psychophysiology and Biofeedback (2017, 42, 147–161).
Breathing Effort May Not Reduce Heart Rate Variability When Respiration Rate Is Controlled
Zachary Meehan1, Nathan Muesenfechter1, Nicholas Gravett1, Tina Watson1, Andrew Smith1, Steven Shearman1, Zachary Bartochowski1, Alexis West1, Fredric Shaffer1
1Center for Applied Psychophysiology, Truman State University, 100 E. Normal, Kirksville, MO 63501, USA
Clinical lore that breathing effort reduces heart rate variability (HRV) may conflate effort with respiration rate. The challenges in testing this belief were operationalizing breathing effort and preventing confounding by respiration rate. Breathing effort was operationally defined as the degree of abdominal excursion (i.e., the range of respirometer movement during each breathing cycle). An animated pacer kept respiration rate...