A preliminary study into the effect of biofeedback on end tidal carbon dioxide levels during slow breathing in healthy volunteers
Gahr, Kate, Bishop, Ajay and Bruton, Anne (2006) A preliminary study into the effect of biofeedback on end tidal carbon dioxide levels during slow breathing in healthy volunteers. At European Respiratory Society Annual Congress, Munich, Germany, 02 - 06 Oct 2006. (Submitted).
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Description/Abstract
Objectives:
To investigate the effect of visual biofeedback on end tidal carbon dioxide levels during slow breathing in healthy volunteers.
Design: Preliminary study with experimental design in which each participant experienced both conditions i.e. slow breathing with and without visual biofeedback
Setting:
Human Performance Laboratory, university campus
Participants:
Fifteen university students.
Baseline data and outcome measures:
Primary outcome measure was end tidal carbon dioxide (ETCO2); Secondary outcomes were respiratory rate; pulserate; non-invasive oxygen saturations; lung function
Results:
There was a mean rise in ETCO2 of 0.35 k Pa (CI0.09–0.6) during slow breathing with visual biofeedback, and 0.36 k Pa (CI0.13–0.6) without biofeedback. The use of visual feedback had no observable effect on ETCO2 despite participants successfully reducing their respiratory rate further under this condition
(mean 5 breaths per minute with feedback, versus 7 without feedback). ETCO2 and respiratory rate were negatively correlated under both conditions (Pearson’sr = 0.42).
Conclusions:
In this study of healthy volunteers manipulating respiratory rate was
found to result in a significant rise in ETCO2 levels under both conditions, but the use of visual biofeedback had no significant additional effect on ETCO2. Visual biofeedback did have a statistically significant effect on respiratory rate, enabling subjects to achieve lower rates than in the absence of biofeedback. This suggests
visual biofeedback may have a role in enabling people to reduce breathing rates, but this needs to be confirmed by larger trials.
| Item Type: | Conference or Workshop Item (Poster) |
|---|---|
| Related URLs: | |
| Subjects: | R Medicine > RZ Other systems of medicine Q Science > QP Physiology |
| Divisions: | University Structure - Pre August 2011 > Superseded (SOHPRS) |
| Item ID: | 55108 |
| Date Deposited: | 05 Aug 2008 |
| Last Modified: | 02 Mar 2012 12:12 |
| Contributors: | Gahr, Kate (Author) Bishop, Ajay (Author) Bruton, Anne (Author) |
| Date: | 2006 |
| Status: | Submitted |
| URI: | http://eprints.soton.ac.uk/id/eprint/55108 |
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