Breathing trial found no clear response advantage for a biofeedback device
Nausea ratings improved in both breathing groups, but the pilot comparison did not establish that the device produced better response rates than written instructions.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Both groups reported less nausea during the study, and response rates did not differ significantly between them. After adjustment for multiple statistical comparisons, clear improvement with written instructions was limited to the early weeks. Because everyone received a breathing intervention, the study cannot establish how either approach compares with receiving no breathing intervention.
This abstract-based summary relies on self-reported symptoms from a pilot study. No group received usual care without a breathing intervention, and the abstract provides no numerical response rates or between-group effect estimate.
What the comparison answers
The comparison addressed how breathing practice was delivered: through written instructions or a device. It did not isolate breathing itself from other explanations for symptom change, because there was no non-breathing comparison group.
Why statistical adjustment matters
Accounting for multiple comparisons weakened some of the apparent improvements over time. A significant result in the written-instruction group alone does not demonstrate that written instructions outperform the device; the response-rate comparison found no clear separation.
The original publication
Improving Nausea Through Breathing Interventions: A Trial of Written Instructions for Diaphragmatic Breathing Versus a Biofeedback Device.
Chakraborty S
Can J Gastroenterol Hepatol · 2026
- PubMed ID
- 41811802
- Record checked
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