Electrical stimulation ventilatory feedback facilitates maintenance of a prolonged expiration pattern during exercise: A proof-of-concept study in healthy adults

This study aimed at verifying the safety and effects of electrical stimulation ventilatory feedback (ESVF) to provide feedback during expiration, which may assist with breathing control in patients with chronic obstructive pulmonary disease (COPD). Because this is a new therapy, we examined the feas...

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Bibliographic Details
Published in:Physiotherapy theory and practice 2016-08, Vol.32 (6), p.483-488
Main Authors: Yamahara, Jun, Ito, Kenichi, Nonaka, Koji
Format: Article
Language:English
Subjects:
Adult
Adults
Bicycling
Breathing
Breathing Exercises - methods
Chronic obstructive pulmonary disease
Electric Stimulation
Electrical stimulation
Exercise
Exercise Test
Exhalation
Feasibility
Feasibility Studies
Feedback
Feedback, Sensory
Female
Healthy Volunteers
Humans
Inhalation
Japan
Lung - innervation
Male
Parameters
Pulmonary Ventilation
Safety
Sensory stimulation
Side effects
Single-Blind Method
Stimulation
Time Factors
Young Adult
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Summary:This study aimed at verifying the safety and effects of electrical stimulation ventilatory feedback (ESVF) to provide feedback during expiration, which may assist with breathing control in patients with chronic obstructive pulmonary disease (COPD). Because this is a new therapy, we examined the feasibility of the therapy in healthy adults. The 23 healthy adult participants were randomized into two groups: a stimulation group that received ESVF and a placebo group with the ESVF device attached, but not activated. Sensory stimulation was provided at a frequency of 20 Hz and pulse duration of 200 μs. During breathing training, participants practiced a prolonged expiration pattern and were instructed to maintain the breathing pattern during exercise. A variety of parameters such as respiratory time from the gas analyzer monitor and quantitative load were measured during lower-extremity cycle ergometer exercise. The primary outcome was the expiratory to inspiratory time ratio, which was significantly higher in the stimulation group than in the placebo group, both during and after exercise. No side effects were reported during the use of electrical stimulation. Therefore, ESVF is safe and facilitates maintenance of a prolonged expiration pattern during and after exercise.
ISSN:0959-3985
1532-5040
DOI:10.1080/09593985.2016.1202363