Biofeedback Treatment for Asthma
Biofeedback is a scientifically validated therapy for the management of asthma.
It works by measuring aspects of breathing physiology associated with asthma attacks. By feeding
this information back to you via computer, biofeedback enables you to
- become aware of changes and bodily responses that predispose you to asthma attacks
- learn to access more optimal physiological states.
Biofeedback can both reduce your vulnerability to attacks and teach you effective
ways to manage asthma attacks.
Asthma and Breathing Physiology
What physiological parameters can we measure, as the basis of biofeedback for asthma?
- Heart Rate Variability (HRV) - an indicator of Autonomic Nervous System (ANS)
functioning, known to be out of balance in asthma. Breathing training with the aid of HRV biofeedback helps
create a more optimal balance.
(Read more about HRV biofeedback.)
- Capnometry Biofeedback - paradoxically, many asthma sufferers over-breathe,
and this exacerbates the symptoms of asthma. A capnometer is an instrument that can detect over-breathing
and help you learn to optimise your breathing.
(Read more about capnometry biofeedback.)
What's The Evidence?
Capnometry Biofeedback Treatment for Asthma
In this study a group of asthma sufferers were taught to optimise their breathing with the help of
capnometry biofeedback and reported that "frequency and distress of symptoms was reduced and reported
asthma control increased."
Heart Rate Variability Biofeedback for Asthma
In this research a group of asthma volunteers were trained in HRV biofeedback.
Results showed "improvements averaged one full level of asthma severity". Trainees needed
less medication compared to controls. Objective measurement "showed improvement in pulmonary function".
About Asthma
An asthma attack involves reversible obstruction of the airways caused by inflammation, constriction
of the (unconsciously controlled) muscles in the walls of the airways, mucus congestion, or a combination
of these. There are many possible triggers, including allergens such as dust mites, environmental irritants such as smoke,
viral infections, exercise, cold air and stress.
Asthma & The ANS
The smooth muscles of the airways are under the control of the Autonomic Nervous System (ANS). The ANS has two
branches, the sympathetic and parasympathetic, which need to be in healthy balance. Asthma is associated with
excessive parasympathetic activity.
Asthma & Hyperventilation
Many of the symptoms of asthma, such as chest tightness or pain, feelings of
breathlessness, palpitations and anxiety are also symptoms of hyperventilation or over-breathing.
Hyperventilation is a characteristic response to stress, and so it commonly compounds asthma symptoms in
a negative spiral.
Asthma Links
Asthma UK: charity dedicated to improving
the health of Britain's millions of asthma sufferers.
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