respiratory exerciser for inspiration exercises (SMI = sustained maximal inspiration) and trainer for expiration exercises (PEP = positive expiratory pressure)
allows the user to practice breathing in slowly, continuously and as deeply as possible and an active, but not forced manoeuvre breathing out against a resistance
simple change of functions
withour contra-indications
by turning the cap the resistance can be comfortably and easily be adjusted
suitable for persons with a lower lung volume and for children
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