>On 7/6/00, [log in to unmask] writes:
>
><< Hi, Sorry that i am not going to give you an appropriate answer to your
>quest due to the fact that I've never heard of this Electrotherapeutic device
>before. Pls could you intimate me on what it is all about. Can APS
>
>units be found with IDC (interrupted direct currents), DC (direct currents)
>etc on the same machine? >>
>
>***APS (Action Potential Simulation) units appear to have been designed on
>the premise that stimulation with electrical currents whose waveform mimics
>that of the characteristic waveform of a single discharging nerve or muscle
>cell should be more effective in stimulating muscle action or relieving pain.
>
stuff deleted...
"muscle" stimulation protocols depolarise the "nerve" to initiate the
muscle depolarisation (IDC is the exception in denervated muscles - and
the waveform of this is not the same as the nerve). The fact that the
stimulus happens to look like the depolarisation wave form of the nerve
does not mean that there is any physiological benefit over a
"non-physiological" waveform.
And I can not even start to mention the factors associated with the
filtering characteristics of the intervening soft tissues.. etc... etc....
when you try to stimulate with bipolar surface electrodes...
but then again there may be some evidence - until then never spoil a good
story with the facts...
________________________________________________
Garry T Allison (A/Professor of Physiotherapy)
The Centre for Musculoskeletal Studies http://www.cms.uwa.edu.au/
Department of Surgery, The University of Western Australia.
Level 2 Medical Research Foundation Building
Rear 50 Murray Street
Perth Western Australia 6000.
email <[log in to unmask]>
ph: (618) 9224 0219
Fax (618) 9224 0204
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