This Investigation was undertaken to develop a system for monitoring the electrocardiogram during body move¬ment. Two new lead systems were devised that produced Interpretable electrocardiograms and were insensitive to moderate body movements. A new stainless-steel mesh electrode designed for this investigation provided technically satisfactory electrocardiograms during all body movements. The best method of applying these electrodes to the skin was with adhesive tape. Good electrode-to-skin contact was obtained for as long as 6 hours. For monitoring of the electrocardiogram with the new lead system, a recording frequency band pass of 0.1 to 20 cps produced interpretable electrocardiograms during moderate body movement. With more strenuous activities, a recording frequency band pass of 0.8 to 10 cps produced inter¬pretable electrocardiograms; however, the amplitude and shape of the characteristic waves were modified.
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