Measuring psychomotor agitation by use of an actimeter: a pilot study.
BACKGROUND
Psychomotor agitation is variably defined, with differing emphases on subjective and motor components. We assess the utility of an actimeter to inform us about aspects of the motor component.


METHODS
A wrist actimeter measured motor activity of three inpatients with agitated depression.


RESULTS
For each patient, diurnal activity patterns were observed, with activity generally elevated in mornings and late afternoons. Each patient also evidenced a clear decline in motor activity in the mid-evening, with little or no activity recorded during 'sleep' hours. Thus, psychomotor agitation (like motor activity) appears to require a conscious state.


CONCLUSIONS
Actimeters measure any baseline activity together with any superimposed movement component (which may range from movement changes to medication effects), making it difficult to disentangle components. We studied few patients and for brief intervals.
Parker
Gordon
G
School of Psychiatry, University of New South Wales and Mood Disorders Unit, Prince of Wales Hospital, Sydney, Australia.
Gladstone
Gemma
G
Hadzi-Pavlovic
Dusan
D
D000368:Aged; D003865:Major Depressive Disorder / Q000523:psychology* / Q000534:rehabilitation*; D005260:Female; D006801:Humans; D008297:Male; D010865:Pilot Projects; D011584:Psychology / Q000295:instrumentation*; D011595:Psychomotor Agitation / Q000175:diagnosis* / Q000209:etiology*; D012720:Severity of Illness Index