Volkers, A.C.

activity motor motor activity patient effect treatment level study variability subject depression pattern motor activity levels imipramine period hr variability depressive group fluvoxamine disorder risk factors antidepressant depressive disorder factor frequency power chapter baroreflex sensitivity motor activity level parameter heart 24- system personality retardation relationship depressive mood gender score baroreflex variation control analysis orthostatic challenge agitation heart rate variability change model antidepressant treatment reward dependence index psychomotor harm avoidance psychiatry cholinergic sensitivity 24- hour pattern blood orthostatic alteration pressure motor activity parameters supine rest patient group feature anxiety regulation difference measurement cholesterol dysfunction bp variability dimension regression unmedicated heart rate challenge smoking determinant motor activity pattern