A chronotherapy exercise technique for treating a patient whose abnormal condition,
regardless of its nature or origin, is reflected by a heart rate variability (HRV)
that is reduced and deviates from an HRV reflecting a normal condition. In this
treatment, the patient in an exercise session undergoes a series of exercise-relaxation
cycles in which during each cycle the pulse rate of the patient rises and then
falls to generate a heart wave. To enhance the efficacy of the treatment, the heart
waves generated in the course of an exercise session are synchronized in time with
an internal wave produced by a biological clock, this activity functioning to expand
the range of the biological wave and inducing the HRV to approach an HRV, which
for the patient being treated reflects a normal condition.
