To assess the efficiency of health training based on Nordic walking, stress levels and the degree of tension of regulatory systems in mature women, a study of heart rate variability may be applied. The study involved women who regularly engaged in health classes based on Nordic walking (n=10) - the experimental group and women who did not regularly exercise (n=10) - the control group. The authors have found that the functional state of women who regularly engage in health classes is more characterized by an optimal level of regulation of physiological functions. It was also revealed that women who do not exercise regularly are in a state characterized by pronounced depletion of regulatory systems.