Effets d’un programme de marche rapide chez le sujet institutionnalisé sur l’activité du système nerveux ­autonome

Abstract

Introduction: The age-related decline of the autonomic nervous system (ANS) activity is a well-known risk factor for adverse cardiovascular outcomes that can be prevented through regular physical activity (PA) but PA engagement remains too low in older adults. The aim of this study was to investigate the effects of a 9-month brisk walking training on the ANS activity assessed through the measure of heart rate variability (HRV). Methods: Sixty-one older adults aged 60 and over were recruited among 14 French nursing homes to participate in a randomized control trial that consisted of a 9-month brisk walking training. They were randomized into three intervention groups: 1 exercise session per week, 3 exercise sessions per week, and a control group. HRV was measured at baseline and at the 3, 6, and 9-month visits. Results: Compared with individuals from the control group and those who exercised 1 day per week, older adults who performed 3 sessions per week exhibited a significant improvement in HRV indices of parasympathetic activity (root mean square of successive differences – RMSSD). Conclusion: Regular PA performed 3 times per week is effective in enhancing cardiac autonomic drive in nursing home older adults aged 60 and over.