Effects of load and type of physical training on resting and postexercise cardiac autonomic control

• Published in: Clinical physiology and functional imaging 2014-03, Vol.34 (2), p.114-120
• Main Authors: Guerra, Zaqueline F., Peçanha, Tiago, Moreira, Débora N., Silva, Lilian P., Laterza, Mateus C., Nakamura, Fábio Y., Lima, Jorge R. P.
• Format: Article
• Language: English
• Subjects: Adult; autonomic modulation; autonomic nervous system; Autonomic Nervous System - physiology; endurance training; Exercise; Exercise Test; Heart - innervation; Heart Rate; heart rate recovery; Humans; Male; Muscle Contraction; Recovery of Function; Resistance Training; Rest; Sedentary Lifestyle; Supine Position; Time Factors; Vagus Nerve - physiology; Young Adult
• ISSN: 1475-0961; 1475-097X
• DOI: 10.1111/cpf.12072

Summary The aim of the study was to investigate the influence of training load and exercise mode on heart rate variability and heart rate recovery (HRR) in healthy individuals. The subjects were divided into three groups: sedentary (SED), resistance trained (RT) and aerobically trained (RT). Resting and postmaximal exercise RR intervals were recorded on supine and seated position, respectively. The HRV indices calculated in the resting position were RMSSD and LF and HF power densities. The following HRR indices were calculated throughout the 5‐minute postmaximal recovery period: semi‐logarithmic regression analysis of the first 30 s (T30); absolute difference between the peak and 60 s HR (HRR60s); and mono‐exponential time constant of HRR (HRRτ). The RMSSD on subsequent 30‐s segments (RMSSD30s) on recovery period was also calculated. Both RT and AT groups presented faster HRR than SED (P