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Effects of load and type of physical training on resting and postexercise cardiac autonomic control
Author(s) -
Guerra Zaqueline F.,
Peçanha Tiago,
Moreira Débora N.,
Silva Lilian P.,
Laterza Mateus C.,
Nakamura Fábio Y.,
Lima Jorge R. P.
Publication year - 2014
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/cpf.12072
Subject(s) - medicine , supine position , cardiology , heart rate variability , heart rate , ventilatory threshold , physical therapy , physical medicine and rehabilitation , blood pressure , vo2 max
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 ( HRR 60s ); and mono‐exponential time constant of HRR ( HRR τ). The RMSSD on subsequent 30‐s segments ( RMSSD 30s ) on recovery period was also calculated. Both RT and AT groups presented faster HRR than SED ( P <0·05). The aerobic trained group was the only group that presented vagal reactivation, when analysing the RMSSD 30s . There were no correlations between the Baecke sport score and the HRV vagal‐related indices. However, it was significantly correlated with HRR . It was concluded that that the training load positively influences the HRR , but has no effect on the HRV at rest and that the type of exercise, showed a marked influence on HRV recovery.