Resting heart rate variability and heart rate reco

Authors: Aljoša Danieli Lara Lusa Nejka Potočnik Bernard Meglič Anton Grad Fajko F Bajrović

Publish Date: 2014/02/08

Volume: 24, Issue: 2, Pages: 53-61

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Abstract

Aerobic training accelerates Heart Rate Recovery after exercise in healthy subjects and in patients with coronary disease As shown by pharmacological autonomic blockade HRR early after exercise is dependent primarily on parasympathetic reactivation Thus accelerated HRR early after exercise in endurancetrained athletes may be attributed to augmented parasympathetic reactivation In the present study we tested the hypothesis that the HRR early after submaximal exercise is related to the preexercise parasympathetic modulationThirty endurancetrained athletes 20 males 50 ± 7 years and thirty control subjects 20 males 52 ± 6 years performed a submaximal exercise on a cycloergometer Preexercise resting shortterm heart rate variability HRV parameters in time and frequencydomains were correlated with HRR during the first 30 s 1 and 2 min after cessation of exerciseWe found that HRR was statistically significantly faster in athletes than in controls at all examination time points p  005 HF SDNN and RMSSD were statistically significantly higher in athletes than in controls p  005 but other resting HRV parameters were not statistically different between groups After 30 s 1 and 2 min of recovery HRR correlation with total power HF HFnu and RMSSD was positive while the correlation with LF/HF was negative for small and positive for larger values The opposite was true for SDNN

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