Document Detail

Analysis of heart rate variability at rest and during aerobic exercise: a study in healthy people and cardiac patients.
MedLine Citation:
PMID:  18199627     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To analyse HRV at rest in healthy people and in patients with acute myocardial infarction (AMI) and how it changes during aerobic exercise. METHODS: The heartbeat signal was recorded beat to beat for 15 minutes at rest and 15 minutes while pedalling in 10 healthy and active men (H group) and 10 cardiac patients (C group). The statistical parameters in the time domain were calculated as well as the spectral analysis applying the Fast Fourier Transform (FFT) and Poincare's graphic analysis (PGA). RESULTS: At rest, H group have an average SDRR (standard deviation of RR intervals) of 71.24 msec, a pRR50 (percentage of differences higher than 50 msec in RR intervals) of 9.97% and a PGA called "comet-type". The C group have a SDRR of 36.69 msec, a pRR50 of 1.69%, and a PGA "torpedo-type". These data show a low or moderate risk for healthy people and a high risk for patients. The FFT analysis lies in the very-low-frequency (VLF) zone in both groups. During exercise, H group shows a significant decrease in all parameters; the PGA turns to "torpedo-type" and the FFT remains in the VLF zone. However, C group is characterised by the maintenance of pRR50, no change in PGA and a second peak in FFT in the high-frequency zone. CONCLUSION: The HRV at rest and during aerobic exercise follows a different pattern in healthy people and in patients and it provides further information about performance during exercise.
B de la Cruz Torres; C López López; J Naranjo Orellana
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Publication Detail:
Type:  Journal Article     Date:  2008-01-16
Journal Detail:
Title:  British journal of sports medicine     Volume:  42     ISSN:  1473-0480     ISO Abbreviation:  Br J Sports Med     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-09-10     Completed Date:  2008-11-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0432520     Medline TA:  Br J Sports Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  715-20     Citation Subset:  IM    
Centro Andaluz de Medicina del Deporte, CAR La Cartuja, Isla de la Cartuja s/n Sevilla, 41092, Spain.
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MeSH Terms
Exercise / physiology*
Fourier Analysis
Heart Rate / physiology*
Middle Aged
Myocardial Infarction / physiopathology*
Rest / physiology*
Risk Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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