| Autor: |
Metelka R; IIIrd Internal Clinic, Medical Faculty of the Palacky University, Olomouc, Czech Republic., Weinbergová O, Opavský J, Salinger J, Ostranský J |
| Jazyk: |
angličtina |
| Zdroj: |
Acta Universitatis Palackianae Olomucensis Facultatis Medicae [Acta Univ Palacki Olomuc Fac Med] 1999; Vol. 142, pp. 79-82. |
| Abstrakt: |
Heart rate variability reflects the activity of autonomic nervous system. The aim was to evaluate the value of short-term spectral analysis of heart rate for monitoring the effects of exercise training on the autonomic nervous system in subjects following myocardial infarction. Short-term spectral analysis of heart rate variability was performed during standardised supine-standing-supine test in a group of 29 clinically stable patients after myocardial infarction and the same test was repeated after 2 months of exercise training (ergometry or rapid walking). Each subject exercised at 60-80% of his maximal performance for 30 minutes once a day. Short-term spectral analysis of heart rate variability was assessed in the frequency range of 0.02-0.5 Hz involving very low frequency (VLF, 0.02-0.05 Hz), low frequency (LF, 0.05-0.15 Hz) and high frequency (HF, 0.15-0.5 Hz) spectral bands. The influence of exercise training on the autonomic nervous system was registered in the physically active group (n = 16) as a decrease in sympathetic response to standardised orthostatic load. In conclusions the regular exercise influenced an altered neural autonomic regulation of heart rate in post-infarction patients shown by a decrease in sympathetic activity in the short-term heart rate variability. This method enables monitoring of the effects of physical training on the autonomic nervous system in patients following myocardial infarction. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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