R-R intervals during deep breathing. comparison between old and young subjects.
نویسندگان
چکیده
منابع مشابه
Periodic variation in R-R intervals and cardiovascular autonomic regulation in young adult Syrian hamsters.
Several hamster strains are commonly used as models for cardiomyopathic phenotypes evolving toward heart failure. However, little is known about heart rate variability (HRV) in this species. Prolonged surface ECG recording, a prerequisite to HRV studies, can be obtained either by telemetry or by restraints. Here, we performed long time ECG recording using telemetry on young adult Syrian hamster...
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Serial autocorrelation functions and histograms of R-R intervals in patients with atrial fibrillation, with and without digitalis, at rest and during exercise, were produced by a computer. At rest with and without digitalis the first and higher order coefficients did not differ from zero. During exercise (also with and without digitalis) only the first autocorrelation coefficient became slightl...
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ژورنال
عنوان ژورنال: Journal of exercise physiology
سال: 1991
ISSN: 0912-7100
DOI: 10.1589/rika1986.6.187