TY - JOUR
T1 - Heart rate recovery after exercise
T2 - Computers in Cardiology 2003
AU - Davrath, L. R.
AU - Beck, Pinhas A.
AU - Scheinowitz, M.
AU - Elian, D.
AU - Akselrod, Solange
PY - 2003
Y1 - 2003
N2 - The reduction in heart rate (HR) during the first min of recovery immediately after a maximal exercise stress test (GXT) has recently been found to be a powerful and independent predictor of mortality. A modified Continuous Wavelet Transform (CWT) designed in our lab, is used to perform time-dependent spectral analysis during the nan steady-state conditions created by GXT. This method provides dynamic measures of the low frequency (LF) and high frequency (HF) peaks, associated with autonomic activity. A group of 18 patients underwent GXT using the Bruce Protocol Five of 18 patients demonstrated pathologic delta HR (≤18 bpm), while 13 patients displayed normal delta HR (>18 bpm). Patients with pathologic delta HR displayed significantly (p<0.05) lower HF fluctuations at one-min post exercise than did the controls. Attenuated delta HR upon recovery from GXT is indeed associated with abnormal vagal function, as assessed by CWT.
AB - The reduction in heart rate (HR) during the first min of recovery immediately after a maximal exercise stress test (GXT) has recently been found to be a powerful and independent predictor of mortality. A modified Continuous Wavelet Transform (CWT) designed in our lab, is used to perform time-dependent spectral analysis during the nan steady-state conditions created by GXT. This method provides dynamic measures of the low frequency (LF) and high frequency (HF) peaks, associated with autonomic activity. A group of 18 patients underwent GXT using the Bruce Protocol Five of 18 patients demonstrated pathologic delta HR (≤18 bpm), while 13 patients displayed normal delta HR (>18 bpm). Patients with pathologic delta HR displayed significantly (p<0.05) lower HF fluctuations at one-min post exercise than did the controls. Attenuated delta HR upon recovery from GXT is indeed associated with abnormal vagal function, as assessed by CWT.
UR - http://www.scopus.com/inward/record.url?scp=4143091741&partnerID=8YFLogxK
U2 - 10.1109/cic.2003.1291190
DO - 10.1109/cic.2003.1291190
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AN - SCOPUS:4143091741
SN - 0276-6574
VL - 30
SP - 453
EP - 456
JO - Computers in Cardiology
JF - Computers in Cardiology
Y2 - 21 September 2003 through 24 September 2003
ER -