@inproceedings{dc542933812248129e570832bf281457,
title = "Cyclic variation in heart rate during sleep in four recordings of up to 13 years in elderly adults",
abstract = "To characterize changes in nighttime cyclic variation in HR (CVHR) with advancing age in older adults, CVHR was quantified for N=56 adults with 2 Holter recordings 5 yrs apart (CHS1 and CHS 2) in the Cardiovascular Health Study (CHS) and 2 overnight polysomnograms 5 yrs apart in the Sleep Heart Health Study (SHHS1 and SHHS2) using MatLab. Baseline age was 71±3yrs. The number of CVHR events was also normalized to time in bed (CVHR Index). CVHR Index did not change across recordings, but males had higher values (p=0.009). Mean HR increase during CVHR was similar in the first 3 recording but declined on the last (p<0.02). CVHR duration increased, but CHS1 vs. CHS2 and SHHS1 vs. SHHS2 were NS (rest, p<0.007). We conclude that CVHR is frequent at night in older adults, but results suggest an age-related trend towards decreased magnitude and longer durations of HR arousals, possibly due to the aging of the autonomic nervous system.",
author = "Stein, {P. K.} and Cohen, {R. J.} and Devlin, {N. M.} and Lundequam, {E. M.} and Domitrovich, {P. P.} and Gottdiener, {J. S.} and Redline, {S. R.}",
year = "2007",
doi = "10.1109/CIC.2007.4745414",
language = "English",
isbn = "9781424425334",
series = "Computers in Cardiology",
pages = "33--35",
booktitle = "Computers in Cardiology 2007, CAR 2007",
note = "Computers in Cardiology 2007, CAR 2007 ; Conference date: 30-09-2007 Through 03-10-2007",
}