Abstract
While it is known that endpoints of HRV undergo a circadian variation, time-specified reference value ranges are lacking. To fill this void, peer-group reference standards are presented. They are derived on the basis of data from 219 healthy males in 8 age groups: 5-10 years, 10-20 years, 20-30 years, 30-40 years, 40-50 years, 50-60 years, 60-70 years and >70 years, and from 117 healthy females in 4 age groups: <20 years, 20-40 years, 40-60 years, and >60 years. The spectral Q component (Q for quadrisecundan, rather than `HF') and the D/Q ratio (D for decisecundan, rather than `LF/HF') were computed hourly for 24 hours. Time-specified reference limits (chronodesms) were computed for each variable in each group as 90% prediction limits. Circadian chronodesms in different age groups indicate that both Q and D/Q vary greatly as a function of age. Chronodesms here proposed may serve for evaluating risk and the efficacy of various interventions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 587-590 |
| Number of pages | 4 |
| Journal | Computers in Cardiology |
| State | Published - Dec 1 1999 |
| Event | The 26th Annual Meeting: Computers in Cardiology 1999 - Hannover, Ger Duration: Sep 26 1999 → Sep 29 1999 |
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Circadian reference values for different endpoints of heart rate variability. / Otsuka, Kuniaki; Cornelissen-Guillaume, Germaine G; Shinagawa, M.; Nishimura, Y.; Kubo, Y.; Hotta, N.; Fujii, C.; Ishii, T.; Omori, K.; Watanabe, Y.; Nunoda, S.; Ohkawa, S.; Halberg, F.
In: Computers in Cardiology, 01.12.1999, p. 587-590.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Circadian reference values for different endpoints of heart rate variability
AU - Otsuka, Kuniaki
AU - Cornelissen-Guillaume, Germaine G
AU - Shinagawa, M.
AU - Nishimura, Y.
AU - Kubo, Y.
AU - Hotta, N.
AU - Fujii, C.
AU - Ishii, T.
AU - Omori, K.
AU - Watanabe, Y.
AU - Nunoda, S.
AU - Ohkawa, S.
AU - Halberg, F.
PY - 1999/12/1
Y1 - 1999/12/1
N2 - While it is known that endpoints of HRV undergo a circadian variation, time-specified reference value ranges are lacking. To fill this void, peer-group reference standards are presented. They are derived on the basis of data from 219 healthy males in 8 age groups: 5-10 years, 10-20 years, 20-30 years, 30-40 years, 40-50 years, 50-60 years, 60-70 years and >70 years, and from 117 healthy females in 4 age groups: <20 years, 20-40 years, 40-60 years, and >60 years. The spectral Q component (Q for quadrisecundan, rather than `HF') and the D/Q ratio (D for decisecundan, rather than `LF/HF') were computed hourly for 24 hours. Time-specified reference limits (chronodesms) were computed for each variable in each group as 90% prediction limits. Circadian chronodesms in different age groups indicate that both Q and D/Q vary greatly as a function of age. Chronodesms here proposed may serve for evaluating risk and the efficacy of various interventions.
AB - While it is known that endpoints of HRV undergo a circadian variation, time-specified reference value ranges are lacking. To fill this void, peer-group reference standards are presented. They are derived on the basis of data from 219 healthy males in 8 age groups: 5-10 years, 10-20 years, 20-30 years, 30-40 years, 40-50 years, 50-60 years, 60-70 years and >70 years, and from 117 healthy females in 4 age groups: <20 years, 20-40 years, 40-60 years, and >60 years. The spectral Q component (Q for quadrisecundan, rather than `HF') and the D/Q ratio (D for decisecundan, rather than `LF/HF') were computed hourly for 24 hours. Time-specified reference limits (chronodesms) were computed for each variable in each group as 90% prediction limits. Circadian chronodesms in different age groups indicate that both Q and D/Q vary greatly as a function of age. Chronodesms here proposed may serve for evaluating risk and the efficacy of various interventions.
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UR - http://www.scopus.com/inward/citedby.url?scp=0033282130&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0033282130
SP - 587
EP - 590
JO - Computing in Cardiology
JF - Computing in Cardiology
SN - 2325-8861
ER -