BACKGROUND: Only few data are available on reproducibility over time in healthy young men and women and the corresponding gender-related changes of heart rate variability (HRV) measurements. METHODS: We studied temporal and spectral HRV indices obtained from 24-hour Holter recordings in 32 healthy volunteers (14 men and 18 women, mean age 29 +/- 3 years) during 2 days of their usual all-day activity. RESULTS: Time-domain measures and the spectral low-frequency (LF) and high-frequency (HF) components as well as the LF/HF ratio were comparable on both test days. Significantly higher values on test day 2 were observed only for the spectral very-low-frequency (VLF) component and for the resulting total power. Compared to men, women had higher day- and nighttime vagus-associated HRV indices, including root mean square of successive differences (RMSSD), pNN50 (NN50 count divided by the total number of all NN intervals), and HF power, and lower day- and nighttime VLF and LF power with lower LF/HF ratio and total power. CONCLUSIONS: Temporal indices and the LF and HF spectral HRV measures are reproducible over usual all-day activity in young healthy subjects. Young women have higher day-and nighttime vagal tone than men with similar age range.
BACKGROUND: Only few data are available on reproducibility over time in healthy young men and women and the corresponding gender-related changes of heart rate variability (HRV) measurements. METHODS: We studied temporal and spectral HRV indices obtained from 24-hour Holter recordings in 32 healthy volunteers (14 men and 18 women, mean age 29 +/- 3 years) during 2 days of their usual all-day activity. RESULTS: Time-domain measures and the spectral low-frequency (LF) and high-frequency (HF) components as well as the LF/HF ratio were comparable on both test days. Significantly higher values on test day 2 were observed only for the spectral very-low-frequency (VLF) component and for the resulting total power. Compared to men, women had higher day- and nighttime vagus-associated HRV indices, including root mean square of successive differences (RMSSD), pNN50 (NN50 count divided by the total number of all NN intervals), and HF power, and lower day- and nighttime VLF and LF power with lower LF/HF ratio and total power. CONCLUSIONS: Temporal indices and the LF and HF spectral HRV measures are reproducible over usual all-day activity in young healthy subjects. Young women have higher day-and nighttime vagal tone than men with similar age range.
Authors: R E Kleiger; J T Bigger; M S Bosner; M K Chung; J R Cook; L M Rolnitzky; R Steinman; J L Fleiss Journal: Am J Cardiol Date: 1991-09-01 Impact factor: 2.778
Authors: H V Huikuri; K M Kessler; E Terracall; A Castellanos; M K Linnaluoto; R J Myerburg Journal: Am J Cardiol Date: 1990-02-01 Impact factor: 2.778
Authors: D Van Hoogenhuyze; N Weinstein; G J Martin; J S Weiss; J W Schaad; X N Sahyouni; D Fintel; W J Remme; D H Singer Journal: Am J Cardiol Date: 1991-12-15 Impact factor: 2.778
Authors: A Bruchfeld; R S Goldstein; S Chavan; N B Patel; M Rosas-Ballina; N Kohn; A R Qureshi; K J Tracey Journal: J Intern Med Date: 2010-02-18 Impact factor: 8.989
Authors: Badar U Jan; Susette M Coyle; Marie A Macor; Michael Reddell; Steve E Calvano; Stephen F Lowry Journal: Shock Date: 2010-04 Impact factor: 3.454
Authors: Robin C Puett; Jaime E Hart; Helen Suh; Murray Mittleman; Francine Laden Journal: Environ Health Perspect Date: 2011-03-31 Impact factor: 9.031
Authors: Ernesto Kufoy; Jose-Alberto Palma; Jon Lopez; Manuel Alegre; Elena Urrestarazu; Julio Artieda; Jorge Iriarte Journal: PLoS One Date: 2012-03-16 Impact factor: 3.240