Advertisement

Heart rate variability during dynamic exercise in elderly males and females

  • Renza Perini
  • Stefania Milesi
  • Nadine M. Fisher
  • David R. Pendergast
  • Arsenio Veicsteinas
ORIGINAL ARTICLE

Abstract

It has been proposed that cardiac control is altered in the elderly. Power spectral analysis of heart rate variability (HRV) was performed on 12 male and 11 female elderly subjects (mean age 74 years) while at rest in supine and sitting positions, and at steady states during 5 min of exercise (35–95% peak oxygen consumption, O2peak). There were no differences in power, measured as a percentage of the total of the high frequency peak (HF, centred at about 0.25 Hz; 13% in males vs 12% in females), low frequency peak (LF, centred at 0.09 Hz; 25% in males and 22% in females), and very low frequency component (VLF, at 0.03 Hz; 66% in males and 69% in females) between body positions at rest. There was no difference in spectral power between male and female subjects. Total power decreased as a function of oxygen consumption during exercise, LF% did not change up to about 14 ml · kg−1 · min−1 (40% and 80% O2peak in males and females, respectively), then decreased towards minimal values in both genders. HF% power and central frequency increased linearly with metabolic demand, reaching higher values in male subjects than in female subjects at O2peak, while VLF% remained unchanged. Thus, the power spectra components of HRV did not reflect the changes in autonomic activity that occur at increasing exercise intensities, confirming previous findings in young subjects, and indicated similar responses in both genders.

Key words Heart rate variability Ageing Gender Autonomic nervous system Exercise 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Renza Perini
    • 1
  • Stefania Milesi
    • 1
  • Nadine M. Fisher
    • 2
  • David R. Pendergast
    • 2
  • Arsenio Veicsteinas
    • 1
  1. 1.Cattedra di Fisiologia Umana, Dipartimento di Scienze Biomediche e Biotecnologie, Università di Brescia, Via Valsabbina 19, 25123 Brescia, Italy e-mail: perini@med.unibs.it Tel.: +39-030-3717450; Fax: +39-030-3701157IT
  2. 2.Department of Physiology and Department of Rehabilitation Medicine, State University of New York at Buffalo, N.Y., USAUS

Personalised recommendations