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Related Experiment Videos

Interval training in elderly men increases both heart rate variability and baroreflex activity.

Vincent Pichot1, Frédéric Roche, Christian Denis

  • 1Laboratoire de Physiologie, GIP E2S, Université de Saint-Etienne, Saint-Etienne, France. vincent.pichot@unit-st-etienne.fr

Clinical Autonomic Research : Official Journal of the Clinical Autonomic Research Society
|April 19, 2005
PubMed
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Intensive endurance training in elderly men significantly improved autonomic nervous system function. This exercise intervention boosted heart rate variability and baroreflex activity, suggesting enhanced cardiovascular health in older adults.

Area of Science:

  • Cardiovascular Physiology
  • Gerontology
  • Exercise Science

Background:

  • Autonomic nervous system (ANS) activity declines with age, correlating with increased disease risk and mortality.
  • Reactivating ANS function is a key strategy for improving health in the elderly.

Purpose of the Study:

  • To investigate the effects of intensive cycloergometer interval training on ANS activity in elderly men.
  • To assess changes in maximal oxygen consumption (VO2max), heart rate variability (HRV), and spontaneous cardiac baroreflex activity (SBR) following a 14-week training program.

Main Methods:

  • Eleven elderly men (average age 73.5 years) underwent a 14-week intensive cycloergometer interval training program.
  • VO2max, HRV (time and frequency domain analyses), and SBR (sequence and cross-spectral methods) were measured before and after training.

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  • 24-hour, daytime, and nighttime Holter recordings were used for HRV analysis.

    • Main Results:

    • VO2max increased by 18.6% post-training (p<0.01).
    • Nocturnal parasympathetic HRV indices (PNN50, RMSSD, HF) showed significant increases (p<0.05).
    • SBR indices (slSBR, alphaSBRHF) significantly improved post-training (p<0.01 and p<0.05, respectively).

    Conclusions:

    • Intensive endurance training effectively enhances parasympathetic parameters of HRV and SBR in elderly men.
    • These findings suggest potential benefits for cardiovascular health and autonomic function in aging populations.
    • Further research is warranted to explore the physiological mechanisms and long-term clinical implications.