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Related Experiment Videos

Strength training and hemodynamic responses to exercise.

Kevin R Vincent1, Heather K Vincent, Randy W Braith

  • 1Center for Exercise Science, College of Health and Human Performance, University of Florida, Gainesville, FL, USA. kvincent@ufl.edu

The American Journal of Geriatric Cardiology
|March 8, 2003
PubMed
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High-intensity exercise significantly improves cardiovascular response and recovery in older adults. Resistance training enhances heart rate and blood pressure regulation during and after exertion.

Area of Science:

  • Exercise Physiology
  • Cardiovascular Health
  • Gerontology

Background:

  • Aging is associated with declines in cardiovascular function and recovery capacity.
  • Strength training is recommended for older adults, but optimal intensity for cardiovascular benefits is debated.

Purpose of the Study:

  • To investigate the effects of low-intensity exercise (LEX) and high-intensity exercise (HEX) on cardiovascular responses to graded exercise tests (GXT) in older adults.
  • To compare the cardiovascular adaptations to 24 weeks of LEX versus HEX in this population.

Main Methods:

  • Sixty-two older adults were randomized into control, LEX (50% 1RM, 13 reps), or HEX (80% 1RM, 8 reps) groups.
  • Participants trained for 24 weeks, performing 1 set of 13 exercises.
  • Cardiovascular parameters (heart rate, blood pressure) were measured at rest, during GXT, and post-GXT at baseline and after training.

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Main Results:

  • Both LEX and HEX groups showed increased time to peak systolic/diastolic blood pressure and heart rate post-training.
  • The HEX group exhibited significantly decreased diastolic blood pressure, heart rate, and mean arterial pressure during GXT.
  • Post-GXT heart rate recovery was faster in both LEX and HEX groups compared to the control group.

Conclusions:

  • Resistance exercise, particularly high-intensity, prolongs the onset of peak cardiovascular responses during exertion.
  • High-intensity resistance training reduces the cardiovascular strain during maximal exertion and enhances recovery.
  • These findings suggest that both low and high-intensity resistance training improve cardiovascular recovery in older adults.