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Related Concept Videos

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Two primary types of muscle contractions are isotonic and isometric, each serving unique functions and involving distinct mechanisms. Both isotonic and isometric contractions are integral to the body's complex system of movement and stability. Isotonic exercises contribute significantly to functional strength and movement, while isometric contractions are crucial for maintaining posture and joint stability.
Isotonic contractions
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Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
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Double-leg isometric exercise training in older men.

Anthony W Baross1, Jonathan D Wiles2, Ian L Swaine2

  • 1Sport and Exercise Science, University of Northampton, Northampton, UK.

Open Access Journal of Sports Medicine
|January 1, 2014
PubMed
Summary

Double-leg isometric training effectively lowers resting systolic and mean arterial blood pressure in older men. This exercise method, previously shown in younger men, offers a new approach for managing blood pressure in aging populations.

Keywords:
electromyographyheart rateresting blood pressure

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Area of Science:

  • Exercise Physiology
  • Cardiovascular Health
  • Gerontology

Background:

  • Double-leg isometric training has shown promise in reducing resting blood pressure in young men.
  • Electromyographic activity (EMG) has been used to regulate exercise intensity during this training.
  • The efficacy of this method in older adults remains to be fully established.

Purpose of the Study:

  • To assess the effectiveness of double-leg isometric training in reducing resting blood pressure in healthy older men (45-60 years).
  • To determine the relationship between heart rate, systolic blood pressure, and peak EMG in this demographic.

Main Methods:

  • An incremental isometric exercise test was conducted on 35 older men to establish physiological relationships.
  • Twenty participants were randomized into a training group or a control group.
  • The training group underwent 8 weeks of double-leg isometric training, three sessions per week, at 85% of peak heart rate.

Main Results:

  • The training group exhibited significant reductions in resting systolic blood pressure (11 ± 8 mmHg) and mean arterial blood pressure (5 ± 7 mmHg).
  • No significant changes in resting blood pressure were observed in the control group.
  • Diastolic blood pressure did not change significantly in either group.

Conclusions:

  • Double-leg isometric training, regulated by electromyographic activity, is effective in reducing resting systolic and mean arterial blood pressure in older men.
  • This training modality presents a viable option for improving cardiovascular health in aging populations.
  • Further research may explore long-term effects and optimal training parameters.