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Related Experiment Videos

Forearm training reduces the exercise pressor reflex during ischemic rhythmic handgrip

S Mostoufi-Moab1, E J Widmaier, J A Cornett

  • 1Milton S. Hershey Medical Center, Pennsylvania State University, Hershey 17033, USA.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|February 6, 1998
PubMed
Summary

Four weeks of forearm training improved exercise endurance and reduced blood pressure and lactate buildup during ischemic exercise. This training enhances the body's response to strenuous activity.

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Area of Science:

  • Exercise Physiology
  • Cardiovascular Physiology
  • Metabolic Physiology

Background:

  • Unilateral resistance training can induce adaptations in the trained limb.
  • The effects of forearm-specific training on cardiovascular and metabolic responses during ischemic exercise are not fully understood.

Purpose of the Study:

  • To investigate the impact of unilateral, nondominant forearm training on blood pressure and forearm metabolites during ischemic rhythmic handgrip exercise.
  • To determine if training alters the pressor response threshold and metabolic accumulation during forearm exercise under pressure.

Main Methods:

  • Ten subjects underwent 4 weeks of unilateral, nondominant forearm training.
  • Forearm exercise involved rhythmic handgrip contractions within a pressurized tank to induce ischemia.
Keywords:
Non-programmatic

Related Experiment Videos

  • Blood pressure, venous lactate, pH, and oxygen saturation were measured before and after training under various pressure conditions.

    • Main Results:

    • Training significantly increased endurance time (102%) in the trained forearm.
    • The positive-pressure threshold for eliciting a pressor response was elevated post-training.
    • Mean arterial pressure, venous lactate, and pH changes were attenuated post-training during ischemic exercise at +50 mmHg.

    Conclusions:

    • Unilateral forearm training enhances exercise capacity and improves cardiovascular and metabolic regulation during ischemic forearm exercise.
    • Training increases the tolerance to exercise-induced ischemia by raising the pressor response threshold and reducing metabolite accumulation.
    • These findings suggest that localized training can lead to systemic physiological adaptations beneficial for exercise performance and potentially cardiovascular health.