Passive triceps surae stretch inhibits vasoconstriction in the nonexercised limb during posthandgrip muscle ischemia

Ken Tokizawa, Masaki Mizuno, Yoshio Nakamura, Isao Muraoka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We investigated whether selective muscle mechanoreceptor activation in the lower limb opposes arm muscle metaboreceptor activation-mediated limb vasoconstriction. Seven subjects completed two trials: one control trial and one stretch trial. Both trials included 2 min of handgrip and 2 min of posthandgrip exercise muscle ischemia (PEMI). In the stretch trial, a 2-min sustained triceps surae stretch, by brief passive dorsiflexion of the right foot, was performed simultaneously during PEMI. Mean arterial pressure, heart rate, and forearm blood flow (FBF) in the nonexercised arm and forearm vascular conductance (FVC) in the nonexercised arm were measured. During PEMI in the control trial, mean arterial pressure was significantly greater and FBF and FVC were significantly lower than baseline values (P < 0.05 for each). In contrast, FBF and FVC during PEMI in the stretch trial exhibited different responses than in the control trial. FBF and FVC were significantly greater in the stretch trial than in the control trial (FBF, 5.5 ± 0.4 vs. 3.8 ± 0.4 ml·100 ml-1·min-1; FVC, 0.048 ± 0.004 vs. 0.033 ± 0.003 unit, respectively; P < 0.05). These results indicate that passive triceps surae stretch can inhibit vasoconstriction in the nonexercised forearm mediated via muscle metaboreceptor activation in the exercised arm.

Original languageEnglish
Pages (from-to)1681-1685
Number of pages5
JournalJournal of Applied Physiology
Volume97
Issue number5
DOIs
Publication statusPublished - 2004 Nov

Fingerprint

Vasoconstriction
Forearm
Ischemia
Extremities
Muscles
Blood Vessels
Arm
Arterial Pressure
Mechanoreceptors
Foot
Lower Extremity
Heart Rate

Keywords

  • Blood flow
  • Muscle mechanoreceptor
  • Muscle metaboreceptor

ASJC Scopus subject areas

  • Physiology
  • Endocrinology
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Passive triceps surae stretch inhibits vasoconstriction in the nonexercised limb during posthandgrip muscle ischemia. / Tokizawa, Ken; Mizuno, Masaki; Nakamura, Yoshio; Muraoka, Isao.

In: Journal of Applied Physiology, Vol. 97, No. 5, 11.2004, p. 1681-1685.

Research output: Contribution to journalArticle

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