Augmented limb blood flow during neurovascular stress in physically fit women

Rod K. Dishman, Erica M. Jackson, Yoshio Nakamura, Chester A. Ray

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The study examined whether cardiorespiratory fitness modifies cardiovascular responses by normotensive men and women during the Stroop color-word interference test. Independent of age and an estimate of body fatness, fitness level was positively related (R2=.39 and .51) to increases in limb blood flow and vascular conductance, coherent with cardiac-vagal withdrawal and a decrease in heart period, among women but not men. Fitness was unrelated to changes in systolic and diastolic blood pressures and muscle sympathetic nerve activity. The augmented hemodynamic responses among fitter women were not consistent with passive vasodilation via withdrawal of sympathetic neural tone. The results encourage further gender comparisons testing whether fitness augments limb blood flow during mental stress by neurohumoral and flow-mediated vasodilatory mechanisms or by increased cardiac output.

本文言語English
ページ(範囲)831-840
ページ数10
ジャーナルPsychophysiology
50
9
DOI
出版ステータスPublished - 2013 9

ASJC Scopus subject areas

  • 神経科学(全般)
  • 神経心理学および生理心理学
  • 実験心理学および認知心理学
  • 神経学
  • 内分泌系および自律システム
  • 発達神経科学
  • 認知神経科学
  • 生物学的精神医学

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