Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 831-840 |
| Number of pages | 10 |
| Journal | Psychophysiology |
| Volume | 50 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2013 Sep |
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Keywords
- Blood flow
- Heart period variability
- Muscle sympathetic nerve activity
- Neurovascular stress
- Vascular conductance
ASJC Scopus subject areas
- Physiology
- Physiology (medical)
- Experimental and Cognitive Psychology
- Neuropsychology and Physiological Psychology
- Arts and Humanities (miscellaneous)
- Developmental and Educational Psychology
Cite this
Augmented limb blood flow during neurovascular stress in physically fit women. / Dishman, Rod K.; Jackson, Erica M.; Nakamura, Yoshio; Ray, Chester A.
In: Psychophysiology, Vol. 50, No. 9, 09.2013, p. 831-840.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Augmented limb blood flow during neurovascular stress in physically fit women
AU - Dishman, Rod K.
AU - Jackson, Erica M.
AU - Nakamura, Yoshio
AU - Ray, Chester A.
PY - 2013/9
Y1 - 2013/9
N2 - 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.
AB - 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.
KW - Blood flow
KW - Heart period variability
KW - Muscle sympathetic nerve activity
KW - Neurovascular stress
KW - Vascular conductance
UR - http://www.scopus.com/inward/record.url?scp=84881612172&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881612172&partnerID=8YFLogxK
U2 - 10.1111/psyp.12074
DO - 10.1111/psyp.12074
M3 - Article
C2 - 23802906
AN - SCOPUS:84881612172
VL - 50
SP - 831
EP - 840
JO - Psychophysiology
JF - Psychophysiology
SN - 0048-5772
IS - 9
ER -