Relation of femoral diameter, shear rate, and dilatory response to knee extensor exercise

Joaquin Gonzales; Julie A. Midelar; Beth A. Parker; David N. Proctor

doi:10.1249/MSS.0b013e3181dd1c99

Relation of femoral diameter, shear rate, and dilatory response to knee extensor exercise

Joaquin Gonzales, Julie A. Midelar, Beth A. Parker, David N. Proctor

Kinesiology and Sport Management

Research output: Contribution to journal › Article › peer-review

Abstract

INTRODUCTION: Younger women typically exhibit marked dilation of the common femoral artery (CFA) during knee extensor exercise; this is in apparent contrast to subject groups with larger (men) and/or older (older women) vessels, which on average display much smaller exerciseinduced increases in CFA diameter. To gain additional insight into this variation, the present study closely examined within- and between-group relationships between CFA diameter, shear rate, and the magnitude of exercise-induced CFA dilation. METHODS: Healthy women (15 younger, 18 older) and men (15 younger, 13 older) performed graded single-leg knee extensor exercise while CFA diameter and blood velocity were measured using Doppler ultrasound. RESULTS: Resting CFA diameter was smaller (P < 0.05) in women (younger: 0.71 +/- 0.02 cm; older: 0.72 +/- 0.02 cm) as compared to men (younger: 0.84 +/- 0.01 cm; older: 0.97 +/- 0.03 cm). Resting CFA diameter was inversely associated with peak shear rate (combined groups,

Original language	English
Pages (from-to)	1875-1875
Journal	Medicine & Science in Sports & Exercise
DOIs	https://doi.org/10.1249/MSS.0b013e3181dd1c99
State	Published - Oct 20 2010

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title = "Relation of femoral diameter, shear rate, and dilatory response to knee extensor exercise",

abstract = "INTRODUCTION: Younger women typically exhibit marked dilation of the common femoral artery (CFA) during knee extensor exercise; this is in apparent contrast to subject groups with larger (men) and/or older (older women) vessels, which on average display much smaller exerciseinduced increases in CFA diameter. To gain additional insight into this variation, the present study closely examined within- and between-group relationships between CFA diameter, shear rate, and the magnitude of exercise-induced CFA dilation. METHODS: Healthy women (15 younger, 18 older) and men (15 younger, 13 older) performed graded single-leg knee extensor exercise while CFA diameter and blood velocity were measured using Doppler ultrasound. RESULTS: Resting CFA diameter was smaller (P < 0.05) in women (younger: 0.71 +/- 0.02 cm; older: 0.72 +/- 0.02 cm) as compared to men (younger: 0.84 +/- 0.01 cm; older: 0.97 +/- 0.03 cm). Resting CFA diameter was inversely associated with peak shear rate (combined groups,",

author = "Joaquin Gonzales and Midelar, {Julie A.} and Parker, {Beth A.} and Proctor, {David N.}",

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pages = "1875--1875",

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T1 - Relation of femoral diameter, shear rate, and dilatory response to knee extensor exercise

AU - Gonzales, Joaquin

AU - Midelar, Julie A.

AU - Parker, Beth A.

AU - Proctor, David N.

PY - 2010/10/20

Y1 - 2010/10/20

N2 - INTRODUCTION: Younger women typically exhibit marked dilation of the common femoral artery (CFA) during knee extensor exercise; this is in apparent contrast to subject groups with larger (men) and/or older (older women) vessels, which on average display much smaller exerciseinduced increases in CFA diameter. To gain additional insight into this variation, the present study closely examined within- and between-group relationships between CFA diameter, shear rate, and the magnitude of exercise-induced CFA dilation. METHODS: Healthy women (15 younger, 18 older) and men (15 younger, 13 older) performed graded single-leg knee extensor exercise while CFA diameter and blood velocity were measured using Doppler ultrasound. RESULTS: Resting CFA diameter was smaller (P < 0.05) in women (younger: 0.71 +/- 0.02 cm; older: 0.72 +/- 0.02 cm) as compared to men (younger: 0.84 +/- 0.01 cm; older: 0.97 +/- 0.03 cm). Resting CFA diameter was inversely associated with peak shear rate (combined groups,

AB - INTRODUCTION: Younger women typically exhibit marked dilation of the common femoral artery (CFA) during knee extensor exercise; this is in apparent contrast to subject groups with larger (men) and/or older (older women) vessels, which on average display much smaller exerciseinduced increases in CFA diameter. To gain additional insight into this variation, the present study closely examined within- and between-group relationships between CFA diameter, shear rate, and the magnitude of exercise-induced CFA dilation. METHODS: Healthy women (15 younger, 18 older) and men (15 younger, 13 older) performed graded single-leg knee extensor exercise while CFA diameter and blood velocity were measured using Doppler ultrasound. RESULTS: Resting CFA diameter was smaller (P < 0.05) in women (younger: 0.71 +/- 0.02 cm; older: 0.72 +/- 0.02 cm) as compared to men (younger: 0.84 +/- 0.01 cm; older: 0.97 +/- 0.03 cm). Resting CFA diameter was inversely associated with peak shear rate (combined groups,

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JO - Medicine & Science in Sports & Exercise

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