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P1.5 Age-Based Comparison of the Acute Effect of Maximal Aerobic Running Exercise on Arterial Stiffness in Children and Adults

Abstract

Purpose

Compare the effects of a bout of maximal aerobic running exercise(MARE) on local, central, peripheral and whole body arterial stiffness in children and adults.

Methods

Thirty-five children(girls:49%) aged 5(n = 18) and 9(n = 17) years-old and 45 adults (women: 53%) aged 19 (n = 21) and 30 (n = 24) years-old performed a single bout of MARE on a treadmill. Local (LO) pulse wave velocity (PWV) was performed on the carotid artery with technology based on radio frequency signals. Central (carotid-femoral; CF), peripheral (carotid-radial; CR) and whole body (carotid-distal posterial-tibial; CD) PWV(m/s) were obtained using applanation tonometry before and 10min after MARE. Univariate analysis of variance were used to detect age-group differences between pre-post changes (%) with exercise (p<0.05), adjusted for sex, mean brachial arterial pressure (bMAP) and %body fat by DXA.

Results

Children had lower baseline LO (5: 3.11; 9: 4.37), CF (5: 3.50; 9: 6.11), and CD (5: 4.88; 9: 7.11) PWV than adults. Children at the age of 9 had the highest changes in CF (27.17%) and CR (18.02%) PWV with exercise and changes were significantly different from those at the age of 30 (CF: 3.91%; CR: -4.95%). PWV of 5 year-old children decreased after exercise in LO (-8.30%) and CD (-4.06%) and the changes were significantly different from those of 20 year-old subjects (LO: 13.56% and CD: -6.55%). Changes in LO, CF, and CD PWV with exercise were not significantly different between either adult’s groups or children’s groups.

Conclusions

Children had lower PWV than adults at rest. MARE elicited different site dependent arterial responses between children and adults that could not be explained by bMAP and sex.

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This is an open access article distributed under the CC BY-NC license http://creativecommons.org/licenses/by/4.0/.

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Melo, X., Fernhall, B., Santos, D. et al. P1.5 Age-Based Comparison of the Acute Effect of Maximal Aerobic Running Exercise on Arterial Stiffness in Children and Adults. Artery Res 8, 130 (2014). https://doi.org/10.1016/j.artres.2014.09.086

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  • DOI: https://doi.org/10.1016/j.artres.2014.09.086