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Int J Sports Med 2018; 39(06): 450-455
DOI: 10.1055/a-0577-4280
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© Georg Thieme Verlag KG Stuttgart · New York

Effects of Exercise Intensity on Microvascular Function in Obese Adolescents

Christopher Morrissey
1   University of Avignon, LAPEC, Avignon, France
,
David Montero
2   Institute of Physiology, University of Zurich, Zurich Center for Integrative Human Physiology, Zurich, Switzerland
,
Cecile Raverdy
3   SSR Institut Saint Pierre, Unite de dietetique, Palavas-les-Flots, France
,
Delphine Masson
3   SSR Institut Saint Pierre, Unite de dietetique, Palavas-les-Flots, France
,
Marie-Jo Amiot
4   Aix-Marseille Université, INRA,INSERM, Marseille, UMR “Nutrition, Obesity and Risk of Thrombosis”, Marseille, France
,
Agnes Vinet
5   University of Avignon, LAPEC, Avignon, France
› Author Affiliations
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Publication History



accepted 05 February 2018

Publication Date:
30 April 2018 (online)

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Sports Medicine International Open –recently publishedInt J Sports Med 2018; 39(08): 655-655
DOI: 10.1055/a-0639-0726

Abstract

The optimal exercise modality for the improvement of health-related parameters and microvascular function in obese adolescents is not yet fully understood. Therefore, this study aimed to 1) compare the microvascular phenotype of obese and normal-weight adolescents; and 2) to determine the effects of a lifestyle intervention including three months of moderate continuous training (MCT) or high-intensity interval training (HIIT) on health-related parameters and microvascular function in 29 obese adolescents. Body composition, metabolic profile, aerobic fitness and cutaneous blood flow, measured using laser Doppler flowmetry at rest and during post-occlusive reactive hyperemia, were assessed prior to and following lifestyle intervention. Sixteen normal-weight adolescents were included as reference controls for baseline microvascular parameters. At baseline, obese adolescents had higher peak blood flow, peak vascular conductance and area under the curve for post-occlusive reactive hyperemia than normal-weight adolescents. Conversely, peak blood flow, peak vascular conductance and area under the curve data remained unchanged after MCT and HIIT without intergroup differences. However, the peak/basal blood flow ratio decreased in both MCT and HIIT groups without any interaction between groups due to basal CBF increase (tendency p=0.074). Exercise training, whatever the modality, does not improve peak microcirculatory function.

Key word

exercise training - obesity - microcirculation
 

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