Development and Validation Phase of Diffusion Tensor Imaging and Arterial Spin Labelling at 3 Tesla Using a Long-term Effort Model Applicable to Skeletal Muscle Characterization.

N/ACompletedNCT02018718

University Hospital, Montpellier25 enrolled

Overview

The aim of this study is to demonstrate and quantify the micro architecture and micro vascular changes within skeletal muscles after marathon using 3T MRI (diffusion tensor and arterial spin labeling). Apparent diffusion coefficient, fractional anisotropy and flow parameters will be registered before and after the long-distance run on the lower leg. Axial T1 and axial SPAIR sequences will also be applied at the same time.Stress ox and inflammatory markers will be collected in blood and urine samples and compare with both MRI and Near-infrared spectroscopy (NIRS).

Study Type

INTERVENTIONAL

Allocation

Purpose

OTHER

Masking

NONE

Enrollment

Conditions

Marathoners

Interventions

Magnetic Resonance Imaging (MRI)

Eligibility

Sex: MALEMin age: 25 YearsMax age: 50 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Realizing between 2:10 and 4:30 in the marathon. Exclusion Criteria: * Smoker * Subject with medical treatment or with a treatment interrupted for less than 30 days. * Subject with a osteo-articular, cardiovascular, infectious, lung pathology and/or a metabolic chronic pathology. * MRI Contraindication : Claustrophobic subject ; subject with a intra-cranial vascular clip, with a pacemaker, with a neurostimulator or a cochlear implant ; subject with intraocular metallic foreign bodies.

Outcomes

Primary Outcomes

Fractional Anisotropy (FA) measure

The measures will be made from sequences echoplanar (EAR), and will be extracted by post-treatment software Siemens untitled " Syngo" and "FSL", allowing a distortions correction.

Time frame: at 4 days

Secondary Outcomes

Apparent Diffusion Coefficient (ADC) value