Objective:~To study the efficacy of microcurrent to reduce DOMS (Delayed Onset Muscle Soreness) occuring after an eccentric exercise~Methods:~Experimental protocol~Participants will attend two groups of three sessions (i.e. sessions 1-2-3 and sessions 4-5-6) spaced by 3 months:~session 1 and 4 (performed a few days before the experimental session): session for participants to get familiarized with the test battery.~session 2 and 5: experimental session: the test battery followed by the provocative task, the test battery, the one-hour treatment (real microcurrents at one of the session and placebo microcurrents at the other one) and the test battery again.~session 3 and 6 (performed 2 days later): the test battery.~Before starting session 2, patients will be randomized into the microcurrent group or the placebo microcurrent group. Three months later, participants will change of group.~The Test Battery: it will be conducted by a blind (to the treatment) investigator. It will include knee flexor and extensor flexibility tests, a functional test (unilateral  counter-movement jump ), a pain to measure pain threshold of thigh muscles and an isometric maximal voluntary contraction (MVC) test of knee flexors and extensors.~The Provocative task: 40 isokinetic eccentric contractions of knee flexors and extensors.~The one-hour Treatment: with the participant lying on an examination table, several electrodes were located over the muscles involved in the provocative task. The microcurrent therapy was then started. It was stopped after 5 seconds in the Placebo group and after one hour in the real Microcurrent group. The microcurrents were delivered by the machine B-E-St®.~Follow-up: in addition to the 48hours follow-up (session 3/6), participants will fill in a pain visual analogue scale each day after the session 2/5.
15 participants will be included in the present study. They will attend two groups of three sessions (i.e. sessions 1-2-3 and sessions 4-5-6) spaced by 3 months:~session 1 and 4 (performed a few days before the experimental session): session for participants to get familiarized with the test battery.~session 2 and 5: experimental session (the test battery followed by the provocative task, the test battery, the one-hour treatment and the test battery again).~session 3 and 6 (performed 2 days later): the test battery.~The test battery included flexibility, functional, pressure pain threshold tests.~The provocative task was an isokinetic eccentric task for knee flexors and extensors.~The treatment was either a microcurrent therapy or a placebo microcurrent therapy.