Delayed Onset Muscle Soreness
Conditions
Keywords
microcurent, pain, flexibility
Brief summary
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.
Detailed description
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.
Interventions
DEVICEMicrocurrent Therapy
Several electrodes are placed over the muscles involved in the provocative task. The microcurrent therapy is then started and lasts for one hour.
DEVICESham microcurrent therapy
Several electrodes are placed over the muscles involved in the provocative task. The microcurrent therapy is then started but lasts only for five seconds.
Sponsors
University of Liege
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
18 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
* Asymptomatic subjects
Exclusion criteria
* practice of sports \>3h per week * present pain in the lower limbs * history of thigh muscle injuries * recent injury (last 3 months) of the lower limbs * recent (last 3 months) plyometric exercises or lower limbs strengthening program.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Intensity of pain (Visual analogue scale) | baseline, post-provocative task, post-treatment, 48h follow-up, following days until pain disappears |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Flexibility of quadriceps and hamstrings muscles | baseline, post-provocative task, post-treatment, 48h follow-up | Flexibility of quadriceps muscle was assessed by means of the Prone Quadriceps Flexibility test. Flexibility of hamstrings was assessed by means of the Straight Leg Raising (SLR) test |
| Functional test (Unilateral counter-movement jump) | baseline, post-provocative task, post-treatment, 48h follow-up | Unilateral counter-movement jump |
| Pain sensibility threshold (Determined by using a dolorimeter) | baseline, post-provocative task, post-treatment, 48h follow-up | Determined by using a dolorimeter |
| Isometric strength (Maximal voluntary contraction of knee flexor and extensor muscles) | baseline, post-provocative task, post-treatment, 48h follow-up | Maximal voluntary contraction of knee flexor and extensor muscles |
Countries
Belgium
Outcome results
None listed