Muscle fatigue, Men
Conditions
Interventions
Crossover study: 30 healthy young men with no complaints of pain or shoulder injury will receive the three types of intervention listed below with a seven day interval between them. The order of the i
II) Placebo Group: 30 healthy young men without complaints of pain or shoulder injury will receive placebo photobiomodulation in the anterior serratus muscle, bilaterally, after fatigue protocol of th
III) Control group - untreated: 30 healthy young men with no complaints of pain or shoulder injury will not receive Low intensity laser therapy after the fatigue protocol for the anterior serratus mus
Device
Procedure/surgery
E02.594
Sponsors
Departamento de Ciências do Movimento Humano
Universidade Federal de São Paulo Campus Baixada Santista
Eligibility
Sex/Gender
Male
Age
20 Years to 30 Years
Inclusion criteria
Inclusion criteria: Age between 20 and 30 years; full and non-painful active range of motion of the shoulder; elbow and wrist joints; Body mass index (BMI) less than or equal to 27; Considered not very active by the International Physical Activity Questionnaire (IPAQ); have not been in training for at least three months.
Exclusion criteria
Exclusion criteria: Musculoskeletal dysfunction in shoulder, wrist and hand elbow; Weakness of the anterior serratus muscle; winged scapula; history of trauma or previous surgery in the upper extremities; subluxation of the glenohumeral joint; rheumatic, degenerative or neurological disease; patients with diabetes mellitus and fibromyalgia; patients with uncontrolled hypertension; regular intake of drugs and dietary supplements; Fitzpatrick Type Scale Type V and Type VI classification and physical training
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Reduction of anterior serratus fatigue after the use of active photobiomodulation, verified through the Median Frequency (Fmed) of the electromyographic signal, collected during the fatigue task. Fatigue is seen from a frequency decline of more than 8%. Reduction in the muscle synergism of shoulder muscles due to the reduction of anterior serratus fatigue, verified through electromyography, namely the Root Mean Square (RMS) of the activation values of the shoulder muscles. The assessment of muscle activation is done before and after the task of fatigue. The change in synergism is evidenced by a change in the activation rates between the pairs of synergistic muscles, when the moments before and after fatigue were compared. | — |
Secondary
| Measure | Time frame |
|---|---|
| Increase of the volunteer's time spent in the task of fatigue when the serratus is previously i irradiated with active photobiomodulation, verified through the time, in seconds, that the volunteer will take to leave the task. | — |
Countries
Brazil
Contacts
Public ContactHelga;Kamila Tucci;Vieira
Universidade Federal de São Paulo Campus Baixada Santista;Universidade Federal de São Paulo Campus Baixada Santista
Outcome results
None listed