Laser Therapy on Neuromuscular Performance

Universidade Federal do Rio Grande do Norte

Status: Completed

Conditions: Fatigue

Treatments: Device: Placebo Laser; Device: Low Level Laser Therapy

Study type: Interventional

Funder types: Other

Identifiers

NCT02813395

RMV2016

Details and patient eligibility

About

Objective: Investigating the immediate effects of Low Level Laser Therapy (LLLT) on neuromuscular performance in healthy subjects after an induced muscle fatigue protocol. Methods: Eighty volunteers of both genders aged between 18 and 28 years underwent a preliminary evaluation using surface electromyography and isokinetic dynamometer of the flexor muscles of the elbow. The subjects were randomly allocated into 4 groups: G1 was control group; G2 placebo; G3 laser applied before fatigue protocol; and G4 immediately after. Muscular fatigue protocol consisted of 30 maximal concentric isokinetic contractions at 120°/s of the elbow flexor muscles. An 808 nm equipment was used for applying laser therapy, with a power of 100 mW and total energy of 20 J. Volunteers were reassessed after interventions.

Enrollment: 80 patients

Sex: All

Ages: 18 to 28 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Being between 18-28 years of age, having no pain in the shoulder area, elbow or hand, and not having suffered any to injury to the assessed upper limb in the last six months.

Exclusion criteria

• Presenting pain that prevented the completion of the evaluation, subjects whose data were improperly recorded or if the volunteer withdrew from the study.

Trial design

80 participants in 4 patient groups, including a placebo group

Control group

No Intervention group

Description:

Volunteers remained at rest before and after the fatigue protocol.

Placebo group

Placebo Comparator group

Description:

Volunteers were subjected to laser application simulation for approximately four minutes with a second pen of the laser device, which was disconnected and did not effectively irradiate energy.

Treatment:

Device: Placebo Laser

Laser before

Experimental group

Description:

Volunteers received effective application of laser before fatigue protocol.

Treatment:

Device: Low Level Laser Therapy

Laser after

Experimental group

Description:

Volunteers received effective application of laser after fatigue protocol.

Treatment:

Device: Low Level Laser Therapy