Photobiomodulation Therapy Combined With Static Magnetic Field on the Subsequent Performance

University of Nove de Julho

Status: Completed

Conditions: Skeletal Muscle Performance

Treatments: Device: Placebo PBMT-sMF; Device: Active PBMT-sMF

Study type: Interventional

Funder types: Other

Identifiers

NCT04934709

665332

Details and patient eligibility

About

There is evidence about the effects of photobiomodulation therapy (PBMT) alone and combined with static magnetic field (PBMT-sMF) on skeletal muscle fatigue, physical performance and post-exercise recovery in different types of exercise protocols and sports activity. However, it is unknown the effects of PBMT-sMF to improve the subsequent performance after a first set of exercise. Therefore, the aim of this study was to investigate the effects of PBMT-sMF, applied between two sets of exercises, on the subsequent physical performance.

Full description

A randomized, crossover, triple-blinded (assessors, therapist and volunteers), placebo-controlled trial was carried out. Healthy non-athletes' male volunteers were randomized and treated with a single application of PBMT-sMF and placebo between two sets of an exercise protocol performed on isokinetic dynamometer.

The order of interventions was randomized.

The primary outcome was fatigue index, measured by isokinetic dynamometer during the exercise protocol. The secondary outcomes were total work and peak torque measured by isokinetic dynamometer during the exercise protocol; and blood lactate, measured by blood samples collected before, 3 minutes after the first set of the exercise protocol, 3 minutes after the application of the intervention and 3 minutes after the second set of the exercise protocol.

Statistical analysis:

The findings were tested for normality using the Kolmogorov-Smirnov test and were determined to have a normal distribution. Data were expressed as the mean and standard deviation, and a two-way repeated measures ANOVA was performed to test between-group differences at each timepoint (treatment effects), mean difference (MD) and 95% confidence intervals (CI), followed by the Bonferroni post hoc test. The significance level was set at p < 0.05.

Enrollment: 12 patients

Sex: Male

Ages: 18 to 35 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion criteria:

• Male healthy volunteers;
• Non-athletes or those who practiced physical activity up to once a week;
• Aged 18-35 years.

Exclusion criteria

• History of musculoskeletal injuries in the hip and knee regions in the two months prior to the study;
• Use of pharmacological agents and nutritional supplements;
• Chronic joint disease in the non-dominant lower limb.

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Quadruple Blind

---

12 participants in 2 patient groups, including a placebo group

PBMT-sMF

Experimental group

Description:

Volunteers underwent intervention (active PBMT-sMF) in the non-dominant lower limb. A single application was performed at each phase of the trial, between the first and second set of the exercise protocol.

Treatment:

Device: Active PBMT-sMF

Placebo

Placebo Comparator group

Description:

Volunteers underwent intervention (placebo PBMT-sMF) in the non-dominant lower limb. A single application was performed at each phase of the trial, between the first and second set of the exercise protocol.

Treatment:

Device: Placebo PBMT-sMF