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Effects of Photobiomodulation on High-Intensity Intermittent Anaerobic Performance of Lower Limbs in Brazilian
Rubens B Dos Santos Junior1,2, Bráulio H M Branco3, Leonardo V Andreato4
1Associated Postgraduate Program in Physical Education at the State Universities of Londrina and Maringa, Londrina, Paraná, BRAZIL.
Abstract:
Photobiomodulation (PBM) has ergogenic effects on aerobic and anaerobic efforts and may improve sports performance. As Brazilian jiu-jitsu (BJJ) fighting requires both aerobic and anaerobic metabolism, so PBM may be effective in increasing the physical performance of BJJ athletes. Thus, this study aimed to verify the effects of PBM with different energy doses (6 or 12 J per point) on high-intensity intermittent anaerobic performance in BJJ athletes.
Methods:
Eleven male athletes performed three lower limb Wingate testing sessions. At the beginning of each session, in a randomized, crossover, double-blind fashion, the athletes received PBM with a dose of 6 J (4.5 J/cm2) or 12 J (9.1 J/cm2), or placebo (PLA) at 17 points in each lower limb. In each session, the squat jump (SJ) and three Wingate test series were performed, with a 3-minute interval between series. Heart rate (HR) was collected immediately before, after each Wingate test, and at 1, 3, and 5 minutes after the last test. The rate of perceived exertion (RPE) was reported after each Wingate test. Differences between Wingate tests and treatment sessions were set at p<0.05.
Results:
No differences were observed between treatments in SJ height, Wingate performance, HR, and RPE (p>0.05; for all comparisons). The Wingate test session promoted a reduction in anaerobic capacity in the second and third sets in all conditions, indicating fatigue (p<0.05).
Conclusion:
Treatment with PBM did not produce a dose-dependent ergogenic response in high-intensity intermittent performance in BJJ athletes.
