Photobiomodulation by Led Does Not Alter Muscle Recovery Indicators and Presents Similar Outcomes to Cold-Water Immersion and Active Recovery

Author(s)

Malta, Elvis de Souza ^[1] ; de Lira, Fabio Santos ^[2] ; Machado, Fabiana Andrade ^[3] ; Zago, Anderson Saranz ^[4] ; do Amaral, Sandra Lia ^[4] ; Zagatto, Alessandro Moura ^{[1, 4]}

Affiliation

^[1] Sao Paulo State Univ, Dept Phys Educ, Lab Physiol & Sport Performance, Sch Sci, Bauru - Brazil

^[2] Sao Paulo State Univ, Sch Sci & Technol, Dept Phys Educ, Presidente Prudente - Brazil

^[3] Univ Estadual Maringa, Dept Phys Educ, Grp Studies & Res Exercise Physiol Appl Humans, Maringa, Parana - Brazil

^[4] Sao Paulo State Univ, Dept Phys Educ, Sch Sci, Bauru - Brazil

• Document type: Journal article
• Source: FRONTIERS IN PHYSIOLOGY; v. 9, JAN 14 2019.
• Web of Science Citations: 0

Abstract

Purpose: The aim of the present study was to investigate the effectiveness of photobiomodulation therapy (PBMT) on muscle recovery based on inflammation (interleukin-10 {[}IL-10]; tumor necrosis factor-alpha {[}TNF alpha]), muscle damage markers (creatine kinase {[}CK]; lactate dehydrogenase {[}LDH]), delay onset muscle soreness (DOMS), and countermovement jump performance (CMJ) after two sprint interval training (SIT) sessions compared with a placebo condition (part-I), as well as to compare the effectiveness of PBMT with active recovery (AR) and cold-water immersion (CWI) (part-II). Methods: Part-I was conducted as a double-blind, randomized and placebo-controlled study and part-II as a parallel-group study. Thirty-six men participated in the studies (12 participants in part-I and 36 participants in part-II). Volunteers performed two SITs interspaced by 24-h (SIT1 and SIT2) to mimic the effect of accumulating 2 consecutive days of SIT. In part-I, only after SIT2, PBMT {[}Total energy: 600J (300J per leg in 5 spots); wavelength: 660-850 nm] or placebo interventions were performed, while in part-II PBMT (part-I data), AR (15-min; 50% of the maximal aerobic power), or CWI (10-min; 10 degrees C) were carried out, also after SIT2. Blood samples were collected before (i.e., baseline), and 0.5, 1, 24, 48, and 72-h after SIT2, while CMJ and DOMS were measured before, 24, 48, and 72-h after SIT2. Results: In part-I, there were no interactions between PBMT and placebo conditions for any blood markers (P >= 0.313), DOMS (P = 0.052), and CMJ (P = 0.295). However, an effect of time was found with increases in LDH, CK, and IL-10 (P <= 0.043) as well as a decrease in DOMS at 72-h compared with 24-h (P = 0.012). In part-II, there were no interactions between the PBMT, AR, and CWI groups for any markers at the same moments (P >= 0.189) and for the peak and integral values (P >= 0.193), for DOMS (P = 0.314) and CMJ (P = 0.264). However, an effect of time was found with an increase in CK and IL-10 (P = 0.003), while DOMS decreased at 48 and 72-h compared with 24-h (P = 0.001). Conclusion: In summary, PBMT had no effect on inflammation, muscle damage, CMJ performance, or DOMS after two consecutive sprint interval training sessions compared to placebo, CWI, and AR strategies. (AU)

• FAPESP's process: 15/05012-2 - Effect of led therapy on the muscular recovery after high-intensity interval training session
• Grantee: Elvis de Souza Malta
• Support Opportunities: Scholarships in Brazil - Master