Low Level Laser Therapy, Performance, Photobiomodulation, Sport
Conditions
Keywords
Physical Therapy, Photobiomodulation, Athletic Performance, Hypoxia
Brief summary
The photobiomodulation (PBM) shows positive results in muscle performance, fatigue reduction, management of blood lactate production, analgesia and in the increase of VO2 maximal, favoring the increase of ATP production and thus the energy metabolism. The association of PBM applied before high-intensity treadmill training shows physiological improvements both in normoxic (Nor) and hypoxic (Hip) conditions. Anaerobic capacity (AC) is the maximum amount of ATP that can be resynthesized by anaerobic metabolism and is an important predictor of high-intensity exercise since an athlete's ability to perform efforts to increase maximal oxygen consumption (VO2max) depends on AL. In view of the above information the main objective of the present research project will be to investigate the effects of PBM on AC under normoxic and hypoxic conditions in amateur runners. To test the effects of exercise training on anaerobic capacity under normoxic and hypoxic conditions, 7 individuals will be randomly submitted to four maximal efforts to exhaustion with intensity corresponding to 110% of VO2max in Hip, Nor, Hip+Ebio and Nor+Ebio conditions. These efforts will be used to estimate the AC, that is, the maximum accumulated deficit of alternative oxygen (MAODRED), from the sum of the energy contribution of the anaerobic and lactic metabolisms.
Interventions
DEVICEPhotobiomodulation therapy
A previous application of photobiomodulation therapy was offered or not, for possible performance enhancement.
Sponsors
University of Sao Paulo
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
18 Years to 29 Years
Healthy volunteers
Yes
Inclusion criteria
* healthy individuals * VO2 maximal equal to or greater than 34 ml/kg.min * capacity for physical activity according to the PAR-Q questionnaire
Exclusion criteria
* musculoskeletal injury in the last three months; * cardiovascular diseases; * use of anabolic, anti-inflammatory and analgesic drugs 72 hours before the evaluations; * use of alcohol and illicit drugs during the collection period;
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Analysis of excess oxygen consumption observed after exercise and blood lactate | 1 year | To investigate the effects of photobiomodulation on anaerobic capacity in normoxia and hypoxia conditions in amateur runners |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Analysis of V02 max by a single supramaximal effort performed to exhaustion | 1 year | To determine the alactic and lactic anaerobic and lactic anaerobic participation during exhaustive effort performed at 120% of VO2max in normoxia, hypoxia and with intervention of photobiomodulation |
Countries
Brazil
Outcome results
None listed