Muscle fatigue
Conditions
Interventions
For photobiomodulation intervention (PBM), a cluster (laser + LED) accessory with 4 diodes (1 infrared laser diode with wavelength: 830 nm ± 10% and 3 amber LED diodes with wavelength: 617 nm ± 10%) w
placebo (SG)
PBM in knee extensor (KE_G)
plantar-flexor (PF_G)
knee extensor+plantar-flexor (KE+FP_G). Before the intervention (pre) a fatigue endurance test was applied, which consisted in going up and down one step until exhaustion. The number of repetitions an
0 J for the SG group
and 72 J for the KE+FP_G, since the latter group was stimulated in the two lower limb segments.
E02.594.540
Sponsors
Universidade Estadual do Oeste do Paraná
Universidade Estadual do Oeste do Paraná
Eligibility
Age
18 Years to 28 Years
Inclusion criteria
Inclusion criteria: Volunteers sedentary; healthy; aged between 18 and 18 years; both sexes
Exclusion criteria
Exclusion criteria: Volunteers with neurological and cognitive impairments; cardiorespiratory diseases; the history of orthopedic and traumatological disorders in the lower limbs or trunk
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Outcome: number of repetitions during a functional test It was expected a reduction/limitation in the installation of the muscular fatigue process during a functional test evaluated by the number of repetitions and the time of execution of the test, being that the increase in both the number and time of execution of the test indicates a limitation or even a reversal of the fatigue process, suggesting that the PBM was able to potentiate the energetic metabolism of the muscle making the volunteer more fatigue-resistant. The study protocol used to quantify lower limb fatigue resistance was an adaptation of the Up Down Hop Test. This test consisted of going up and down a 26 cm high step, made of a wooden box with an Ethylene Vinylacetat (EVA) coated surface, sustaining the movement at a constant pace and for the longest time tolerable until exhaustion. Aiming to standardize the test intensity among all participants and minimize the anaerobic routes participation in the exhaustion process, the rhythm adopted by the volunteer was self-selected, but it was based on the perceived exertion corresponding to BORG scale description as "somewhat hard", which is equivalent to the numerical classification between 13 and 14. The first set of trials (pre) was performed before the intervention by PBM. The time spent for the intervention lasted about 15 minutes, and after this time, the evaluation test was reapplied in the second set of trials (immediate post) to verify the immediate PBM effect. Later an interval between 24 to 48 hours after the PBM stimulus application, a new set of trials (late post) was performed to evaluate the PBM effect in the short term. The differences between the groups that find the effects of the intervention were identified by statistical analysis. ;Outcome: time of execution during a functional test It was expected a reduction/limitation in the installation of the muscular fatigue process during a functional test evaluated by the number of repetitions a | — |
Countries
Brazil
Contacts
Public ContactAlberito Carvalho
Outcome results
None listed