Clinical trial NCT03566186: Effects of Phototherapy Associated With Sprint and Squat Training on Cardiac Autonomic Modulation
Official title: Effects of Phototherapy Associated With Sprint and Squat Training on Cardiac Autonomic Modulation: Randomized, Placebo-controlled Trial
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Phototherapy
Autonomic Nervous System
Training
Keywords: Photobiomodulation
Autonomic nervous system
Heart rate variability
Recovery of function
Super-pulsed laser
Led light
Lead sponsor: Paulista University
Sponsor class: OTHER
First posted: 2018-06-25
Enrollment: 39
Sex: MALE
Minimum age (years): 18
Maximum age (years): 30
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: OTHER

Brief summary: Recent studies have shown positive results in the application of phototherapy for the improvement of performance and acceleration of the healing process of the body homeostasis. Among the methods used to assess the recovery post-exercise has cardiac autonomic modulation assessed by heart rate variability (HRV), a tool widely used in sports to evaluate medium global behavior of the autonomic nervous system. Objective: analyze and compare the effect of a special protocol of phototherapy using different light sources interacting with a combined training with an autonomic modulation of heart rate in different moments (baseline; tracking daily; recovery post-exercise and after training). Method: 45 male participants will be allocated from a stratified randomization into three groups: control (n=15), placebo (n=15) and group special protocol of phototherapy (n=15). Participants will perform a combined training of sprints and squats twice a week for twelve weeks divided into two phases. The application of phototherapy and placebo was administered in phase 2, after sprints and just before the squat. The phototherapy was used combine different light sources and wavelength (red and infrared). Was analyze HRV in five moments: baseline; traking daily; week target of phase I and II; after training. The weeks target consist of training sessions with greater energy expenditure (largest intensity). The sphericity of the data was tested by Mauchly test. In case of violation of the sphericity assumption, the correction of Greenhouse-Geisser was performed. The data was analyzed using analysis of variance for repeated measures (Bonferroni post-test), which provide information on the effects of time, group and interaction. All statistical analyzes assume the significance level of 5%.


Eligibility criteria: Inclusion Criteria:

* Healthy patient (self-report);
* Male gender;

Exclusion Criteria:

* History of cancer;
* Smokers or alcoholics;
* Use drugs that influenced cardiac autonomic activity;
* Cardiovascular, metabolic or endocrine diseases;
* Occurrence of musculoskeletal injury during the study.

Primary outcomes:
measure: Effects of phototherapy on adaptation and change of cardiac Autonomic modulation.
timeFrame: Baseline (captation of hear rate variability for 20 minutes) before 6 weeks (captation of hear rate variability for 20 minutes) and before 12 weeks (captation of hear rate variability for 20 minutes)
Secondary outcomes:
measure: Effects of phototherapy on recovery of cardiac Autonomic modulation.
timeFrame: During training sessions with higher energetic spending leaving for the last two weeks, composed of higher intensity - (captation of hear rate variability for 1 hour on phase 1 and phase 2).
measure: Effects of phototherapy on tracking daily of cardiac autonomic modulation.
timeFrame: daily, after exercise and before exercise (captation of hear rate variability for 7 minutes)
Other outcomes:
Locations:
city: Presidente Prudente
country: Brazil
facility: Franciele Marques Vanderlei
state: SP
Study officials:
References: