Concentración de la hidroxiprolina en la orina de jóvenes tras un programa de estiramientos estáticos y facilitación neuromuscular proprioceptiva

Introduction

Flexibility has been increasingly incorporated into discussions about physical activity and its prescription, creating the need for identifying the form of flexibility training that will increase catabolism of collagen in the locomotor system, thus forcing the conjunctive tissue to adapt and achieve the plastic phase of stretching.

Objective

This study has aimed to compare hydroxyproline (HP) levels among sedentary young people submitted to two types of stretchings: static stretching (SS) and proprioceptive neuromuscular facilitation (PNF).

Material and methods

The sample was randomly divided into PNF group (PG; n=15; age=22±3 years; BMI=24, 12±3.69); static stretching group (SG; n=15; age=23±4 years; BMI= 25±4.33) and control group (CG; n=15; age: 24±4 years; BMI: 23.91±3.09). Static stretching was done by passive straining during six seconds and PNF was done according to the hold-relax method. The intensity of each intervention was controlled with the Scale of Perceived Exertion in the Flexibility – PERFLEX.

Results

The study found satisfactory results: intra-group, in PG (Δ = 3.55 mg/24 h; p = 0.0001) and in SG (Δ= 3.47 mg/24 h; p=0.002) and inter-groups, between PG and CG (Δ = 2.43 mg/24 h; p = 0.018) and between SG and CG (Δ = 2.83 mg/24 h; p = 0.005), both favorable to the training groups. It was possible to infer that both forms of training obtained satisfactory results, increasing the level of HP, which leads to the conclusion that the results of this study do not allow us to state that one of these forms of training is more adequate than the other in regards to the prescription of which one would entail the lowest risk of injuries.