Análise termográfica do dano muscular induzido de diferentes magnitudes nos flexores de cotovelo em indivíduos fisicamente ativos

Abstract

Introduction: Exercise-induced muscle damage (EIMD) can arise with the usual practice of physical exercise, and its magnitude is directly related to the type, intensity, mode or duration of the exercise. The evaluation of EIMD by indirect methods has been increasingly used and recently the skin temperature has been used for this purpose, however the physiological behavior of the temperature in front of different EIMD is not known and how it is related to the indirect markers of the EIMD. Objective: To evaluate the superficial temperature of the skin, after induced muscle damage of different magnitudes, in the elbow flexors and secondarily investigate if the temperature is related to the main indirect markers of muscle damage. Methods: Thirty healthy men (23.4 ± 2.6 years), active, randomly assigned to the low muscle damage group (GBD) and high muscle damage group (GAD). They were evaluated for skin temperature, late muscle pain, pressure pain threshold, range of motion (ROM), creatine kinase (CK) and peak isometric torque (CIVM). Evaluations occurred 48 hours before, immediately before and after, in addition to 30 minutes, 24, 48 and 72 hours after EIMD. GBD performed 10 maximal isokinetic actions of elbow flexors at the angular velocity of 60 ° / s and GAD performed 30 repetitions. Results: There was a temperature increase at the time immediately after the stimulus in both groups (P <0.05; f = 1.44), but recovering / normalizing after 30 minutes and without difference between them (P> 0.05). There was no significant correlation of temperature with the main indirect markers of muscle damage (Peak Torque, Pain and CK) (P> 0.05). Conclusion: The skin surface temperature increases only at the moment immediately after the stimulus, with no differences between magnitudes of muscle damage and no relation with the main indirect markers of muscle damage. Therefore, skin surface temperature can not be considered an indirect marker for assessing exercise-induced muscle damage in active adults.