Dry needling-related objective signs of the referred pain presence

The study aims to observe dry needling-related distant reactivity of the muscles and autonomic nervous system, taking into account the latent component of the trigger point form. A single assessment will be made of: (i) latent trigger point examination according to Travell& Simons diagnostic criteria and Delphy study recommendation and the measurement of the pressure pain threshold - PPT, using an AlgoMed; (ii) dry needling under infrared camera control according to the Skorupska Protocol combine with the heart rate variability (HRV) and surface electromyography (sEMG); (iii) analysis of negative emotion and pain assessment questionnaires. A group of active athletes aged 18-35 who train in sports characterized by an asymmetric movement structure and healthy volunteers will be studied. All measurements will be performed in university laboratories. The dry needling intervention will be performed by a leading authority in the field of pain diagnosis, certified in dry needling, and who has extensive experience from international training. The intervention will include one session of 10 minutes. The intervention will be carried out by a specialist who is certified and internationally certified in the intervention to be carried out.