The experimental group will participate in a music-based program designed to improve attention, mental alertness, readiness for action and to reduce kinesiophobia. The music track that will be used for this group of participants will include binaural beats and guidance. Participants will receive the music program for 4 weeks / 5 sessions per week, for a total of 20 sessions of 15 minutes each

The Placebo group will participate in a music-based program designed to improve attention, mental alertness, readiness for action and to reduce kinesiophobia. The music track provided to this group will be the same as in the other two groups but it will only include guidance and not binaural beats. Participants will receive the music program for 4 weeks / 5 sessions per week, for a total of 20 sessions of 15 minutes each.

Participants allocated to the control group will undergo a structured music-based intervention designed to enhance attentional focus, mental alertness, and action readiness, while concurrently aiming to reduce kinesiophobia. The music track used for this group will be the same as in the other two groups but it will include neither binaural beats nor guidance. The intervention will be administered for 4 weeks / 5 sessions per week, for a total of 20 sessions of 15 minutes each.

The music track will provide auditory stimulation using binaural beats at low beta frequencies (12-15 Hz) accompanied by guided instructions over a low-tempo musical background with a gradual increase in rhythm toward the end of the track.

Sympathetic Skin Response (SSR) test will be used to assess the changes of the Autonomic Nervous System (ANS). SSR will be assessed by calculating the latency and the amplitude. The Latency was measured from the onset of the stimulus artefact to the first deflection from baseline (in seconds) and amplitude was measured peak-to-peak (from negative to positive peak, in millivolts). The Sympathetic Skin Response will be carried out using Electromyography (EMG). Electrical stimuli were delivered to the right wrist at an intensity of 75 mA and a duration of 0.1 ms. The band-pass filter was set between 0.5 and 2000 Hz. Five stimuli were administered unpredictably at random intervals of at least 30 seconds. The shortest latency and the highest amplitude response values among the five responses were used for statistical analysis. Parameters included in the analysis were: SSR upper limb latency, SSR upper limb amplitude, SSR lower limb latency, and SSR lower limb amplitude.

Tampa Scale of Kinesiophobia questionnaire (TSK-17) will be used translated to Greek. It has been tested for its reliability and validity. Scale from 17 to 68. 17 means the person experiences low level of kinesiophobia and 68 means the person experiences high level of kinesiophobia.

An incremental exercise test will be used to assess the aerobic capacity. This method is commonly used to evaluate maximal oxygen uptake (VO₂max) and involves a protocol of progressively increasing exercise intensity until volitional exhaustion. Participants will run on a motorized treadmill set at a constant incline of 0%. Running speed will begin at approximately 8-9 km/h and will increase by 1 km/h at the end of each 1-minute stage. Respiratory variables will be continuously measured on a breath-by-breath basis using a gas analysis system. The test will be terminated when participants reach volitional exhaustion, when oxygen uptake values plateau or decrease despite further increases in workload and ventilation or when the respiratory exchange ratio exceeds 1.10. Total test duration is expected to be approximately 8-12 minutes.

Sport competition anxiety questionnaire (SCAT) will be used translated to Greek. It has been tested for its reliability and validity. Scale from 10 to 30. Scores under 17 show low level of competition anxiety. Scores over 24 show high level of competition anxiety.