Each person participated in three tests with an interval of approximately one week between them.

The participant lay on his front on a couch. The examiner applied a plastic cup on a pre-marked trigger point, suctioned it with a mechanical pump and left it for 2 minutes. This was a stationary application with medium suction force. Therapy was performed on both sides. Measurements were taken before and 2 minutes after the therapy.

The trigger points of the upper section of the trapezius on the right and left sides were determined by palpation and were also indicated using a marker. A Wagner FDX 50 Force Gage algometer was applied to the trigger point. The pressure force was increased by 1kg/cm2/s until the patient felt pain, which was the pain pressure threshold (PPT) measured in kg/cm2. The test was performed on both sides. The test was performed twice on each side - before and 2 minutes after the session.

Each examination began in a sitting position with a cervical spine mobility test. The following bone points were marked on the participants' skin using a marker: spinous process of the 7th cervical vertebra, external occipital protuberance, the top of the chin, the jugular notch of the sternum, the mastoid of the temporal bone, and the acromion process of the scapula. Next, a linear measurement of the range of motion was performed using a tape measure to ascertain the distance between the marked points in the initial position and after the active movement for flexion (forward bending), extension (backward bending), lateral bending and rotation to both sides, respectively. The mobility was determined by the difference of the two measurements. The test for each movement (i.e. flexion (forward flexion), extension (backward flexion), lateral flexion and both sides rotation) was performed twice - before and 2 minutes after the session.

Height measured in meters

Weight measured in kilograms