It consists of 1 session. Each osteopathic session is based on a structural evaluation and treatment tailored to the participant-specific complains

Osteopathic Sham treatment was applied using manual contact on specific bony surfaces using very light pressure. The practitioner was counting the seconds up to 1 minute between the areas where to apply the light touch without any intention to treat or diagnose.

Participants will be on a waiting list, and meanwhile, they are advised to deal with their pain in the way they would, but without using any sort of Manual Therapy.

A consultation including case history taking, physical assessment, osteopathic manual treatment, exercise prescription, and postural advice.

Surface electromyography (sEMG) was used to retrieve the electrical activity of the Upper Trapezius (UT) muscles. The electrical signal was normalized through the maximum isometric voluntary contraction (MIVC) and expressed as a percentage of MIVC. sEMG data will be collect at 4 different moments of the 15 minutes typing task. Electrodes placement, data collection and processing was performed according to SENIAM standards.

A Digital Pressure Algometer (Wagner FORCE ONE FDIX 50', Wagner Instruments, Greenwich, CT, USA) was used on the trapezius muscle, superior fibers, both sides. The exact location on the muscles was defined as 2cm above the medial electrode, on the muscle fiber direction. During the collection of the PPT, the participant stopped the typing task and rested arms on the legs. The algometer pointer was placed perpendicular to the points marked for evaluation, and then, vertical compression force was applied. That force was increased continuously at a rate of 1 kg/cm2 until pain was reported. Measurements were made in the seating position, immediately before and after the writing task. To ensure the maximum reading was obtained, the C-Peak option of the device was enabled. Participants were instructed of the procedures in advance, and simulation on their forearm was performed before the data collection.

This numeric scale, is used on its 11-point version. NRS represents a simple, 1-dimensional measuring instrument for the assessment of pain intensity (0 = no pain, 10 = unbearable pain). Participants were asked to visualize the quantity of pain they were experiencing at that precise moment over the shoulder-neck region, both sides.

This questionnaire aims at retrieving satisfaction levels with the recruitment and data collection processes. It was adapted from the one used by Pflugeisen et al., (2016).