Effects of Neural Mobilization on Respiratory Parameters in Chronic Neck Pain

PFTs were performed using a spirometer (Schiller SP-260). Spirometric measurements were obtained using a nasal clamp while the patient was in a sitting position. At least three measurements were obtained for each participant, and the best value was considered for the study. In PFT measurements, forced expiratory volume in the 1st second (FEV1), forced vital capacity (FVC), and FEV1/FVC values were compared between the two groups

Participants' ROM of the neck was measured using a universal goniometer at baseline. The measurements for neck flexion, extension, lateral flexion, and rotation were made during active neck movements while the patient was in a seating position. For the measurement of ROM during neck flexion and extension, the goniometer was placed on the acromion, and the ROM was measured by following the midline of the ear. To measure ROM during lateral flexion, the goniometer was placed on the spinous process of the cervical vertebra 7, and the ROM was measured by tracking its movement. For the measurement of ROM during rotation, the goniometer was placed in the center of the head, and the ROM was measured by following the nose. All measurements were reported in degrees.

Pain intensity was assessed using Visual Analog Scale. A description of the parameter being evaluated was written at either end of a 10-cm horizontal line, with scores ranging from 0 (no pain) to 10 (excruciating pain). The participants were asked to choose the score that best described their pain

FreNAQ-T is a Likert-type questionnaire that assesses individual-specific altered perception (0 = I never felt/never feel this way, 1 = I rarely feel this way, 2 = I sometimes or some of the time feel this way, 3 = I often feel this way, 4 = I always or most of the time feel this way). The questionnaire consists of nine questions, for example, about how they perceive their neck in relation to their body and how they perceive their body position. The total score ranges from 0 to 36. High score indicates a poor prognosis. Onan et al. (2020) developed the Turkish version of the questionnaire and assessed its validity and reliability.