Spondylarthropathies; Spondylitis, Ankylosing

The goal of this clinical trial is to assess whether a tailored digital Adapted Physical Activity (APA) program can improve physical activity levels and sleep quality in adults diagnosed with spondyloarthritis (SpA). The main questions it aims to answer are: Does participation in a 6-month digital APA program increase average daily step count (measured with an activity tracker)? Does the program improve sleep quality (measured with the Pittsburgh Sleep Quality Index)? Researchers will compare participants receiving general physical activity advice (control group) to those following a structured digital APA program (intervention group) to see if the tailored digital support leads to better outcomes. Participants will: Complete baseline assessments including physical activity, sleep, pain, and quality of life measures. Be randomly assigned to a control group or intervention group. For the intervention group, follow an individualized exercise program delivered through a virtual platform with support from an APA professional over 10 virtual sessions. Wear a connected activity tracker (Withings) to monitor physical activity throughout the study. Complete follow-up assessments at 6 and 12 months.

The aim of this study is to evaluate the relationship between ultrasonographic measurements of the cervical muscles and balance parameters in patients diagnosed with ankylosing spondylitis (AS)