The effect of exercise on ankylosing spondylitis--a preliminary study

Area of Science:

• Rheumatology
• Sports Medicine
• Biomechanical Engineering

Background:

• Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the spine.
• Limited spinal mobility is a hallmark symptom of AS, impacting quality of life.
• The role of exercise in maintaining or improving spinal range of motion in AS patients requires further investigation.

Purpose of the Study:

• To assess the immediate and long-term effects of exercise on lumbar spinal motion in patients with ankylosing spondylitis.
• To compare the impact of moderate versus vigorous exercise intensity on spinal mobility.
• To evaluate changes in extension, flexion, and lateral bending range of motion.

Main Methods:

• Utilized the Polhemus Navigation Sciences 3Space Isotrak system to measure lumbar spinal motion.
• Recruited 57 patients with ankylosing spondylitis, categorizing them into exercise and non-exercise groups.
• Monitored 44 patients over 2-6 months, tracking changes in spinal mobility parameters.

Main Results:

• A single vigorous exercise session showed a small, significant increase in lumbar extension immediately post-exercise.
• No significant changes in other spinal movements (flexion, lateral bend) were observed immediately post-exercise.
• Over 2-6 months, a slight loss in flexion and lateral bend was noted in a subgroup, with no change in extension range.

Conclusions:

• Vigorous exercise may offer short-term benefits for lumbar extension in AS patients.
• Formal exercise programs did not demonstrate significant long-term improvements in overall lumbar spinal range of motion.
• Further research is needed to optimize exercise interventions for ankylosing spondylitis management.