Is it advisable to do exercise when affected by Sanfilippo Syndrome? Which activities would you suggest and how intense should they be?

Physical activity is generally recommended for individuals with Sanfilippo Syndrome, as it can help maintain mobility, improve muscle tone, and support overall quality of life. While exercise must be highly adapted to the individual's specific stage of disease progression and physical capabilities, low-impact movements supervised by a physical therapist can mitigate common complications like joint contractures and muscle weakness.

Is exercise safe for someone with Sanfilippo Syndrome?

Yes, exercise is encouraged for those living with Sanfilippo Syndrome, provided it is approached with clinical guidance. Because Sanfilippo Syndrome (MPS III) affects multiple body systems—including the skeletal and muscular systems—the primary goal of movement is not high-intensity fitness, but rather "functional maintenance." Movement helps manage the stiffening of joints (contractures) that often accompanies the disease and can provide sensory input that helps manage the hyperactivity commonly associated with the condition. Always consult your multidisciplinary care team before beginning a new routine, as medical clearance is essential to account for potential issues like hydrocephalus or seizure activity.

What types of exercise are most beneficial for Sanfilippo Syndrome?

The best activities for individuals with Sanfilippo Syndrome are low-impact, rhythmic, and supportive. Because the disease can lead to a loss of motor skills over time, the focus should be on preserving range of motion and core stability. Consider the following activities:

• Hydrotherapy (Swimming): Water provides buoyancy that supports the body, making it easier to move stiff joints and build muscle strength without putting stress on the skeleton.


• Gentle Walking: If mobility allows, supported walking or using a gait trainer helps maintain bone density and cardiovascular health.


• Range-of-Motion Exercises: Gentle, passive or active-assisted stretching helps prevent the joint contractures that are frequent in Sanfilippo Syndrome.


• Rhythmic Movement: Activities that emphasize repetitive, predictable motions can be soothing for those experiencing the cognitive and behavioral challenges of the syndrome.

Which activities should be avoided?

High-impact or contact sports are generally contraindicated for patients with Sanfilippo Syndrome. Activities that carry a high risk of falling or head trauma should be strictly avoided, particularly if the patient has hydrocephalus or an unstable gait. Furthermore, if a patient is experiencing significant respiratory illness or cardiac fatigue, exercise intensity must be lowered significantly or paused. Never force an activity if the individual shows signs of distress, as the goal is to improve comfort, not to push physical limits to the point of exhaustion.

How can physical therapy support those with Sanfilippo Syndrome?

Physical therapy (PT) is a cornerstone of management for Sanfilippo Syndrome. A physical therapist experienced in rare metabolic conditions can design a "pacing" strategy that adapts to the patient’s "good days" and "bad days." On days when the patient is fatigued or experiencing increased insomnia, therapy sessions should focus on gentle sensory integration or passive stretching rather than active exertion. PT is vital for assessing the need for orthotics or assistive devices that can keep the individual moving safely as their motor skills decline.

Next steps

• Consult with a pediatric physiatrist or a physical therapist specializing in neuro-metabolic disorders to create a personalized movement plan.


• Reach out to the 114 community members on DiseaseMaps.org to share experiences regarding adaptive equipment and daily movement routines.


• Monitor for signs of physical distress during activity, such as increased breathing difficulty or behavioral outbursts, and adjust intensity accordingly.


• Stay informed about ongoing gene therapy and enzyme replacement trials via the Team Sanfilippo Foundation to see how emerging treatments may eventually impact physical function.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.

References

• National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD): Sanfilippo Syndrome.


• Orphanet: Mucopolysaccharidosis type 3 (MPS III).


• Team Sanfilippo Foundation: Clinical Research and Therapeutic Updates.


• OMIM (Online Mendelian Inheritance in Man): Mucopolysaccharidosis IIIA, IIIB, IIIC, and IIID.