In physical therapy management of Duchenne muscular dystrophy, the early stage corresponds to which RPE range?

• A. 8-10/10
• B. 2-4/10
• C. 0-2/10
• D. 6-8/10

Answer: (B)

In Duchenne muscular dystrophy, the goal in the early stage is to maintain function without overloading fragile muscles. Using the RPE scale helps pace therapy so effort stays safe. The early stage is best managed with light to somewhat light exertion, which corresponds to about 2-4 on a 0-10 scale. At this level, activities like gentle range-of-motion work, low-resistance strengthening with careful monitoring, and short bouts of easy aerobic activity can help maintain mobility and circulation without causing excessive fatigue or muscle damage. Higher intensities (6-8 or 8-10) risk rapid fatigue and injury, while very light effort (0-2) may be too mild to provide meaningful maintenance of function.