What Are the Best Physical Therapy Exercises for CMT1A?

If you have Charcot-Marie-Tooth disease type 1A (CMT1A), you might wonder if exercising will wear out your already diseased nerves faster, or if you need to push yourself as hard as possible to stay strong. The good news is that staying active is one of the best ways to manage your condition. Research shows that targeted exercise does not cause signs of “overwork weakness” or accelerate disease progression ^[1][2]. However, the key is finding the right balance. A well-designed physical therapy routine—ideally overseen by a neurologist or physical therapist—that includes low-impact aerobic activity, moderate resistance training, and daily stretching can help improve your walking, manage pain, and maximize your independence ^[3][4].

Aerobic Exercise for Stamina

Aerobic training helps improve your overall cardiovascular fitness and endurance ^[5][6]. Because CMT1A can cause muscle weakness and sensory changes in your lower legs, high-impact activities like running might be uncomfortable or increase your risk of falls ^[7].
Instead, focus on low-impact aerobic exercise, which provides heart health benefits without putting excessive stress on your feet and ankles. Safe, effective options include:

• Swimming or water aerobics
• Recumbent stationary cycling (which offers back support and a lower center of gravity)
• Rowing

Resistance and Balance Training

You do not need to lift heavy weights to see benefits. Moderate, progressive resistance training helps maintain the strength you have and can improve your ability to perform daily tasks ^[2]. Because the muscles furthest from the center of your body (distal muscles in your feet and lower legs) are most affected by CMT1A, therapy often focuses on strengthening your stronger proximal muscles—like your core, hips, and thighs. This helps your upper legs and core compensate for lower leg weakness. Gentle exercise can help maintain the remaining strength in your lower legs, but you should avoid aggressively overworking severely weakened distal muscles ^[1]. Strengthening your body can improve your walking speed and stride length, especially when combined with Ankle-Foot Orthoses (AFOs) or other supportive braces if your doctor has recommended them ^[8][3].

Additionally, CMT1A can affect your hands, making tasks like buttoning shirts or opening jars difficult. Maintaining your upper body, forearm, and grip strength is an important part of a comprehensive routine ^[9].

Because CMT1A often affects the nerves that help you feel where your feet are in space (proprioception), you may be at a higher risk for tripping or falling ^[7][10]. Incorporating balance exercises into your routine can help train your body to stay stable ^[2]. Since standing unassisted can be dangerous with sensory loss, practice safe balance techniques, such as weight-shifting while securely holding onto a sturdy kitchen counter or wall.

The Importance of Daily Stretching

One of the most common physical challenges in CMT1A is the shortening of muscles and tendons, known as contractures. When the muscles on the front of your leg weaken, the stronger calf muscles can pull the foot downward, leading to a tightened Achilles tendon.
Regular rehabilitation procedures, including daily stretching, are crucial for preventing these ankle contractures and maintaining your joint range of motion ^[9]. Focus on gently stretching your calves, Achilles tendons, and hamstrings every day. Many patients find that regular stretching of the calves also helps reduce the frequency of severe leg cramps at night.

Pacing Yourself: Avoiding Overexertion

While exercise is essential, pushing yourself to the point of severe exhaustion is not helpful. Overtraining or exercising to the point of profound fatigue can lead to muscle cramping, joint pain, and a temporary increase in weakness ^[1].

Listen to your body. It is completely normal to feel mild muscle soreness after a workout, but if you are experiencing severe exhaustion, pain, or weakness that lasts into the next day, you are likely pushing too hard. To manage fatigue, consider breaking your exercise up into smaller 10- to 15-minute chunks throughout the day rather than trying to power through a long session. A physical therapist experienced in neuromuscular conditions can help you design a routine that challenges you safely while avoiding overexertion.