For most people, the act of standing up from a favorite armchair or climbing a short flight of stairs is a subconscious movement. But for those living with Lambert-Eaton myasthenic syndrome (LEMS), these routine tasks can become significant physical hurdles. This rare autoimmune condition disrupts the communication between nerves and muscles, often manifesting first as a profound weakness in the hips and upper legs.
Due to the fact that LEMS specifically impairs the neuromuscular junction, the muscles required for stability and lift—namely the thighs and glutes—are frequently the first to struggle. This creates a specific set of mobility challenges that can impact everything from grocery shopping to basic hygiene. However, by utilizing specific physiological phenomena and mechanical strategies, individuals can navigate chairs and stairs when you have Lambert-Eaton Myasthenic Syndrome more safely and with greater independence.
Managing these movements requires a combination of neurologic physical therapy and environmental adjustments. The goal is not simply to “push through” the weakness, but to work with the unique way LEMS affects muscle response. For many, the key lies in a paradoxical feature of the disease: the fact that movement can sometimes create temporary strength.
Harnessing the Warm-Up Effect
One of the most distinct characteristics of LEMS is the “warm-up effect.” Unlike many other forms of muscle weakness that worsen with activity, LEMS muscles often feel weakest after a period of rest and may show a temporary improvement in strength following a brief bout of repetitive movement.
Kathryn Jira, a physical therapist at the Ohio State University Wexner Medical Center in Columbus, explains that this phenomenon allows patients to “prime” their bodies. By performing light, repetitive motions before attempting a more demanding task, patients can improve nerve-to-muscle transmission, making the subsequent activity feel more manageable.
To prepare for standing or walking, clinicians suggest a series of seated movements to wake up the lower body:
- Seated leg extensions: Slowly straightening the legs while seated.
- Heel raises: Lifting the heels while keeping the toes on the floor.
- Seated marching: Alternating the lifting of the knees.
- Sustained contractions: Firmly squeezing the thigh or buttock muscles.
While this priming is effective, Jira warns against overdoing it. Pushing too hard during the warm-up can lead to premature fatigue, which may negate the benefits of the effect. The strategy is to move with intention and allow for extra time rather than rushing the process.
The Mechanics of Standing Safely
Standing up from a seated position is often one of the most difficult transitions for those with LEMS because it relies so heavily on the proximal muscles of the hips. To reduce the strain, Katie Gingras, DPT, a board-certified neurologic physical therapist with UC Health in Cincinnati, recommends a deliberate, step-by-step approach designed to maximize momentum.
The process begins with positioning: scoot toward the edge of the chair and place feet flat on the floor, tucked slightly beneath the body. Using armrests or placing hands beside the hips provides the necessary leverage. From there, the individual should lean forward and rock their weight. “The safest and most effective technique includes rocking forward to use momentum to assist with standing,” Gingras says.
The environment also plays a critical role. Firm, higher surfaces are generally easier to exit than soft, deep sofas. Utilizing chairs with sturdy armrests or installing a raised toilet seat can significantly reduce the amount of muscular effort required to reach a standing position.
Once standing, a brief pause is essential. Andrea Jaworek, also a physical therapist at the Wexner Medical Center, advises taking a moment to ensure stability. This is particularly important because LEMS can affect the autonomic nervous system, leading to orthostatic hypotension—a drop in blood pressure upon standing that can cause dizziness or lightheadedness.
Navigating Stairs and Reducing Fall Risk
Climbing stairs is a high-demand activity that requires repeated, powerful activation of the hip and thigh muscles. To manage this, therapists recommend a slow, methodical pace, placing both feet on each step before proceeding to the next.
A common mnemonic used by therapists to ensure safety is “Up with the good, down with the bad.” This means leading with the stronger leg when ascending and leading with the weaker leg when descending. Jaworek emphasizes the importance of always using a handrail for support. For those with severe weakness, alternative strategies may include climbing stairs sideways to maintain more contact with the rail, or in extreme cases, scooting up or down the steps while seated.
Beyond stairs, LEMS can introduce several fall risks, including a “waddling” gait caused by hip weakness and delayed balance reactions. To mitigate these risks, the following home modifications and habits are recommended:
| Area | Modification | Purpose |
|---|---|---|
| Floors | Remove throw rugs and cords | Eliminate tripping hazards |
| Bathroom | Install grab bars and shower chairs | Provide stability during transfers |
| Stairs | Add dual handrails | Increase balance and support |
| Lighting | Add night-lights in hallways | Improve visibility and reaction time |
| Furniture | Adjust bed or toilet height | Ease the sit-to-stand transition |
The use of assistive devices—such as canes or walkers—is often viewed by patients as a loss of independence. However, Gingras notes that these tools actually preserve independence by conserving energy. By reducing the effort spent on basic stability, patients can save their strength for higher-demand tasks.
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
As research into the pathophysiology of LEMS continues, the integration of specialized neurologic physical therapy remains the gold standard for maintaining quality of life. Patients are encouraged to work with an occupational or physical therapist to create a personalized mobility plan tailored to their specific level of muscle weakness.
We invite readers to share their experiences with mobility strategies in the comments below or share this guide with others in the LEMS community.
