Exoskeleton myth: Do exoskeletons lead to muscle loss?

Many people view exoskeletons with curiosity—but some also with skepticism. One of the most common questions is: "Won't the support provided by an exoskeleton cause my muscles to atrophy?"

At first glance, this concern seems understandable. After all, we know that muscles adapt to how they are used. But a closer look reveals that, in practical use, the fear of muscle loss (muscle atrophy) does not apply to exoskeletons. We are happy to explain why.

Where this fear comes from—and why it does not apply to exoskeletons

The origin of this concern lies in the medical field: orthoses are used to immobilize joints. When a joint is hardly moved, the muscle loses strength over time.

But here lies the crucial difference:

• Exoskeletons are not worn permanently.

• They are only used when there is a risk of overload.

• They do not restrict movement, but allow maximum mobility.

Instead of immobilizing the body, healthy movements without overload are maintained.

What practice shows: support instead of underchallenging

Yes, muscles react to stress. And yes, in theory, an exoskeleton could reduce muscle work. But research shows a very different picture:

The reduction in muscle activity caused by an exoskeleton is deliberately limited. Studies show that exoskeletons—whether active or passive—reduce muscle activity by an average of 20–30% (sometimes more, sometimes less), depending on the activity, model, and weight carried. Internal research by exoIQ also shows that the heavier the load, the smaller the percentage of relief.

This means that when muscles are under high strain, the percentage of force absorbed by the exoskeleton decreases. An exoskeleton reduces muscular overload and maintains healthy muscle strain.

Many users even report that they noticeably use their muscles while working with the exoskeleton. This is a clear sign that the muscles remain active and retain their performance capacity.

The real problem in everyday working life: too much—not too little—muscle work

More than 60% of employees in Germany suffer from musculoskeletal disorders.

The cause is rarely insufficient use of the muscles, but rather the opposite: constant overuse.

Whether lifting heavy loads or repeatedly moving light tools, even small differences in weight can determine how long an activity remains feasible. This is exactly where exoskeletons come in: they reduce excessive strain and thus create space for sustainable performance.

Active or passive – the differences do not affect muscle loss

When it comes to muscle atrophy, there is no fundamental difference between active and passive exoskeletons. Active exoskeletons often provide greater support than passive ones. Nevertheless, the reduction in muscle activity is not at a level that causes a decline in muscle performance.

Conclusion: Exoskeletons protect the muscles—they do not weaken them.

An exoskeleton is not a substitute for muscle work. It is a partner. An exoskeleton makes a load feel lighter, but the muscle work remains the same. Instead of overload, controlled, healthy movements are created. This is precisely what protects long-term performance—and makes muscle atrophy unlikely in everyday working life.