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Related Concept Videos

Muscles of the Vertebral Column01:27

Muscles of the Vertebral Column

The back muscles that lie deep into the thoracolumbar fascia are called intrinsic or true back muscles. These muscles are divided into four layers: superficial, intermediate, deep, and deepest layers.
Superficial Layer:
The superficial layer consists primarily of the splenius muscles, which include the splenius capitis and splenius cervicis. These muscles are mainly responsible for the head and cervical spine movements, including extension, rotation, and lateral bending. The splenius capitis...

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Related Experiment Video

Updated: Jun 18, 2026

Training Persons with Spinal Cord Injury to Ambulate Using a Powered Exoskeleton
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Reducing Lumbar Extensor Exertion in Lifting Tasks with a Powered Back Exosuit.

Ian Cullen, Christoph Nuesslein, Aaron Young

    IEEE Transactions on Bio-Medical Engineering
    |January 14, 2026
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    Summary
    This summary is machine-generated.

    A new cable-driven powered exosuit reduced lumbar muscle activity during lifting tasks, similar to passive devices. Users preferred the powered exosuit, suggesting potential for improved workplace ergonomics.

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    Area of Science:

    • Biomechanics
    • Human-Robot Interaction
    • Occupational Health

    Background:

    • Lifting tasks commonly cause lumbar injuries.
    • Passive exoskeletons offer some support but have limitations.
    • Powered exoskeletons aim to provide greater assistance.

    Purpose of the Study:

    • To evaluate a cable-driven powered exosuit for reducing lumbar muscle activity and metabolic cost during lifting.
    • To compare the powered exosuit against a passive exoskeleton and a no-exosuit condition.

    Main Methods:

    • A lightweight, cable-driven back exosuit with an impedance controller was developed.
    • Ten participants performed symmetric and asymmetric lifting tasks.
    • Electromyography (EMG), metabolic cost, and user preference were recorded.

    Main Results:

    • Both powered and passive exoskeletons significantly reduced lumbar muscle activation compared to no support.
    • Neither exoskeleton significantly reduced metabolic cost during lifting.
    • Users showed a preference for the powered exosuit over the passive one.

    Conclusions:

    • Powered exoskeletons can effectively reduce lumbar muscle activity, comparable to passive devices.
    • Cable-driven powered exoskeletons may overcome limitations of heavier, rigid powered designs.
    • User preference suggests powered exoskeletons are a viable alternative for ergonomic support.