Effects of Stimulating Hip and Trunk Muscles on Seated Stability, Posture and Reach after Spinal Cord Injury

Arch Phys Med Rehabil, 2013 · DOI: 10.1016/j.apmr.2013.02.023 · Published: September 1, 2013

Spinal Cord Injury Neurology Rehabilitation

Simple Explanation

Individuals with spinal cord injuries often lack control of their core trunk and hip muscles, leading to instability and health problems. This study explores whether electrical stimulation of the gluteal and paraspinal muscles can improve seated function in individuals with paralysis. The research aims to determine if electrical stimulation can improve seated posture, reach, and subjective perceptions of ease or difficulty.

Study Duration

Not specified

Participants

Eight users of implanted neuroprostheses

Evidence Level

Case series with subjects acting as their own concurrent controls

Key Findings

1
Stimulation significantly increased trunk extension moment and rowing force compared to baseline values.
2
Positive changes in pelvic tilt and shoulder height were observed during quiet sitting and bimanual reaching with stimulation.
3
Participants rated tasks as easier with stimulation than with voluntary effort alone.

Research Summary

The study investigated the effects of electrical stimulation of hip and trunk muscles on seated function in individuals with spinal cord injury. Results showed significant improvements in trunk extension moment, rowing force, pelvic tilt, and shoulder height with stimulation. The findings suggest that stabilizing the paralyzed trunk with electrical stimulation can positively impact seated posture and reach.

Practical Implications

Improved Seated Stability

Electrical stimulation can enhance seated stability, allowing individuals with SCI to exert larger forces on objects.

Enhanced Posture

Stimulation can positively modulate seated posture, promoting better skeletal alignment and lumbar curvature.

Increased Functional Capacity

Electrical stimulation has the potential to improve the functional capacity, daily functioning, and quality of life for individuals with SCI.

Study Limitations

1
Small sample size that compromises rigorous exploration of inter-subject differences.
2
Uncontrolled variables such as time-post-injury and exercise history with electrical stimulation.
3
Variations in stimulated responses from differences in electrode insertion techniques.

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