Task-related training improves performance of seated reaching tasks after stroke. A randomized controlled trial

Area of Science:

• Neurorehabilitation
• Motor control
• Biomechanics

Background:

• Sitting balance is crucial for independence after stroke.
• Impairments in sitting balance are common post-stroke.
• Limited research exists on effective rehabilitation strategies for sitting balance.

Purpose of the Study:

• To evaluate a 2-week task-related training program for improving seated reaching distance.
• To assess the program's effect on the contribution of the affected lower leg to support and balance.
• To determine the efficacy of task-related training in post-stroke rehabilitation.

Main Methods:

• Randomized placebo-controlled study with 20 subjects (1+ year post-stroke).
• Experimental group: task-related training (reaching beyond arm's length).
• Control group: sham training (cognitive-manipulative tasks).
• Measurements: electromyography, videotaping, force plates (movement time, reach distance, ground reaction forces, muscle activity).
• Secondary outcome measures: sit-to-stand, walking, cognitive tasks.

Main Results:

• Experimental group showed faster and further reaching post-training (P < .01).
• Increased load through the affected foot and muscle activation in the experimental group.
• Experimental group improved sit-to-stand performance; control group did not.
• No significant improvement in walking for either group.

Conclusions:

• Task-related motor training is effective for improving seated balance during reaching activities post-stroke.
• The training enhances functional mobility and support contributions from the affected limb.
• Provides strong evidence for incorporating this training into stroke rehabilitation protocols.