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  • Title: Step Ergometer Training Augmented With Functional Electrical Stimulation in Individuals With Chronic Spinal Cord Injury: A Feasibility Study.
    Author: Tefertiller C, Gerber D.
    Journal: Artif Organs; 2017 Nov; 41(11):E196-E202. PubMed ID: 29148128.
    Abstract:
    Spinal cord injury (SCI) often results in loss of upright mobility and independence subsequently challenging rehabilitation practitioners for meaningful intervention strategies. The objective of this study was to evaluate the feasibility and potential impact on walking function of the stimulation and ergometer training protocol (STEP) in chronic SCI. Fourteen individuals with a chronic motor incomplete SCI (>1-year post injury) were enrolled in the study. The intervention consisted of a 12-week walking training program delivered three times per week from 20 up to 45 min in combination with 10 channels of FES on a step ergometer. Subsequent to this training, 30 min over ground walking training was performed. Ten out of the 14 participants completed the trial (71%). All participants who completed the intervention increased their walking speed by an average of 0.13 m/s (0.08) and walking endurance by an average of 117 ft (84 ft). For those who completed the trial, 50% demonstrated increases on the Walking Index for Spinal Cord Injury II by at least one level while 60% demonstrated an increase in lower extremity motor scores; all completing the Timed Up and Go Test at baseline demonstrated a reduction in time to complete during post-test evaluation. Recruitment objectives were attained. Overall retention was lower than anticipated with 29% withdrawing secondary to issues with lower extremity pain and exertional demands; however, no other adverse events occurred. Improvements in mobility outcomes generated by the STEP show promise in the context of feasibility and warrant further investigation to evaluate efficacy in comparison to other walking recovery interventions. The STEP was well-tolerated by participants who were >1 year and less than 10 years post SCI. Those completing the protocol exhibited improvements in commonly used SCI walking outcome measures.
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