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Feasibility of transcutaneous spinal direct current stimulation combined with locomotor training after spinal cord injury.


ABSTRACT:

Study design

Feasibility study, consisting of random-order, cross-over study of a single intervention session, followed by a parallel-arm study of 16 sessions.

Objectives

To investigate the feasibility of a novel combinatorial approach with simultaneous delivery of transcutaneous spinal direct current stimulation (tsDCS) and locomotor training (tsDCS + LT) after spinal cord injury, compared to sham stimulation and locomotor training (sham + LT), and examine preliminary effects on walking function.

Setting

Clinical research center in the southeastern United States.

Methods

Eight individuals with chronic incomplete spinal cord injury (ISCI) completed the two-part protocol. Feasibility was assessed based on safety (adverse responses), tolerability (pain, spasticity, skin integrity), and protocol achievement (session duration, intensity). Walking function was assessed with the 10 m and 6 min walk tests.

Results

There were no major adverse responses. Minimal reports of skin irritation and musculoskeletal pain were consistent between groups. Average training peak heart rate as percent of maximum (mean(SD); tsDCS + LT: 66 (4)%, sham + LT: 69 (10)%) and Borg ratings of perceived exertion (tsDCS + LT: 17.5 (1.2), sham + LT: 14.4 (1.8)) indicate both groups trained at high intensities. Walking speed gains exceeded the minimal clinically important difference (MCID) in three of four who received tsDCS + LT (0.18 (0.29) m/s) and one of four in sham + LT (-0.05 (0.23) m/s). Gains in walking endurance exceeded the MCID in one of four in each group (tsDCS + LT: 36.4 (69.0) m, sham + LT: 4.9 (56.9) m).

Conclusions

Combinatorial tsDCS and locomotor training is safe and feasible for individuals with chronic ISCI, even those with considerable walking impairment. Study outcomes support the need to investigate the efficacy of this approach.

SUBMITTER: Hawkins KA 

PROVIDER: S-EPMC9606142 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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Feasibility of transcutaneous spinal direct current stimulation combined with locomotor training after spinal cord injury.

Hawkins Kelly A KA   DeMark Louis A LA   Vistamehr Arian A   Snyder Hannah J HJ   Conroy Christy C   Wauneka Clayton C   Tonuzi Geneva G   Fuller David D DD   Clark David J DJ   Fox Emily J EJ  

Spinal cord 20220427 11


<h4>Study design</h4>Feasibility study, consisting of random-order, cross-over study of a single intervention session, followed by a parallel-arm study of 16 sessions.<h4>Objectives</h4>To investigate the feasibility of a novel combinatorial approach with simultaneous delivery of transcutaneous spinal direct current stimulation (tsDCS) and locomotor training (tsDCS + LT) after spinal cord injury, compared to sham stimulation and locomotor training (sham + LT), and examine preliminary effects on  ...[more]

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