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Table 3 Algorithm thresholds and muscles stimulated during collision and turn events for each participant

From: Automatic application of neural stimulation during wheelchair propulsion after SCI enhances recovery of upright sitting from destabilizing events

 

Collisions

Turns

Mean of the Peak AP Acceleration

Algorithm Threshold

Muscles Stimulated

Mean of the Peak SI Angular Velocity

Algorithm Threshold

Right Turn: Muscles Stimulated

Left Turn: Muscles Stimulated

S1

3.93 ± 0.08 g

3.76 g

PA, GM, ES, QL

126.23 ± 13.8 deg./s

98.63 deg./s

Right ES, Left GM, Right QL, Right/Left PA

Left ES, Right GM, Left QL, Right PA

S2

3.83 ± 0.22 g

3.39 g

PA, GM, ES, QL, IP

105.5 ± 2.73 deg./s

100.04 deg./s

Right ES, Right/Left GM, Right QL, Right/Left PA, Right/Left IP

Left ES, Right/Left GM, Right/Left PA, Right/Left IP

S3

3.87 ± 0.19 g

3.48 g

GM, ES, QL, HS

109.77 ± 4.88 deg./s

100.00 deg./ s

Left GM, Left HS

Left ES, Right GM, Right HS

S4

–

–

–

105.30 ± 4.08 deg./s

97.10 deg./s

Right ES, Right/Left GM, Right, QL, Right/left PA

Left ES, Right/Left GM, Left QL, Right/Left PA

  1. Labels: ES Erector Spinae, GM Gluteus Maximus, QL Quadratus Lumborum, PA Posterior Adductor, IP Iliopsoas, TF Tensor Fascia Latae, HS Hamstring