Table 2 Summary of the outcome measures and stimulation parameters for active research participants. Caption: An overview of the implant date, outcome measures, and stimulation pulse amplitude used for the subjects focused on in this study. The stimulation frequency was 12.5 Hz for Subject 01, 20–100 Hz Subject 11, and 20 Hz for the remaining participants. Pulse width was varied between 1 and 255 μs

8 charge threshold sessions from one month to 10.4 years post-implantation.

0.8 mA in 58% of the trials;

1.4 mA in 24% of the trials;

2.1 mA in 18% of the trials

10 charge threshold sessions from one month to 5.8 years post-implantation; measured moments to analyze muscle selectivity at 6.3 years post-implantation

1.4 mA

11 charge threshold sessions from one month to 5.3 years post-implantation; measured moments to analyze muscle selectivity at 4.2 years post-implantation

0.8 mA

6 recruitment curves at 4.5 years post-implantation

Left femoral: 2.1 mA

Right femoral: 18 mA

Left tibial: 2.1 mA

Right tibial: 1.4 mA

Left fibular: 1.4 mA

Right fibular: 20 mA

6 recruitment curves at 4.5 years post-implantation

Left femoral: 1.4 mA

Right femoral: 0.8 mA

Right tibial: 2.1 mA

Right fibular: 2.1 mA

Left tibial: 1.4 mA

Left fibular: 2.1 mA

13 charge threshold sessions from three weeks to 4.6 years post-implantation.

Radial contact #1: 0.5–0.7 mA

Radial contact #2: 0.4–0.7 mA

Radial contact #3: 0.3–0.6 mA

Radial contact #4: 0.3–0.5 mA

2 recruitment curves at 2 years post-implantation

1.5 mA

2 recruitment curves at 2 years post-implantation

Left femoral: 7 mA

Right femoral: 8 mA