Study: NCT02659826

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: anodal tsDCS
Description: Transcutaneous spinal cord stimulation will be delivered through a direct current (DC) stimulator (NeuroConn Plus, Germany) using a pair of saline-soaked sponge electrodes (35cm²). The active electrode (anode) will be placed between the eleventh and the twelfth thoracic vertebra) and the reference electrode, over the right arm (deltoid muscle). Will be delivered a current intensity of 2.5 milliampere (mA), fade in and fade out of 10 seconds, during 20 minutes.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: cathodal tsDCS
Description: Transcutaneous spinal cord stimulation will be delivered through a DC stimulator (NeuroConn Plus, Germany) using a pair of saline-soaked sponge electrodes (35cm²). The active electrode (cathode) will be placed between the eleventh and the twelfth thoracic vertebra) and the reference electrode, over the right arm (deltoid muscle). Will be delivered a current intensity of 2.5 mA, fade in and fade out of 10 seconds, during 20 minutes.

Intervention type: DEVICE
Group type: SHAM_COMPARATOR
Intervention: sham tsDCS
Description: sham transcutaneous spinal cord stimulation will be delivered through a DC stimulator (NeuroConn Plus, Germany) using a pair of saline-soaked sponge electrodes (35cm²). The electrode anode will be placed between the eleventh and the twelfth thoracic vertebra) and the reference electrode, over the right arm (deltoid muscle). Will be delivered a current intensity of 2.5 mA, fade in and fade out of 10 seconds, during only 30 seconds but the volunteers will continue with electrodes montage for 20 minutes.Thus, early sensations (eg. mild to moderate tingling or itch) on stimulation site will be experienced without inducing any modulatory effects.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Gait training
Description: It consists of moderate gait training exercise for 20 minutes. To ensure that the exercise will be performed at moderate intensity will be used the 64% - 76% of maximum heart rate (HRmax = 220-age). Heart rate will be monitored every three minutes through a heart polar. In addition will be monitored perceived effort, gait speed and inclination of the treadmill. The Borg scale will be used to evaluate perceived effort. This is an analogue scale graded from 6 (light exercise) to 20 points (exhaustive exercise). Information about the exercise on the treadmill will be noted in the evolution record.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Gait training
Description: It consists of moderate gait training exercise for 20 minutes. To ensure that the exercise will be performed at moderate intensity will be used the 64% - 76% of maximum heart rate (HRmax = 220-age). Heart rate will be monitored every three minutes through a heart polar. In addition will be monitored perceived effort, gait speed and inclination of the treadmill. The Borg scale will be used to evaluate perceived effort. This is an analogue scale graded from 6 (light exercise) to 20 points (exhaustive exercise). Information about the exercise on the treadmill will be noted in the evolution record.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Gait training
Description: It consists of moderate gait training exercise for 20 minutes. To ensure that the exercise will be performed at moderate intensity will be used the 64% - 76% of maximum heart rate (HRmax = 220-age). Heart rate will be monitored every three minutes through a heart polar. In addition will be monitored perceived effort, gait speed and inclination of the treadmill. The Borg scale will be used to evaluate perceived effort. This is an analogue scale graded from 6 (light exercise) to 20 points (exhaustive exercise). Information about the exercise on the treadmill will be noted in the evolution record.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Gait training
Description: It consists of moderate gait training exercise for 20 minutes. To ensure that the exercise will be performed at moderate intensity will be used the 64% - 76% of maximum heart rate (HRmax = 220-age). Heart rate will be monitored every three minutes through a heart polar. In addition will be monitored perceived effort, gait speed and inclination of the treadmill. The Borg scale will be used to evaluate perceived effort. This is an analogue scale graded from 6 (light exercise) to 20 points (exhaustive exercise). Information about the exercise on the treadmill will be noted in the evolution record.