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Quadriceps muscle strength is a key goal to be achieved in rehabilitation protocols for a variety of musculoskeletal conditions. Both cerebral and peripheral electrical stimulations can modulate motor brain areas involved in motor functions and has the potential to optimize muscle capacity. However, their effects on quadriceps function are lacking.
This study aims to investigate the effects of transcranial direct current stimulation (tDCS) and peripheral electrical stimulation (PES) on quadriceps strength in healthy subjects.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Cerebral stimulation | Active Comparator | Active transcranial direct current stimulation tDCS: 20 minutes, 2mA, primary motor cortex anode (contralateral to the dominant lower limb) and supraorbital cathode (ipsilateral to the dominant lower limb). |
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| Combined stimulation 1 | Experimental | Active peripheral electrical stimulation (PES_sensorial) combined with active transcranial direct current stimulation tDCS: 20 minutes, 2mA, primary motor cortex anode (contralateral to the lesion) and supraorbital cathode (ipsilateral to the lesion). PES_sensorial: 20 minutes, 10Hz (frequency), 100µs (pulse duration), intensity at sensorial level. |
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| Peripheral stimulation | Active Comparator | Active peripheral electrical stimulation (PES_motor). PES: 15 minutes, 30Hz (frequency), 100µs (pulse duration), intensity at motor level. |
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| Combined stimulation 2 | Experimental | Active sensorial peripheral electrical stimulation (PES_sensorial) combined with active motor peripheral electrical stimulation (PES_motor) PES_sensorial: 20 minutes, 10Hz (frequency), 100µs (pulse duration), intensity at sensorial level PES_motor: 15 minutes, 30Hz (frequency), 100µs (pulse duration), intensity at motor level. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cerebral stimulation | Device | Transcranial direct current stimulation (tDCS) is a noninvasive brain stimulation (NIBS) technique that has been investigated for the management of various health conditions. However, its ergogenic effect still has controversial results. |
| Measure | Description | Time Frame |
|---|---|---|
| Isometric quadriceps strength | Maximal isometric voluntary contraction (Kgf) | Pre and Post-test (immediately after tDCS) |
| Measure | Description | Time Frame |
|---|---|---|
| Isometric quadriceps strength | Maximal isometric voluntary contraction (Kgf) | During stimulation |
| Isometric quadriceps strength | Maximal isometric voluntary contraction (Kgf) |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Physical Therapy. Federal University of Piaui | ParnaÃba | Piauà | 64202020 | Brazil |
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| ID | Term |
|---|---|
| D065908 | Transcranial Direct Current Stimulation |
| ID | Term |
|---|---|
| D004599 | Electric Stimulation Therapy |
| D013812 | Therapeutics |
| D003295 | Convulsive Therapy |
| D013000 | Psychiatric Somatic Therapies |
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| Peripheral stimulation | Device | Peripheral electrical stimulation (PES) activates a complex neural network involving a series of neurotransmitters and receptors capable of promoting segmental and extrasegmental analgesia. Moreover, recent evidence has shown that PES can activate brain motor areas such as primary motor cortex. |
|
| 10 minutes post-stimulation |
| D004191 | Behavioral Disciplines and Activities |
| D004597 | Electroshock |
| D011580 | Psychological Techniques |