Non-invasive Vibratory Stimulation of the Knee Muscles for the Improvement of the Somatosensory Input and Motor Performance
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Vibratory stimulation.
- Who it may be relevant to
- Registry conditions: Vibration. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Italy
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Stimolazione Vibratoria Non-invasiva Per il Miglioramento Del Ritorno Sensoriale e Della Performance Motoria in Atleti Con Lesione al Legamento Crociato Anteriore
Overview
The goal of this interventional cross-sectional study is to evaluate motor responses to non-invasive vibratory stimulation applied to the hamstring muscle tendons in healthy individuals. Knee flexion and extension efforts, in both isometric and concentric contractions, will be tested. The investigators hypothesize that vibratory stimulation causes an increase in activity in the flexor muscles (hamstrings) and a decrease in the extensor muscles (quadriceps) of the knee in all motor tasks. It follows that during knee flexion (both concentric and isometric), vibratory stimulation should cause an increase in the distance between the angular trajectories of the knee obtained with and without vibratory stimulation (with a positive sign). The increased activity of the hamstring muscles would, in fact, contribute to increasing the velocity of the flexor movement. Conversely, during extensor movements (both concentric and isometric), vibratory stimulation should reduce the instantaneous velocity of the movement, therefore causing an increase in distance (with a negative sign) between the trajectories obtained with and without stimulation. Participants will be tested using an isokinetic dynamometer and they will be asked to perform the following motor tasks in a random order: concentric knee flexion, concentric knee extension, isometric knee flexion, and isometric knee extension. The dominant limb will be tested, only. The assessment will be performed one time.
Interventions
- Device Vibratory stimulation
A vibratory stimulator will be applied to the back of the dominant leg, at the level of the hamstring muscle tendons. The stimulator consists of two small vibrating boxes fixed to the leg by means of an elastic band.
Primary outcome measures
- Knee angle [Time frame: Day 1.]
- Surface electromyography (sEMG) [Time frame: Day 1.]
Eligibility criteria
Inclusion criteria
- Age equal to or greater than 18 years.
Exclusion criteria
- Neurological disorders.
- Musculoskeletal injuries, including previous ones, that may compromise the execution of required movements.
- Cardiorespiratory disorders.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- N/A
- Model
- Single group
- Masking
- Open label
- Primary purpose
- Basic science
Study locations
Italy · 1 center
- Istituto Auxologico Italiano, Clinica Capitanio — Milan
Identifiers
NCT: NCT07424066 · Prot. Nr. 138/25