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Eco-guided Neuromodulation of the Femoral Nerve on the Performance of Amateur Athletes.

17. juli 2026 opdateret af: Jacobo Rodríguez Sanz, Universitat Internacional de Catalunya

Effectiveness of Eco-guided Neuromodulation of the Femoral Nerve on the Performance of Amateur Athletes. Randomized Controlled Crossover Clinical Trial

This randomized crossover study aims to evaluate whether different percutaneous electrical nerve stimulation (PENS) protocols produce changes in neuromuscular performance in healthy adults. PENS involves the ultrasound-guided application of an electrical current through a needle to modulate motor neuron excitability. Each participant will undergo five intervention sessions: (1) a long-term potentiation (LTP)-based protocol with impulse trains, (2) a 10 Hz protocol with 10 s stimulation and 10 s rest repeated ten times, (3) a 5-55 protocol with 100 Hz stimulation for 5 s followed by 55 s rest repeated five times, (4) a high-intensity burst (HIB) protocol applied at a high current intensity close to 1000 mA and repeated three times, and (5) a placebo condition. All interventions will be applied bilaterally by an experienced physiotherapist under ultrasound guidance, with a two-week washout between sessions. The objective of this trial is to assess whether these stimulation patterns produce measurable changes in squat execution velocity, jump performance, and quadriceps strength. The findings may help identify the most effective stimulation strategy for enhancing neuromuscular performance.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

23

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Jacobo Rodríguez Sanz, PhD
  • Telefonnummer: +34 636-136-789
  • E-mail: jrodriguezs@uic.es

Studiesteder

    • Barcelona
      • Sant Cugat del Vallès, Barcelona, Spanien, 08195
        • Rekruttering
        • Universitat Internacional de Catalunya
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Athletes aged between 18 and 30 years.
  • Familiarized with performing barbell back squats using an Olympic bar.
  • Engaged in regular training at least three times per week during the last six months.
  • Able to perform squat and jump tests safely.
  • Provided written informed consent to participate in the study.

Exclusion Criteria:

  • Sports injury within the last two months or current inability to perform physical activity.
  • Inability to understand or follow the instructions provided by the therapist.
  • Participation in another research study during the same period.
  • Belonephobia (fear of needles).
  • Ongoing medical or pharmacological treatment that could interfere with neuromuscular performance (e.g., anticonvulsants, antidepressants, or similar medications).

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Theta Burst Protocol
The intervention consists of the bilateral, ultrasound-guided insertion of a needle for percutaneous electrical nerve stimulation (PENS), following a theta-burst pattern designed to produce long-term potentiation-like effects. An asymmetric biphasic compensated current with a rectangular positive phase and a triangular negative phase is applied at a frequency of 100 Hz for 5 seconds, followed by 55 seconds of rest, repeated five times. The pulse width is 240 µs, and the intensity is maintained above the motor threshold and below the pain threshold.
The intervention consists of the bilateral, ultrasound-guided insertion of a needle for percutaneous electrical nerve stimulation (PENS), following a theta-burst pattern designed to produce long-term potentiation-like effects. An asymmetric biphasic compensated current with a rectangular positive phase and a triangular negative phase is applied at a frequency of 100 Hz for 5 seconds, followed by 55 seconds of rest, repeated five times. The pulse width is 240 µs, and the intensity is maintained above the motor threshold and below the pain threshold.
Andre navne:
  • Impulse Train Protocol
Eksperimentel: 10-10-10 Protocol
The intervention consists of the bilateral, ultrasound-guided insertion of a needle for percutaneous electrical nerve stimulation (PENS). An asymmetric biphasic compensated current is applied, with a rectangular positive phase and a triangular negative phase, at a frequency of 10 Hz, pulse width of 240 µs, and an intensity above the motor threshold and below the pain threshold. Each stimulation period lasts 10 seconds, followed by 10 seconds of rest, repeated ten times.
Percutaneous electrical nerve stimulation (PENS) applied under ultrasound guidance at 10 Hz, consisting of 10 seconds of stimulation followed by 10 seconds of rest, repeated ten times. The current intensity is adjusted to produce visible muscle contraction without pain.
Eksperimentel: 5-55 Protocol
Ultrasound-guided PENS protocol applying a 100 Hz stimulation for 5 s followed by 55 s of rest, repeated five times. The intensity is adjusted to a tolerable tingling sensation, below the pain threshold.
Percutaneous electrical nerve stimulation (PENS) applied under ultrasound guidance at 100 Hz for 5 seconds, followed by 55 seconds of rest, repeated five times. The current intensity is adjusted to elicit a mild tingling sensation while remaining below the pain threshold.
Eksperimentel: HIB Protocol (High-Intensity Burst)
Ultrasound-guided PENS protocol consisting of high-intensity bursts applied bilaterally at a current intensity close to 1000 mA, repeated three times. The intensity is set individually, approaching but not exceeding the participant's tolerance threshold.
Percutaneous electrical nerve stimulation (PENS) applied under ultrasound guidance using high-intensity bursts delivered bilaterally at a current intensity close to 1000 mA, repeated three times. The stimulation intensity is individually adjusted to approach but not exceed the participant's tolerance threshold.
Andre navne:
  • High Intensity Burst
  • HIB
Sham-komparator: Placebo
Ultrasound-guided needle insertion at the same anatomical location without electrical stimulation. The device is manipulated to simulate treatment, but no current is delivered.
A sham PENS procedure involving ultrasound-guided needle insertion at the same anatomical site without electrical stimulation. The device is manipulated to simulate treatment, but no current is delivered. Participants are informed they might not feel any sensation during the session.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Changes in squat execution velocity (m/s) measured with a linear encoder
Tidsramme: pre-intervention, immediately after the intervention
pre-intervention, immediately after the intervention

Sekundære resultatmål

Resultatmål
Tidsramme
Changes in vertical jump performance (jump height) measured with the MyJump2 app.
Tidsramme: pre-intervention, immediately after the intervention
pre-intervention, immediately after the intervention
Changes in quadriceps strength measured in newtons using a force gauge
Tidsramme: pre-intervention, immediately after the intervention
pre-intervention, immediately after the intervention
Changes in muscle activation in microvolts (μV) measured via surface electromyography
Tidsramme: pre-intervention, immediately after the intervention
pre-intervention, immediately after the intervention

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. september 2026

Primær færdiggørelse (Anslået)

30. september 2026

Studieafslutning (Anslået)

30. september 2026

Datoer for studieregistrering

Først indsendt

13. juli 2026

Først indsendt, der opfyldte QC-kriterier

17. juli 2026

Først opslået (Faktiske)

22. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

22. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • CBAS-2023-19

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