Neuromodulation in Professional Dancers

NCT03596216 | Completed

• 1 other identifier: NM
• Study Type: interventional
• Target: 51
• Locations: 1 country
• Sites: 1

Brief Summary

Tendinopathy of the flexor hallucis longus (FHL), colloquially referred to as "dancer's tendinitis," is a common condition in dancers and attributed to high demand on this muscle in positions of extreme ankle plantarflexion and metatarsophalangeal (MTP) flexion and extension. Tradicional conservative treatment includes rest from pain-inducing activities including pointe work and jumping, physical therapy a focusing on movilization of the joints of the first ray and subtalar joint, and antiinflamatory medications. Unfortunately, dancer frecuently do not follow recommendations to rest due to the competitive nature of the field. Those who do not respond to conservative treatment undergo more serious interventions including steroid injections or surgery, each with additional risks and recovery time. To develop experimental protocols aimed at prevention and nonsurgical interventions are needed. Therefore, the aim of this study was To investigate the effects of one shot of low-frequency percutaneous electrical nerve stimulation (PENS) vs. one shot of transcutaneous electrical nerve stimulation (TENS) in performance of the Flexor Hallucis Longus muscle in young dancers.

Conditions

Rehabilitation; Sports Physical Therapy; Sport Performance; Dance

Outcome Measures

Primary Outcomes (3)

• Change in balance

  Assessed by a single leg balance test

  1 day

• Change in muscular endurence,

  Assessed by endurance test (heel raise repetitions).

  1 day

• Change in range of motion of first MTF joint

  Assessed using goniometer.

  1 day

Study Arms (2)

Percutaneous Electrial Stimulation (PES group).

EXPERIMENTAL

This intervention consisted in the application of an asymmetric biphasic rectangular current. The subject lay prone with her feet outside the table. The FHL muscle was located at 50% of the distance between the fibular head and inferior border of the lateral malleolus on the posterior aspect of the fibular by ultrasound machine (cross-section) (Logiq, GE Healthcare, USA) and then, a needle (0.30mm x 0.40mm) was inserted, perpendicular to the surface of the skin, until the muscle belly. Prior to inserting a neddle, the underlying skin was cleaned with isopropyl alcohol. The intensity of the current was necessary to cause an exacerbated muscle contraction, during 1.5 min acording to the Valera and Minaya protocol´s. This intervention was performed once in each participant, on one leg only (stance limb), It's only once, it was not a treatment

Other: PENS

Transcutaneous Electrial Stimulation (TENS group)

EXPERIMENTAL

This intervention consisted in the application of an asymmetric biphasic rectangular current. The subject lay prone with her feet outside the table. The FHL muscle was located at 50% of the distance between the fibular head and inferior border of the lateral malleolus on the posterior aspect of the fibular by ultrasound machine (cross-section) (Logiq, GE Healthcare, USA),and then, one self-adhesive electrode was placed on the back of the leg and the other on the sole of the foot. The intensity of the current was necessary to cause an exacerbated muscle contraction, during 1.5 min. This intervention was performed once in each participant, on one leg only (stance limb), It's only once, it was not a treatment

Other: TENS

Interventions

PENS OTHER

This intervention consisted in the application of an asymmetric biphasic rectangular current of 150 microseconds and 10 Hz using a specifically developed medically certified device (Physio Invasive, Enraf Nonius, Prim, SPAIN). This is an invasive intervention by ultrasound and needles.

Percutaneous Electrial Stimulation (PES group).

TENS OTHER

This intervention consisted in the application of an asymmetric biphasic rectangular current of 150 microseconds and 10 Hz using a specifically developed medically certified device (Physio Invasive, Enraf Nonius, Prim, SPAIN). This is a non-invasive intervention by self-adhesive electrodes.

Transcutaneous Electrial Stimulation (TENS group)

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Female dancers
• Training at least twenty-five hours per week
• Pointe training at least five hours per week.

You may not qualify if:

• They had sustained an injury to their stance limb in the past year preventing dancing for at least 1 day
• Personal Psychological Apprehension Scale (PPAS) score \>37.5
• Commonly accepted contraindications to invasive phsyiotherapist technique
• Any contraindications to needling per se.
• Commonly accepted contraindications to electrotherapy
• Epilepsy.

Sponsors & Collaborators

• University of Seville: lead

Study Sites (1)

Blanca de La Cruz Torres

Seville, 41010, Spain

Location

Related Publications (1)

• de-la-Cruz-Torres B, Barrera-Garcia-Martin I, Romero-Morales C. Comparative Effects of One-Shot Electrical Stimulation on Performance of the Flexor Hallucis Longus Muscle in Professional Dancers: Percutaneous Versus Transcutaneous? Neuromodulation. 2020 Aug;23(6):865-870. doi: 10.1111/ner.13040. Epub 2019 Aug 25.

  PMID: 31448488 BACKGROUND

MeSH Terms

Interventions

Transcutaneous Electric Nerve Stimulation

Intervention Hierarchy (Ancestors)

Electric Stimulation Therapy; Therapeutics; Physical Therapy Modalities; Rehabilitation; Analgesia; Anesthesia and Analgesia

Study Officials

• Blanca De la Cruz Torres, Dr

  University of Seville

  STUDY CHAIR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Doctor

Study Record Dates

• First Submitted: July 11, 2018
• First Posted: July 23, 2018
• Study Start: July 24, 2018
• Primary Completion: July 24, 2018
• Study Completion: August 17, 2018
• Last Updated: November 5, 2019

Record last verified: 2019-11

Locations

ES (1)