Neuromodulation in Professional Dancers

NCT ID: NCT03596216

Last Updated: 2019-11-05

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 51 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2018-07-24
• Study Completion Date: 2018-08-17

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

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Percutaneous Electrial Stimulation (PES group).

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

Group Type: EXPERIMENTAL

PENS

Intervention Type: 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.

Transcutaneous Electrial Stimulation (TENS group)

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

Group Type: EXPERIMENTAL

TENS

Intervention Type: 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.

Interventions

PENS

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.

Intervention Type: OTHER

TENS

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.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

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

Exclusion Criteria

• 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.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: Yes

Sponsors

University of Seville

OTHER

Sponsor Role: lead

Responsible Party

Blanca de la Cruz Torres

Doctor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Blanca De la Cruz Torres, Dr

Role: STUDY_CHAIR

University of Seville

Locations

Blanca de La Cruz Torres

Seville, , Spain

Countries

Spain

References

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.

Reference Type: BACKGROUND

PMID: 31448488 (View on PubMed)

Other Identifiers

NM

Identifier Type: -

Identifier Source: org_study_id