Infrared Laser and Classical Ballerinas' Feet

NCT04489784 | Completed DMC

• 1 other identifier: Ballet
• Study Type: interventional
• Target: 8
• Locations: 1 country
• Sites: 1

Brief Summary

Overuse injuries and painful symptoms in athletes and dancers (especially classical ballerinas) may lead to reduced functional performance. However, laser application may reduce pain and increase physical conditioning. The aim of the current study was to evaluate the immediate and long-term effects of infrared laser on classical ballerinas' feet. The hypothesis investigators was that the infrared laser would be able to reduce pain perception and enhance functional performance in ballerinas.

Conditions

Pain

Keywords

Pain; Feet; Ballerinas

Outcome Measures

Primary Outcomes (2)

• Analysis of pain for feet by algometry

  Pressure pain thresholds (PPT) were assessed with an electronic algometer. The pressure was applied and the ballerinas were instructed to ask to say "stop" when the sensation changed from pressure to pain. Three PPT measurements were performed to obtain an average.

  3 months

• Analysis of pain for feet by the visual analogue pain intensity scale

  A continuous scale comprised of a horizontal line with 10 centimeters in length was used. All ballerinas were instructed to make a mark with a pen at any point on the line between 2 verbal descriptors, one for each symptom extreme \["No pain" (score=0) and "as bad as it could be" or "worst imaginable pain" (score=10)\].

  3 months

Secondary Outcomes (2)

• Balance Test

  3 months

• Thermal Analysis

  3 months

Study Arms (1)

Treatment

EXPERIMENTAL

Laser treatment on ballerina's feet.

Device: Infrared Laser

Interventions

Infrared Laser DEVICE

An aluminum gallium arsenide (AlGaAs) diode laser device (Twin laser, MMOptics, São Carlos, SP, Brazil) was used. The irradiation parameters were as follows: infrared laser (808 nm wavelength) with a spot area of 0.04 cm2, and an average optical power of 100 mW operated in a continuous mode during 1 minute per point, leading to an irradiance of 2,500 mW/cm2, energy of 6 J and fluence of 125 J/cm2 per point. The laser was applied on ballerina's feet twice a week during three months.

Treatment

Eligibility Criteria

• Age: 18 Years - 25 Years
• Sex: female
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• \- Female adults who perform classical ballet training and feel pain in their foot

You may not qualify if:

• \- The occurrence of injuries in the last 6 months

Sponsors & Collaborators

• University of Sao Paulo: lead

Study Sites (1)

Fernanda Rossi Paolillo

São Carlos, São Paulo, 13569600, Brazil

Location

Related Publications (4)

• Leal Junior EC, Lopes-Martins RA, Rossi RP, De Marchi T, Baroni BM, de Godoi V, Marcos RL, Ramos L, Bjordal JM. Effect of cluster multi-diode light emitting diode therapy (LEDT) on exercise-induced skeletal muscle fatigue and skeletal muscle recovery in humans. Lasers Surg Med. 2009 Oct;41(8):572-7. doi: 10.1002/lsm.20810.

  PMID: 19731300 BACKGROUND

• Paolillo FR, Paolillo AR, Joao JP, Frasca D, Duchene M, Joao HA, Bagnato VS. Ultrasound plus low-level laser therapy for knee osteoarthritis rehabilitation: a randomized, placebo-controlled trial. Rheumatol Int. 2018 May;38(5):785-793. doi: 10.1007/s00296-018-4000-x. Epub 2018 Feb 26.

  PMID: 29480363 BACKGROUND

• Adabbo M, Paolillo FR, Bossini PS, Rodrigues NC, Bagnato VS, Parizotto NA. Effects of Low-Level Laser Therapy Applied Before Treadmill Training on Recovery of Injured Skeletal Muscle in Wistar Rats. Photomed Laser Surg. 2016 May;34(5):187-93. doi: 10.1089/pho.2015.4031. Epub 2016 Apr 8.

  PMID: 27058781 BACKGROUND

• Shah S. Determining a young dancer's readiness for dancing on pointe. Curr Sports Med Rep. 2009 Nov-Dec;8(6):295-9. doi: 10.1249/JSR.0b013e3181c1ddf1.

  PMID: 19904068 BACKGROUND

MeSH Terms

Conditions

Pain

Condition Hierarchy (Ancestors)

Neurologic Manifestations; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Model Details: To evaluate the immediate and long-term effects of infrared laser on classical ballerinas' feet.

Study Record Dates

• First Submitted: July 20, 2020
• First Posted: July 28, 2020
• Study Start: January 1, 2018
• Primary Completion: March 1, 2018
• Study Completion: July 1, 2018
• Last Updated: July 28, 2020

Record last verified: 2020-07

Data Sharing

• IPD Sharing: Will not share

Locations

BR (1)