Effect of Light Emitting Diode Therapy on Muscle Fatigue

Cairo University30 enrolled

Overview

The purpose of this study is to determine the optimal time interval between light emitting diode application and exercise to improve fatigue resistance.The results of this study could be useful in planning a rehabilitation program in musculature disorders and also in athletic training.

1. To determine the effect of light emitting diode applied 5 minutes before exercise on pain, rate of perceived exertion and maximum voluntary contraction. 2. To determine the effect of light emitting diode applied 1 hour before exercise on pain, rate of perceived exertion and maximum voluntary contraction. 3. To determine the effect of light emitting diode applied 5 hours before exercise on pain, rate of perceived exertion and maximum voluntary contraction. 4. To determine the difference between light emitting diode applied 5 minutes,1 hour or 5 hours before exercise on pain, rate of perceived exertion and maximum voluntary contraction.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Enrollment

Conditions

Muscle Fatigue

Interventions

Light emitting diodeDEVICE

Light emitting diode at a wavelength of 890 nm is produced by an array of 60 gallium aluminum arsenide light-emitting diodes located on flexible pads and the near infrared photo energy is delivered in a noninvasive, drug-free manner

Eligibility

Sex: ALLMin age: 20 YearsMax age: 40 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Healthy non athletics subjects. * Age ranges from 20-40 years. * Body mass index is less than 25 kg/m 2 Exclusion Criteria: * Neurological deficit and recent injury to either upper extremity * non diagnosed pain . * Contraindications to LED irradiation (such as light hypersensitivity, fluctuating blood pressure, insufficient blood circulation, fever and inflammation of the skin) * Conditions in which physical exertion is contraindicated (such as cardiovascular deficits, hypertension and respiratory problems) * Restriction in shoulder or elbow range of motion; * Neoplasm, * Rheumatoid, * Strength training in the past 6 months; * Previous surgery in the spine or upper extremity; * Complaints of pain in the shoulder, elbow,wrist, and trunk musculature system; * Use of dietary supplements; and not in any other exercise program for at least the past 3 months.

Locations (1)

Faculty of Physical Therapy

Cairo, Egypt

Outcomes

Primary Outcomes

Isometric peak torque of elbow flexors

metric unit is Newton

Time frame: change from before light emitting diode application at 5 minutes, 1 hour and 5 hours

Isometric peak torque of elbow flexors

metric unit is Newton

Time frame: change from before light emitting diode application at1 minute

Isokinetic peak torque of elbow flexors

Metric unit is Newton and at angular velocity 60

Time frame: change from before light emitting diode application at 5 minutes, 1 hour and 5 hours

Isokinetic peak torque of elbow flexors

Metric unit is Newton and at angular velocity 60

Time frame: change from before light emitting diode application at 1 minute after light emitting diode application

Data from ClinicalTrials.gov

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