Effect of Light Emitting Diode Therapy on Muscle Fatigue

Not Applicable

• Conditions: Muscle Fatigue
• Interventions: Device: Light emitting diode

• Registration Number: NCT04367727
• Lead Sponsor: Cairo University

Brief Summary

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.

Detailed Description

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 Timeline

• Study First Submitted: 2020-01-24
• Study First Submitted QC: 2020-04-28
• Study First Posted: 2020-04-29
• Status Verified: 2020-11
• Study Start: 2020-11-01
• Last Update Submitted: 2020-11-21
• Last Update Posted: 2020-11-25
• Primary Completion: 2021-01
• Study Completion: 2021-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 30

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.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
1 hour before 2	Light emitting diode	Light emitting diode applied 1 hour before fatiguing task
5 hours before 1	Light emitting diode	Light emitting diode applied 5 hours before fatiguing task
5 hours before 2	Light emitting diode	Light emitting diode applied 5 hours before fatiguing task
5 minutes before 2	Light emitting diode	Light emitting diode applied 5 minutes before fatiguing task
5 minutes before 1	Light emitting diode	Light emitting diode applied 5 minutes before fatiguing task
1 hour before 1	Light emitting diode	Light emitting diode applied 1 hour before fatiguing task

Primary Outcome Measures

Name	Time	Method
Isokinetic peak torque of elbow flexors	change from before light emitting diode application at 1 minute after light emitting diode application	Metric unit is Newton and at angular velocity 60
Isometric peak torque of elbow flexors	change from before light emitting diode application at1 minute	metric unit is Newton

Trial Locations

Locations (1)

Faculty of Physical Therapy; 🇪🇬 Cairo, Egypt