Muscle Fatigue
Conditions
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.
Interventions
DEVICELight emitting diode
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
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
20 Years to 40 Years
Healthy volunteers
Yes
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.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Isometric peak torque of elbow flexors | change from before light emitting diode application at 5 minutes, 1 hour and 5 hours | metric unit is Newton |
| Isokinetic peak torque of elbow flexors | change from before light emitting diode application at 5 minutes, 1 hour and 5 hours | Metric unit is Newton and at angular velocity 60 |
Countries
Egypt
Outcome results
None listed