Study: NCT05559723

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: electromagnetic field therapy
Description: Three times a week for four weeks, the study group got electromagnetic fields (EMFs) therapy and the selected physical therapy program. The EMFs therapy was applied using an electromagnetic field therapy device (Magner Plus Astar)~. From the prone lying position the device will be adjusted around the lumbar area at a low frequency (50 Hz), with the intensity of 2.5 MT, field shape and applicator type rectangular csl60/csp60), and the application time will be10 minutes

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: selected physical therapy program
Description: in the form of~1. Hot packs will be placed paravertebral on the lumbar region for 5 minutes from a prone lying position~2. selected physical therapy exercises in form of Static exercise for back and abdominal muscles, stretching exercises for both lower limbs, 10 times each exercise

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: selected physical therapy program
Description: in the form of~1. Hot packs will be placed paravertebral on the lumbar region for 5 minutes from a prone lying position~2. selected physical therapy exercises in form of Static exercise for back and abdominal muscles, stretching exercises for both lower limbs, 10 times each exercise

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Therapeutic ultrasound therapy
Description: Therapeutic ultrasound therapy using ultrasound device Chattanooga, model 2760, serial number T11238, 120-240V, 50/60Hz, made in Mexico . That will be applied paravertebral on the lumbar region from the prone lying position, with pulsed mode, frequency 1 MHz, intensity 0.5 W/cm2 and will be applied by circular moving technique at a rate of 4 cm/s for 10 minutes.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Therapeutic ultrasound therapy
Description: Therapeutic ultrasound therapy using ultrasound device Chattanooga, model 2760, serial number T11238, 120-240V, 50/60Hz, made in Mexico . That will be applied paravertebral on the lumbar region from the prone lying position, with pulsed mode, frequency 1 MHz, intensity 0.5 W/cm2 and will be applied by circular moving technique at a rate of 4 cm/s for 10 minutes.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Transcutaneous Electrical Nerve Stimulation
Description: Transcutaneous Electrical Nerve Stimulation (TENS): from the prone lying position, the electrodes will be placed on the course of pain detected by the patient, with an asymmetrical rectangular biphasic form, at a pulse repetition frequency of 100Hz and duty cycle of 250 microseconds; the intensity was set at a level that each patient could feel, for 15 minutes .

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Transcutaneous Electrical Nerve Stimulation
Description: Transcutaneous Electrical Nerve Stimulation (TENS): from the prone lying position, the electrodes will be placed on the course of pain detected by the patient, with an asymmetrical rectangular biphasic form, at a pulse repetition frequency of 100Hz and duty cycle of 250 microseconds; the intensity was set at a level that each patient could feel, for 15 minutes .