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Young adults have a high prevalence of smartphone addiction. Many adolescents use their smartphones extensively for communication, which starts out as a habit but eventually turns into an addiction. Numerous studies have shown that adolescents use social media for roughly ten hours every day.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group A (Whole body vibration group) | Experimental | Whole body vibration (WBV) group will receive vibration on the platform for 20 repetitions in 2 sets with 2 minutes rest between sets in addition to strengthening exercises to the hand muscles. |
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| Group B (Sham Whole body vibration group) | Sham Comparator | participants will receive WBV with the device turned off in addition to strengthening exercises to the hand muscles. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Whole body vibration | Device | Participants will be asked to sit on an chair without armrests close to the platform and will be asked to perform 90° shoulder flexion, bend both elbows slightly, flex the trunk forwards and place both hands on the platform. |
| Measure | Description | Time Frame |
|---|---|---|
| Hand grip strength | Participants will be asked to perform maximum hand grip with the dominant hand with hold for 5 seconds, for three repetitions using the hand held dynamometer (dynamometer, Jamar, United States), a 60 seconds rest interval will be planned in between the repetitions. The mean of the three repetitions will used for calculation of hand grip strength. | 4 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| pinch strength | The participant will be asked to sit comfortably, with the pinch gauge between the index and middle fingers, and thumb, with the tested arm at the side with the elbow flexed 90 degrees. After five seconds of holding the pinch with full force, take a reading, repeat three times. | 4 weeks |
| Muscle activity of flexor carpi radialis muscle |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculty of physical therapy | Giza | Giza Governorate | 1124 | Egypt |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 42089064 | Derived | Allam NM, Alkhaldi RA, Alshammari WZ, Salama MEM, Abed SY, Ibraheem KM, Ebrahim HA, El-Sherbiny M, Salem HE, Abdelrahman MMA, Eladl HM. Acute effect of whole-body vibration on hand grip strength, muscular activity, and upper limb function in young females with smartphone addiction: a randomized controlled trial. Front Med (Lausanne). 2026 Apr 20;13:1800879. doi: 10.3389/fmed.2026.1800879. eCollection 2026. |
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| Sham Whole body vibration | Device | Participants will receive the vibration with the device turned off. |
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| Strengthening exercises | Other | Participants will use elastic resistance for the finger extension and flexion exercises, and ball to strength wrist flexors for two sets of 10 repetitions within a training session. |
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Muscle activity will be measured utilizing electromyography (EMG) using the Delsys Trigno (DST01) system for flexor carpi radialis muscle. |
| 4 weeks |
| Muscle activity for flexor carpi ulnaris muscle | Muscle activity will be measured utilizing electromyography (EMG) using the Delsys Trigno (DST01) system for flexor carpi ulnaris muscle. | 4 weeks |
| Muscle activity for extensor digitorum communis muscle | Muscle activity will be measured utilizing electromyography (EMG) using the Delsys Trigno (DST01) system for extensor digitorum communis muscle. | 4 weeks |
| Upper limb function | The upper limb function will be assessed by using the Arms, Shoulders and Hands Disability Questionnaire (DASH) Quick, which is a validated and widely used 11-item questionnaire that evaluates certain impairments and symptoms in the upper limb. the score ranged from 0 to 100, the lower the score, the greater the results. While, higher scores represent the worst results. | 4 weeks |