Effect of smartphone addiction on hamstring flexibility and lower Extremity function | ||
| Benha International Journal of Physical Therapy | ||
| Volume 3, Issue 2, December 2025, Pages 303-311 PDF (451.19 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/bijpt.2025.433518.1124 | ||
| Authors | ||
| Sara Mohsen Abdallah* 1; Abeer Abdelrahman Yamany2; Ahmed abduallah Habib3 | ||
| 1Faculty of Physical Therapy cairo university basic science | ||
| 2Professor of Physical Therapy, Basic Science Department, Faculty of Physical Therapy, Cairo University, Giza, Egypt. | ||
| 3Basic science department, facultyof physical therapy, cairo university, Cairo,Egypt | ||
| Abstract | ||
| Background: Smart phone addiction is now a common behavioral and health concern, particularly among youngi ndividuals who use their smart phones for several hoursevery day. Long-term smart phone use leads to incorrect postures that impair lower extremity function and hamstring flexibility, such as slouched sitting and forward head positions. Purpose:The purpose of the study was to investigate the effect of smart phone addiction on hamstring flexibility and lower extremity function. Methods: Eighty participants (36 males and 44 females) aged 18 to 30 years who reported using smart phones for more than three hours per day were recruited from Nasr Al Islam Hospital, Cairo University, and the Royal Centre. Participants were randomly assigned into two equal groups: Group A (addicted users) and Group B (non-addicted users), each comprising forty subjects. The Arabic version of the Smart phone Addiction Scale–Short Version was used toassess the level of the smartphone addiction risk. The active knee extension test was used to assess hamstring flexibility. The Clinometer + Bubble Level mobile application was used to assess knee ROM. The Lower Extremity Functional Scale, Arabic version, was used to assess functional limitations. Results: The results of the present study showed a strong positive correlation was found between smart phone addiction and hamstring tightness (r = 0.753, p = 0.001), and a strong negative correlation with lower extremity function (r =-0.639, p = 0.001). Conclusion: smart phone addiction significantly impaired hamstring flexibility and lower extremity function among young adults. Participants with smart phone addiction showed more severe muscle tension and functional impairments than those without addiction. | ||
| Keywords | ||
| Hamstring flexibility; Lower extremity function; Smart phone addiction | ||
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