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Publication Date

2026

Presentation Length

Poster/Gallery presentation

College

College of Pharmacy & Health Sciences

Department

Occupational Therapy, School of

Student Level

Graduate

Faculty Mentor

Dr. Debra Gibbs

Presentation Type

Poster

Summary

Smartphone use among university students in the United States is steadily increasing. Longer duration of smartphone use has been associated with increased risk of smartphone addiction, reduced musculoskeletal strength, and engagement in meaningful activities. While prior research has examined these variables separately, limited evidence exists on the associations between smartphone use, hand grip and pinch strength, and extracurricular and leisure activities among U.S. university students. To address this gap, a correlational study was conducted using the Spearman rank correlation to analyze the relationship between phone use, activity participation, and hand strength. A Qualtrics survey including demographic information, phone usage, and activity participation was administered. Hand grip and pinch strength were also measured following the American Society of Hand Therapists (ASHT) protocol. Participants were undergraduate and graduate students (n=166) at Belmont University who used an iPhone as their primary form of communication. Results revealed that sports participation was positively associated with all hand strength measures, whereas participation in arts and crafts showed significant negative associations across all measures. The combination of phone use and sports interaction was a negative predictor of right-hand pinch strength, suggesting that among sports participants, greater phone use was associated with lower right-hand pinch strength to a greater degree than among non-sports participants. These results indicate that participation in activities may have a stronger impact on hand strength than smartphone use alone, stressing the importance of factoring in the combined effects of phone use, physical activity, and leisure occupations when examining musculoskeletal outcomes in university students.

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