This observational cross-sectional study aims to investigate the relationship between daily smartphone usage duration and hand function parameters in young adults. Specifically, the study will examine the association between smartphone screen time and dominant hand grip strength, thumb strength, and wrist and thumb proprioception. Healthy individuals aged 18-35 years will be included. All participants will undergo a single-session assessment including measurement of smartphone usage duration, hand grip strength, pinch strength, and joint position sense of the wrist and thumb. The findings are expected to provide insight into the potential effects of prolonged smartphone use on hand function and proprioceptive performance in young adults.
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Hand Grip Strength
Timeframe: Single assessment at baseline
Thumb Pinch Strength
Timeframe: Single assessment at baseline
Thumb Active Joint Position Sense (JPS)
Timeframe: Single assessment at baseline
Wrist Joint Position Sense (JPS)
Timeframe: Single assessment at baseline