Frontiers in public health · 2026
A double-edged sword: unpacking the functional heterogeneity of mobile social media use and its differential associations with exercise identity and social-media-specific sedentary time among older adults.
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Liu Ningning, Zhang Guofeng, Han Xiaoyuan, Gai Ning, Gao Yuan, Wang Wenjun, Yao Xue
Аннотация
BACKGROUND: As digital life prevails among older adults, this study investigates how mobile social media functions affect their exercise identity and social-media-specific sedentary time.
METHODS: Using the S-O-R framework, a dual-path model was tested with SEM (AMOS 20.0) on data from 452 older adults in China.
RESULTS: Overall, mobile social media functions were not significantly associated with exercise identity or social-media-specific sedentary time. However, specific functions showed divergent effects: information retrieval (Z = 6.06, 95% CI [0.14, 0.27]), online guidance (Z = 3.32, 95% CI [0.08, 0.57]), and social comparison (Z = 2.44, 95% CI [0.05, 0.30]) positively predicted exercise identity, whereas video media and personalized algorithms negatively predicted exercise identity (Z = -1.32, 95% CI [-0.57, -0.04]) and positively predicted social-media-specific sedentary time (Z = 2.42, 95% CI [0.17, 1.01]). Perceived value mediated the effects of attention and interaction (Z = 2.56, 95% CI [0.009, 0.05]) and recording (Z = 3.30, 95% CI [0.03, 0.12]) on exercise identity. Immersive experience mediated the effect of video media and personalized algorithms on social-media-specific sedentary time (Z = 1.41, 95% CI [0.006, 0.19]).
CONCLUSION: Mobile social media exerts dual effects on older adults' exercise identity. Video media and personalized algorithms are key risk factors for social-media-specific sedentary time, while perceived value and immersive experience mediate distinct pathways.
METHODS: Using the S-O-R framework, a dual-path model was tested with SEM (AMOS 20.0) on data from 452 older adults in China.
RESULTS: Overall, mobile social media functions were not significantly associated with exercise identity or social-media-specific sedentary time. However, specific functions showed divergent effects: information retrieval (Z = 6.06, 95% CI [0.14, 0.27]), online guidance (Z = 3.32, 95% CI [0.08, 0.57]), and social comparison (Z = 2.44, 95% CI [0.05, 0.30]) positively predicted exercise identity, whereas video media and personalized algorithms negatively predicted exercise identity (Z = -1.32, 95% CI [-0.57, -0.04]) and positively predicted social-media-specific sedentary time (Z = 2.42, 95% CI [0.17, 1.01]). Perceived value mediated the effects of attention and interaction (Z = 2.56, 95% CI [0.009, 0.05]) and recording (Z = 3.30, 95% CI [0.03, 0.12]) on exercise identity. Immersive experience mediated the effect of video media and personalized algorithms on social-media-specific sedentary time (Z = 1.41, 95% CI [0.006, 0.19]).
CONCLUSION: Mobile social media exerts dual effects on older adults' exercise identity. Video media and personalized algorithms are key risk factors for social-media-specific sedentary time, while perceived value and immersive experience mediate distinct pathways.