Evaluating Lazy Glasses on Body Posture, Level of Physical Activity, and Ocular Discomfort toward TikTok Mobile Application Use for Students
Keywords:
TikTok, lazy glasses, motion capture, body discomfort, eye discomfortAbstract
Indonesia is among the countries with the largest number of TikTok users worldwide, with a difference of about 3.52 million users compared to the country ranked first. The widespread use of smartphones for social media activities may influence users’ body posture and visual comfort. This study examined the effect of using lazy glasses on body posture and eye discomfort while operating the TikTok application on a smartphone in sitting and lying positions. Ten university students (mean ± SD age = 23.4 ± 0.97 years) participated in the experiment. Four experimental conditions were evaluated: lying without lazy glasses (WOLZB), lying with lazy glasses (LZB), sitting without lazy glasses (WOLZD), and sitting with lazy glasses (LZD). Body segment angles and perceived discomfort were analyzed for each condition. The results showed that LZD tended to produce smaller neck angles, while WOLZD resulted in smaller angles in the left elbow. Higher discomfort in the head and neck regions was observed in WOLZD, whereas LZD tended to increase pressure around the eyes. Overall, lazy glasses may reduce physical discomfort in certain viewing positions but do not always produce the most neutral posture.
References
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Chen, Y. L., Chan, Y. C., & Alexander, H. (2024). Gender Differences in Neck Muscle Activity during Near-Maximum Forward Head Flexion while Using Smartphones with Varied Postures. Scientific Reports, 14(1), 1–11.
Abdel, M., Mohamed, O., Abdel, M., Kamel, R. M., & Abdelhay, M. I. (2025). Efficacy of NeckMounted Lazy Holders for Smartphones on Cervical Pain and Function in Patients with NonSpecific Neck Pain. Bulletin of Faculty of Physical Therapy, 30(1).
Ashraf, S., Rani, S., & Anjum, O. (2025). Prevalence of Text Neck Posture and Its Association with Smartphone Addiction among Physical Therapy Students: A Cross-Sectional Study. Journal of Health, Wellness and Community Research, 3(16). https://doi.org/10.61919/tbzmax62
Batara, G. O., Doda, D. V. D., & Wungow, H. I. S. (2021). Keluhan Muskuloskeletal akibat Penggunaan Gawai pada Mahasiswa Fakultas Kedokteran Universitas Sam Ratulangi selama Pandemi COVID-19. Jurnal Biomedik, 13(2), 152–160.
Chen, Y., Chen, K., Cheng, Y., & Chang, C. (2022). Field Study of Postural Characteristics of Standing and Seated Smartphone Use. Musculoskeletal Science and Practice, 51. https://doi.org/10.1016/j.msksp.2020.102310
Chen, Y. L., Chan, Y. C., & Alexander, H. (2024). Gender Differences in Neck Muscle Activity during Near-Maximum Forward Head Flexion while Using Smartphones with Varied Postures. Scientific Reports, 14(1), 1–11.
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