Currently submitted to: JMIR Formative Research
Date Submitted: Jun 29, 2026
Open Peer Review Period: Jun 30, 2026 - Aug 25, 2026
(currently open for review)
Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.
Feasibility, acceptability and early-phase efficacy of using digital technology to correct forward head posture during mobile phone use in young adults: a single-arm trial design
ABSTRACT
Background:
Text Neck Syndrome (TNS) is a modern musculoskeletal condition characterized by forward head posture (FHP) and neck pain caused by prolonged cervical flexion, often from extensive use of mobile devices. According to national averages, university-aged adults report screen time exceeding 8.5 hours daily.
Objective:
To investigate the early-phase efficacy of a downloadable mobile phone application (HUNCHED – your text neck solution) to correct FHP and reduce neck strain and dysfunction from excessive mobile phone use. We examined the feasibility and acceptability of using the HUNCHED app as an intervention, and the tests and measures used to determine preliminary efficacy.
Methods:
Thirty-two university-aged students participated in this 14-day single-arm intervention trial, completing 2 laboratory visits (Days 1 and 14). Outcomes included self-report questionnaires for pain, disability, and intervention acceptability, posture (forward head posture), and neck range of motion (ROM). During periods of mobile phone use postural alerts from the HUNCHED app would flash on the screen to inform the participant that their head and neck were in a risky posture.
Results:
FHP, neck pain, and disability decreased after using the HUNCHED app for 14 days. Participants also reported that the app was acceptable to use.
Conclusions:
Participants were found to have reduced FHP, neck pain, and disability after using the HUNCHED application for 14-days. Our findings highlight the feasibility of integrating digital technology (HUNCHED app) for providing augmented feedback during mobile phone use to promote healthy neck posture and prevent neck pain.
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