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September 10, 2025

The Mobile Constant, a Self-Reported Method for Shoulder Function Evaluation: Development and Validation Study (Preprint)

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Authors

JFJingyuan FanSun Yat-sen UniversityTZTao ZhangNanjing UniversityFGFanbin GuSun Yat-sen University

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Overview

Development of a mobile system for objective shoulder function evaluation shows substantial reliability with human raters.

Key Points

  • The Mobile Constant system demonstrated substantial agreement with human raters for shoulder function assessment, enhancing remote monitoring capabilities.
  • Reliability metrics for the Mobile Constant system included κ coefficients from 0.498 to 0.819 and ICCs from 0.898 to 0.956 during internal validation.
  • The assessment integrated symptom questionnaires, range-of-motion analysis, and strength testing using inertial sensors and movement images.
  • Data from 141 patients indicated the k-nearest neighbors model was particularly reliable, achieving a κ coefficient of 0.707 in internal validation.

Cite This Study

Fan et al. (2024) studied this question.

synapsesocial.com/papers/68c199ee9b7b07f3a061bbefhttps://doi.org/10.2196/preprints.63308
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The Mobile Constant, a Self-Reported Method for Shoulder Function Evaluation: Development and Validation Study2025
  2. 2Psychometric Properties of a Smartphone Application for Measuring Shoulder Active Range of Motion in Individuals with and Without Shoulder Pain and Mobility Deficits [Letter]2026
  3. 3Psychometric Properties of a Smartphone Application for Measuring Shoulder Active Range of Motion in Individuals with and without Shoulder Pain and Mobility Deficits2026 · 3 citations
  4. 4The Reliability and Validity of the ArmCare Strength and Range of Motion Sensor and Mobile Application in Baseball Players2025
  5. 5Accuracy and reliability of inertial measurement units to estimate shoulder joint kinematics for clinical application: a systematic review2026