Abstract
Objective: To assess the convergent validity and reliability of joint angle measurements from a new video goniometer iPhone/iPad application (app) separately in adults, older and young children.
Design: Cross-sectional.
Setting: Childcare and university environments.
Participants: Fifty-four adults ( M = 22.5±4.5 years); 20 older children ( M = 10.9±2.2 years); twenty younger children ( M = 1.6±0.8 years).
Interventions: Adults and older children performed only a functional activity protocol.
Main Outcome Measures: Joint angle measurements using the app were validated against a commercially validated 2-D goniometric software program. In addition, validity of the app was compared to a standard mechanical goniometer for the measurement of angles drawn on a white board. Intra- and inter-rater reliability were assessed through independent re-scoring of videos.
Results: Correlations between joint angle estimates obtained from the app and goniometer software or a mechanical goniometer were positive and very strong ( r >.900; p >.0001). The intraclass correlation coefficient (ICC) for repeated scoring from the app indicated excellent intra- and inter-rater reliability (ICC> .900).
Conclusions: High correlations for repeated measures adn comparison to gold standard angle measurement instruments suggest that the new app is a valid and reliable tool for assessing joint angles during functional activity. This tool may provide clinicians an inexpensive yet accurate method for quantification of movement and immediate feedback on range of motion during tasks in a natural environment.
| Original language | American English |
|---|---|
| Journal | Archives of Physical Medicine and Rehabilitation |
| Volume | 101 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2020 |
| Externally published | Yes |
Keywords
- range of motion
- rehabilitation
EGS Disciplines
- Rehabilitation and Therapy