Samenvatting

Introduction: Body composition and body circumferences are tools for health professionals to predict health risks and to evaluate a patient’s treatment. The BODPOD® is a validated device to determine body composition, but it is expensive and therefore not accessible for a lot of health professionals. Manual anthropometry is used to determine body circumferences. Suspected is that these measurements can be replaced with 3D scanning. Microsoft’s Kinect is a device that is able to compose 3D models when combined with the right software. This study poses to validate the Microsoft Kinect combined with Artec Studio 9 and to determine user friendliness.
Methods: Literature research was done to discover the possibilities of the Microsoft Kinect. Findings were that resolution and calibration might be a problem in composing proper 3D models. Compared to other 3D scanning devices, the Kinect was assessed as being promising. The literature search led to the methods for the validation study. 25 volunteers were measured with the Kinect and the comparison method (BODPOD® and manual anthropometry). Artec was used to create the 3D models to take measurements. IBM SPSS Statistics 20 was used to compare both methods, using the Paired Samples T-test, the Intraclass Correlation Coefficient and Bland Altman plots.
User friendliness was determined using three variables: the time scanning took, what amount of scans was needed and how much time adjusting the 3D-models took.
Results: The two methods showed significant difference (p <0,001) for all variables with the Paired Samples T-test. Correlation was positive for all variables, variating between 0,366 for upper arm circumference and 0,902 for length. This suggests that the arm circumference measurement is most influenced by noise and length least. The Bland Altman plots showed no proportional or fixed biases. It took about 5 minutes to make a proper scan in on average 1,89 scan attempts. Adjusting and measuring the model took approximately 15 minutes.
Conclusion: The tested method is not applicable for health professionals. The Kinect combined with Artec is, though it is user friendly, not a valid alternative to replace the comparison method. Recommended is to retest the procedure with different software and to retest for reliability too.