Title

The Reliability of the Styku 3D Body Scanner

Presenting Author Name/s

Blair Silver

Faculty Advisor

Patrick Wilson

Presentation Type

Poster

Disciplines

Exercise Science

Description/Abstract

PURPOSE: Waist and hip circumferences are predictors of cardiometabolic health. However, measurements made with a tape measure may lead to more measurement error, especially when different technicians conduct repeat measurements. This study assessed the reliability of the Styku 3D body scanner, as well as determined the smallest change between measurements that’s likely to represent real changes in circumferences.

METHODS: Twenty-one subjects (13 female, 8 male) completed four scans over two visits. On visit one, two scans were performed to assess within-day reliability. The process was repeated on visit two, and the values obtained on the two separate visits were used to examine between-day reliability. Intra-class correlation coefficients (ICC) were used to examine the reliability between the two scans on visit one, and between the first scans on visits one and two. Minimal detectable change values at a 90% confidence interval (MDC90) were calculated: 1.645 × SD × √(2 [1 – ICC]).

RESULTS: A high degree of reliability was observed for within-day waist circumference measures (ICC=.997), for within-day hip circumference measures (ICC=.995), for between-day waist circumference measures (ICC=.988), and for between-day hip circumference measures (ICC=.987). The corresponding MDC90 values were 0.347, 0.482, 0.694, and 0.778 inches, respectively.

CONCLUSIONS: The Styku 3D body scanner is a reliable method of measuring waist and hip circumferences. In practical terms, a change of at least 0.35-0.78 inches between measurements is needed to be confident that a real change has occurred.

Session Title

Poster Session

Location

Learning Commons, Northwest Atrium

Start Date

2-2-2019 8:00 AM

End Date

2-2-2019 12:30 PM

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Feb 2nd, 8:00 AM Feb 2nd, 12:30 PM

The Reliability of the Styku 3D Body Scanner

Learning Commons, Northwest Atrium

PURPOSE: Waist and hip circumferences are predictors of cardiometabolic health. However, measurements made with a tape measure may lead to more measurement error, especially when different technicians conduct repeat measurements. This study assessed the reliability of the Styku 3D body scanner, as well as determined the smallest change between measurements that’s likely to represent real changes in circumferences.

METHODS: Twenty-one subjects (13 female, 8 male) completed four scans over two visits. On visit one, two scans were performed to assess within-day reliability. The process was repeated on visit two, and the values obtained on the two separate visits were used to examine between-day reliability. Intra-class correlation coefficients (ICC) were used to examine the reliability between the two scans on visit one, and between the first scans on visits one and two. Minimal detectable change values at a 90% confidence interval (MDC90) were calculated: 1.645 × SD × √(2 [1 – ICC]).

RESULTS: A high degree of reliability was observed for within-day waist circumference measures (ICC=.997), for within-day hip circumference measures (ICC=.995), for between-day waist circumference measures (ICC=.988), and for between-day hip circumference measures (ICC=.987). The corresponding MDC90 values were 0.347, 0.482, 0.694, and 0.778 inches, respectively.

CONCLUSIONS: The Styku 3D body scanner is a reliable method of measuring waist and hip circumferences. In practical terms, a change of at least 0.35-0.78 inches between measurements is needed to be confident that a real change has occurred.