Fig 1.
Flowchart describing the study design.
Fig 2.
The avatar (on right) and circumferences that are output from the Styku scan device software. Left and right circumference measurements were averaged for statistical analysis.
Table 1.
Table contains mean (±SD) BMI and Styku body circumferences at five different sites by cluster, sex and totals.
Waist circumference was the Styku measurement at the abdomen (labeled “I” in Fig 1) and thigh circumference was the Styku measurement at the lower thigh (labeled “F” in Fig 1). Mean (±SD) of the raw scores for each ACFT event are also provided. Finally, mean (±SD) of percent body fat in 47 participants are presented by cluster with sample sizes: Cluster 1 (13) Cluster 2 (8), Cluster 3 (10), Cluster 4 (5), and Cluster 5 (11).
Table 2.
Correlations between body height, site circumference, weight, BMI and % body fat with raw scores on the six ACFT events.
Significant correlations are denoted with asterisks at significance level *p < 0.05; **significant at p < 0.001; *** significant at p < 0.0001. Abbreviations are MDL—maximum deadlift, SPT—standing power throw, HRPU—hand-release push-up, SDC—spring drag carry, LT—leg tuck, BMI—body mass index.
Fig 3.
Standardized coefficients resulting from regression models that predict performance by event from Styku measurements.
Positive coefficients represent terms that lead to higher scores, negative coefficients represent terms that lead to lower scores. Coefficients highest in magnitude are most influential.
Table 3.
Statistically significant terms and adjusted R2 for regression model predicting event scores from Styku measured circumferences.
Additional model details are provided in the Online S6 File.
Fig 4.
Heat map of body measurements by cluster depicting the number of standard deviations from the mean value.
Red shading indicates that the value is above the mean with darker red shading corresponding to higher distance away from the mean. Similarly, green shading indicates that the value is below the mean with darker green corresponding to a higher distance away from the mean.
Fig 5.
Visual depictions and descriptions of body shape by cluster.