Table 2 Reproducibility analysis results.

From: Equations for smartphone prediction of adiposity and appendicular lean mass in youth soccer players

Variables

Median values (1st–3rd quartile)

RMSE

RMS-CV (%)

SEM (%)

SDC

Arm circumference (cm)

28.3 (26.4–30.5)

0.7

1.8

1.8

1.4

Thigh circumference (cm)

44.3 (42.7–46.3)

1.3

2.0

2.0

2.5

Calf circumference (cm)

35.6 (34.3–36.7)

0.6

1.2

1.2

1.2

Waist circumference (cm)

83.3 (80.0–86.2)

3.1

2.6

2.6

6.0

Hip circumference (cm)

99.5 (95.1–103.4)

3.4

2.3

2.4

6.6

Body surface area (m2)

1.73 (1.58–1.85)

0.03

1.08

1.16

0.06

Fat mass (%)

17.8 (16.1–27.5)

1.7

5.2

6.7

3.3

Fat mass (kg)

12.9 (10.9–15.6)

1.0

5.2

5.4

1.9

Total lean mass (kg)

52.9 (41.6–60.5)

1.0

1.6

1.3

1.9

Appendicular lean mass (kg)

18.4 (15.5–21.3)

0.3

1.1

1.2

0.6

  1. RMSE root mean square error, RMS-CV root mean square coefficient of variation, SEM standard error of measurement, SDC smallest detectable change.
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