Table 3.

Descriptives values of the studied parameters according to sex subgroups: girls versus boys.

	Girls (N=107)	Boys (N=101)
Baseline	Mean ± SD	Mean ± SD
Age (years)	8.4 ± 1.8	8.6 ± 1.8
Puberty (M/G Tanner ≥ 2; %)	14.0	14.9
Obesity (BMI-SDS > 2; %)	20.6	19.8
Weight (kg)	36.9 ± 14.7	38.7 ± 14.8
Weight-SDS	0.79 ± 1.39	0.91 ± 1.55
Height (cm)	133.8 ± 13.2	136.6 ± 12.6
Height-SDS	0.60 ± 1.11	0.77 ± 1.16
BMI (kg/m2)	19.86 ± 4.75	20.05 ± 4.73
BMI-SDS	0.63 ± 1.37	0.67 ± 1.48
Weight-for-height (kg/m)	0.27 ± 0.08	0.28 ± 0.08
Body surface area (BSA) (m2)	1.16 ± 0.28	1.20 ± 0.28
Waist (cm)	65.7 ± 13.0	67.9 ± 13.7
Waist-to-height ratio	0.49 ± 0.07	0.49 ± 0.08
Body fat mass (kg)	13.1 ± 8.5	11.9 ± 7.9
Visceral fat (mm)	6.58 ± 2.54	6.68 ± 2.08
Triglycerides (mg/dL)	66 ± 34 ^	55 ± 35
Glucose (mg/dL)	87 ± 7	86 ± 7
Insulin (mcU/mL)	6.3 ± 5.9	4.6 ± 3.8
HOMA-IR	1.38 ± 1.12 ^	1.01 ± 0.98
hsCRP (mg/L)	2.36 ± 2.05	1.84 ± 1.71
α-Klotho (pg/mL)	2541 ± 1118 ^	2016 ± 740
Follow-up	Mean ± SD	Mean ± SD
Age (years)	12.8 ± 1.9	13.0 ± 1.9
Puberty (M/G Tanner ≥ 2; %)	78.8 *	58.2
Obesity (BMI-SDS > 2; %)	24.3	18.8
Weight (kg)	57.9 ± 19.5	60.2 ± 20.7
Weight-SDS	0.96 ± 1.58	0.76 ± 1.47
Height (cm)	156.5 ± 10.7 ^	160.2 ± 13.5
Height-SDS	0.45 ± 1.04	0.40 ± 1.04
BMI (kg/m2)	23.46 ± 6.46	22.91 ± 5.62
BMI-SDS	0.88 ± 1.68	0.65 ± 1.49
Weight-for-height (kg/m)	0.36 ± 0.11	0.37 ± 0.11
Body surface area (BSA) (m2)	1.56 ± 0.30	1.62 ± 0.34
Waist (cm)	76.7 ± 15.3	77.5 ± 15.2
Waist-to-height ratio	0.49 ± 0.08	0.48 ± 0.08
Body fat mass (kg)	29.4 ± 8.5 ^	23.4 ± 8.4
Visceral fat (mm)	7.06 ± 2.15	7.35 ± 2.05
Triglycerides (mg/dL)	70 ± 34	67 ± 37
Glucose (mg/dL)	86 ± 6	87 ± 8
Insulin (mcU/mL)	12.8 ± 7.9 ^	9.9 ± 5.1
HOMA-IR	2.71 ± 1.75 ^	2.15 ± 1.19
hsCRP (mg/L)	1.52 ± 0.78	0.99 ± 0.73

Data are shown as mean ± standard deviation (SD).

*Chi-squared test, p value < 0.05; ^T-test comparing girls versus boys, p value < 0.05.