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Table 1 Characteristics of study participants

From: Evidence for disruption of diurnal salivary cortisol rhythm in childhood obesity: relationships with anthropometry, puberty and physical activity

Parameter

All (n = 57)

Obesity (n = 35)

Normal weight (n = 22)

P

Age (years)

11.50 (9.35,12.85)

11.80 (10.30,13.30)

10.85 (8.98,12.13)

0.213

Sex (boys)

41 (72%)

26 (74%)

15 (68%)

0.618

Pubertalstage

 Pre-pubertal

19/57

11/35

8/22

0.416

 Early pubertal

26/57

15/35

11/22

 Late pubertal

12/57

9/35

3/22

BMI z-score

2.41 (−0.01,3.48)

3.21 (2.69,3.71)

− 0.27(− 0.88,0.35)

< 0.001

FM (%)

 Boys

36.80 (20.10,43.50)

40.15 (36.33,45.20)

12.20 (9.40,21.20)

< 0.001

 Girls

28.85 (16.85,39.58)

38.30 (33.35,45.95)

16.70 (11.00,20.00)

< 0.001

 WHtR

0.59 (0.41,0.63)

0.62 (0.59,0.66)

0.41 (0.38,0.42)

< 0.001

Sleep duration (hours)

8.93 ± 0.86

8.78 ± 0.91

9.15 ± 0.75

0.129

MVPA (minutes)

71.43 (40.71,106.70)

54.83 (34.67,103.80)

77.86 (53.93,139.29)

0.135

Non-screen SB (minutes)

240.79 ± 102.25

210.28 ± 96.88

286.56 ± 94.46

0.006

Screen time (minutes)

34.29 (11.40,120.00)

51.40 (12.15,128.60)

17.14 (3.21,45.21)

0.016

  1. Data are reported as the median (interquartile range) and the Mann–Whitney U-test was used or the mean ± standard deviation and the t-test was used. P: obesity group vs normal weight group. BMI z-score body mass index z-score, FM fat mass, WHtR waist-to-height ratio, MVPA moderate to vigorous physical activity, SB sedentary behaviour