Table 2: Characteristics of the study population.
(a)   

N = 92“Nonoverweight”“Overweight”P values
n = 37n = 55

Anthropometry
Age (y) P = 0.04
Height-SDS P = 0.26
Weight-SDS P ≤ 0.001
BMI-SDS P ≤ 0.001
BMI P ≤ 0.001
Sex (boys/girls) ♂37.84%, ♀62.16%♂36.36 %, ♀63.64 %

Age in years, height-SDS, weight-SDS, Body-Mass-Index-Standard Deviation Score and BMI expressed as mean ± standard deviation. Sex (boys and girls) was expressed in percentage.
(b)   

N = 92“Nonoverweight”“Overweight”
n = 37n = 55

Activitya (min)WDWEWDWE

 Passive time329.5 (300; 395)**349.7 (299; 399)400.5 (362; 441)390.7 (307; 468)
 Active time
510.5 (445; 540)**490.3 (441; 540)
439.5 (399; 478)449.2 (372; 533)

Activity levels (min)
  “rest” 327 (274; 383)**341.0 (287; 401)*417.2 (265; 468)390.0 (298; 457)
  “low” 270.5 (236; 300)*252.2 (202; 284)244.6 (210; 275)243.7 (214; 284)
  “moderate” 155.5 (134; 193)**168.5 (134; 196)129.3 (99; 150)144.2 (105; 194)
  “high”67.3 (42; 102)*69.3 (42; 99)*44.2 (26; 76)51.0 (28; 81)

Screen-Time hoursbWDWEWDWE
 TV (>60 min/day)38.24%*58.82%*80%85.29%
 PC (>60 min/day)2.94%**2.94%**37.14%40%
 Games (>60 min/day)0%**2.94%**23.53%44.12%

Spare-Time activityc
 Homework (>60 min/day)11.76%*35.48%
 Sports club member70.59%57.58%
 Sports club (>3 days/wk)28.0%*0%
 Outdoor sports (>6 days/wk)47.06%*28.13%

WD: weekday, WE: weekend. Daily activity time in minutes expressed as median (25th percentile; 75th percentile). Differences were significant (U-Test) between weight classes (**P < 0.001, *P < 0.05).
Screen-time entertainment (more than 60 min/day) in percent (%) for television (TV), computer (PC), and computer games (Games). Differences were significant (Chi-square test) between weight classes (**P < 0.001, *P < 0.05).
Spare time activity. Homework more than 60 min/day, Sports club membership, more than 3 sports club sessions per week. Outdoor: “how often does your child play outside per week?” (more than 6 times/week). Differences were significant (Chi-square test) between weight classes (**P < 0.001, *P< 0.05).