“Obese Equals Lazy?” Analysis of the Association between Weight Status and Physical Activity in Children

Table 2

Characteristics of the study population.

(a)   

N = 92	“Nonoverweight”	“Overweight”	P values
	n = 37	n = 55
Anthropometry
Age (y)	8.77±0.92	9.28±1.2	P = 0.04
Height-SDS	0.47±0.95	0.99±1.16	P = 0.26
Weight-SDS	0.13±0.56	2.06±0.61	P ≤ 0.001
BMI-SDS	−0.13±0.57	2.08±0.56	P ≤ 0.001
BMI	16.2±1.2	24.6±2.91	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 = 37		n = 55
Activity^a (min)	WD	WE	WD	WE
Passive time	329.5 (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 hours^b	WD	WE	WD	WE
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 activity^c
Homework (>60 min/day)	11.76%*		35.48%
Sports club member	70.59%		57.58%
Sports club (>3 days/wk)	28.0%*		0%
Outdoor sports (>6 days/wk)	47.06%*		28.13%

aWD: 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).
bScreen-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).
cSpare 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).