Table 1.

Descriptive characteristics of sample (n=217)^{^}

	Baseline		Follow-up		Difference	p-value
	Mean ± SD	%	Mean ± SD	%	Mean ± SD
Age	12.9 ± 1.9		14.8 ± 2.0
Male		48.2
Race
White		58.1
African American		36.4
Other		5.5
Puberty
Pre-puberty		12.4
Peri-puberty		52.1
Post-puberty		35.5
Movement Behaviors
Sedentary time (minutes/day)	591.2 ± 72.2
LPA (minutes/day)	241.2 ± 57.6
MPA (minutes/day)	25.2 ± 12.5
VPA (minutes/day)	10.1 ± 9.7
Sleep (hours/day)	8.7 ± 1.0
Weight Status and Adiposity
BMI Percentile	68.5 ± 31.5		71.2 ± 29.6		3.2 ± 15.0	0.003*
BMI category						0.001*
Underweight		3.6		2.5
Normal		53.4		51.5
Overweight		12.2		14.5
Obesity		30.9		31.5
Visceral Adipose Tissue (kg)	0.5 ± 0.4		0.6 ± 0.5		0.1 ± 0.2	0.001*
Subcutaneous Adipose Tissue (kg)	5.0 ±4.6		5.8 ± 5.3		0.8 ± 1.7	0.001*
Total Abdominal Adipose Tissue (kg)	5.5 ±5.0		6.4 ± 5.8		0.9 ± 1.8	0.001*
Lean mass (kg)	36.7 ± 10.3		43.3 ± 10.3		6.6 ± 5.2	0.001*
Fat mass (kg)	20.8 ± 13.9		24.0 ± 16.2		3.2 ± 5.9	0.001*

Visceral Adipose Tissue, Subcutaneous Adipose Tissue, Total Abdominal Adipose Tissue, Lean Mass, and Fat mass are presented without transformation in this table.

^{^}BMI=Body Mass Index; LPA= Light Physical Activity; MPA= Moderate Physical Activity, VPA = Vigorous Physical Activity; assessed using paired t-tests and chi-square analysis

^*p<0.05