Table 2. Demographic characteristics of the study participants (M ± SE).

Characteristics		HFG (n = 74)	LFG (n = 60)	CG (n = 172)
Age (years)		9.59(0.13)	9.92(0.15)	9.77(0.09)
Height (cm)		138.92(0.92)	140.92(1.24)	140.80(0.76)
Gender (Number)	Male	31(20.80%)	32(21.48%)	86(57.72%)
	Female	43(27.39%)	28(17.83%)	86(54.78%)
Grade (Number)	Two	20(25.32%)	14(17.72%)	45(56.96%)
	Three	19(24.36%)	15(19.23%)	44(56.41%)
	Four	19(24.05%)	16(20.25%)	44(55.70%)
	Five	16(22.86%)	15(21.43%)	39(55.71%)