Neuromotor Development of Children Aged 6 and 7 Years Born before the 30th Week Gestation

Table 5

Muscle tone.

Muscle tone	Study group				Control Group
	Optimal	Medium	Weak	Lack of skills	Optimal	Medium	Weak	Lack of skills
Manipulation of the right and left shoulders
N	5	28	5	2	39	1	0	0	<0,001
%	13%	70%	13%	5%	98%	3%	0%	0%
Manipulation of the right and left hips with extended knees
N	3	24	10	3	37	3	0	0	<0,001
%	8%	60%	25%	8%	93%	8%	0%	0%
Manipulation of the right and left ankles (dorsal flexion)
N	6	19	12	3	35	5	0	0	<0,001
%	15%	48%	30%	8%	88%	13%	0%	0%
Ability to reach the toes with the fingers while standing with extended knees
N	6	15	10	9	33	7	0	0	<0,001
%	15%	38%	25%	23%	83%	18%	0%	0%
Ability to rotate the trunk while sitting
N	14	20	3	3	39	0	0	0	<0,001
%	35%	50%	8%	8%	100%	0%	0%	0%
Ability to squat down with the heels on the floor
N	5	18	12	5	35	5	0	0	<0,001
%	13%	45%	30%	13%	88%	13%	0%	0%

%: percent of tested subjects; N: number of tested subjects; p: test probability value.