Table 3.
Effect of the physical education-based stretching intervention program on the proportion of children with normal hamstring extensibility. Data are reported as frequency (% total).
Experimental group 1
Experimental group 2
Control group
Post-development
Post-development
Post-development
Low
Normal
Total
Low
Normal
Total
Low
Normal
Total
Pre-intervention
Low
7 (15.9)
8 (18.2)
15 (34.1)
4 (7.8)
11 (21.6)
15 (29.4)
14 (31.1)
4 (8.9)
18 (40.0)
Normal
1 (2.3)
28 (63.6)
29 (65.9)
2 (3.9)
34 (66.7)
36 (70.6)
6 (13.3)
21 (46.7)
27 (60.0)
Total
8 (18.2)
36 (81.8)
44 (100.0)
6 (11.8)
45 (88.2)
51 (100.0)
20 (44.4)
25 (55.6)
45 (100.0)
p
a
.039
.022
.754
Post-maintenance
Post-maintenance
Post-maintenance
Low
Normal
Total
Low
Normal
Total
Low
Normal
Total
Post -development
Low
4 (9.1)
4 (9.1)
8 (18.2)
2 (3.9)
4 (7.8)
6 (11.8)
17 (37.8)
3 (6.7)
20 (44.4)
Normal
2 (4.5)
34 (77.3)
36 (81.8)
7 (13.7)
38 (74.5)
45 (88.2)
2 (4.4)
23 (51.1)
25 (55.6)
Total
6 (13.6)
38 (86.4)
44 (100.0)
9 (17.6)
42 (82.4)
51 (100.0)
19 (42.2)
26 (57.8)
45 (100.0)
p
a
.687
.549
1.000
a
Significance level from the McNemar’s test.