Table 4. Pre and post IMVC values of the neck force (N) and the head acceleration (G) for IG1 (n = 11), IG2 (n = 13) and CG (n = 13). Values are reported as mean ± standard deviation.
Neck flexion [N]
Neck extension [N]
Standing header [G]
Jumping header [G]
Running header [G]
Post-jumping header [G]
Post-running header [G]
Pre ± SD
IG1
267.8 ± 82.4
497.4 ± 107.9
6.3 ± 0.9
6.2 ± 1.2
8.4 ± 1.3
5.4 ± 1.3
7.5 ± 1.2
IG2
261.9 ± 32.4
439.5 ± 104.9
6.2 ± 1.3
5.5 ± 0.5
7.3 ± 1.4
5.7 ± 1.5
7.4 ± 1.9
CG
232.5 ± 55.9
526.7 ± 117.7
6.6 ± 1.3
6.0 ± 1.2
7.5 ± 1.3
6.0 ± 1.8
7.3 ± 1.4
CI 95 %
IG1
229.6-306.1
231.5-275.6
5.5-7.0
5.6-6.8
7.6-9.3
4.4-6.3
6.5-8.4
IG2
217.8-302.1
218.7-303.1
5.4-7.0
4.8-6.2
6.4-8.2
4.7-6.8
6.3-8.4
CG
198.2-267.8
197.1-267.8
6.0-7.3
5.3-6.5
6.8-8.3
5.1-6.9
6.4-8.1
Post ± SD
IG1
304.1 ± 89.8
495.4 ± 115.7
6.7 ± 2.0
5.5 ± 1.2
7.4 ± 1.3
5.1 ± 1.5
7.2 ± 1.5
IG2
326.7 ± 63.8
443.4 ± 100.0
6.3 ± 1.0
5.3 ± 0.6
7.1 ± 1.0
5.1 ± 0.7
6.7 ± 1.6
CG
260.9 ± 72.6
487.5 ± 117.7
6.2 ±1.3
6.0 ± 1.1
7.4 ± 1.2
5.4 ± 1.7
7.3 ± 0.9
CI 95 %
IG1
257.0-351.2
270.7-324.7
5.7-7.6
4.9-6.1
6.7-8.1
4.3-6.0
6.3-8.0
IG2
274.7-379.6
274.6-379.6
5.3-7.3
4.6-6.0
6.3-7.9
4.1-6.1
5.8-7.6
CG
216.8-304.1
216.8-304.1
5.3-7.0
5.4-6.6
6.7-8.1
4.6-6.2
6.6-8.1
∆ PRE-POST
IG1
+36.3 ± 21.6
-1.9 ± 55.9
0.4 ± 2.0
-0.7 ± 1.4
-1.0 ± 1.9
-0.2 ± 2.1
-0.3 ± 1.6
IG2
+65.7 ± 54.9
+4.9 ± 50.0
0.1 ± 1.4
-0.2 ± 0.9
-0.2 ± 1.4
-0.6 ± 1.4
-0.7 ± 1.2
CG
+27.5 ± 27.5
-39.2 ± 55.9
-0.4 ± 1.2
0.1 ± 1.2
-0.1 ± 1.6
-0.6 ± 1.3
0.0 ± 1.4
∆ CI 95 %
IG1
21.6-51.0
-39.2-36.2
-0.9-1.7
-1.7-0.3
-2.3-0.2
-1.6-1.2
-1.4-0.8
IG2
23.5-107.9
-33.3-43.1
-1.0-1.2
-0.9-0.5
-1.3-0.8
-1.7-0.5
-1.6-0.3
CG
10.8-54.9
-73.5 - (-5.8)
-1.1-0.3
-0.6-0.6
-1.1-0.8
-1.3-0.2
-0.8-0.9
CI 95% confidence interval, ∆ PRE-POST Difference between PRE- and POST-Phase, ∆ CI 95% confidence interval of ∆ PRE-POST