Table 2.

Cervical strength assessment by group

	Under-18	Adult	Significance
Isometric strength (kg)
Extension	41.70 (39.36 to 44.18)	53.70 (48.42 to 58.99)	<0.001*
Flexion	22.59 (20.45 to 24.72)	25.40 (22.94 to 27.86)	0.098
Side flexion (left)	32.24 (30.04 to 34.45)	40.53 (36.36 to 44.71)	0.002*
Side flexion (right)	31.83 (29.66 to 24.01)	42.48 (39.24 to 45.73)	<0.001*
Fatigue
Total (kg s)	1305 (1181 to 1429)	1551 (1332 to 1770)	0.058
Time achieved (s)	67.10 (60.44 to 83.17)	71.81 (62.96 to 71.28)	0.390
Average load (kg)	18.25 (16.77 to 19.73)	23.54 (21.35 to 25.73)	<0.001*

All data reported as mean (95% CI).

*Remains significant at the 0.05 level correcting for multiple testing.