From: The relation of forward head posture with back muscle endurance in primary school children: a cross-sectional study
Children with forward head posture (N = 132)
Children with normal posture (N = 156)
MD
t value
p value
Mean ± SD
Trunk extensors endurance (s)
78.13 ± 32.15
118.04 ± 58.47
−39.91
−6.99
0.0001