Table 5.

Table summarizing simple linear regression models developed for each group to determine whether peak force, TzH C2–C7, gender, or Chamberlain’s to APL angle had an effect on any difference in ARA C2–C7. The tests were conducted against a null hypothesis that there is no linear association between any variable and ARA C2–C7 difference. Tests of hypotheses were conducted at a significance level of 0.05.

Group	Variable	Test Statistica	p-value
Anterior Head Translation	Gender	0.05	0.82
	Peak Force (lbs.)	0.22	0.65
	TzH C2–C7 Difference (mm)	2.03	0.18
	Chamberlain’s to APL Angle Difference (°)	10.40	0.01
Anterior Head Flexion	Gender	0.82	0.38
	Peak Force (lbs.)	2.18	0.17
	TzH C2–C7 Difference (mm)	0.81	0.39
	Chamberlain’s to APL Angle Difference (°)	1.72	0.21

^aTested against null hypothesis that there is no linear association between the variable and ARA C2–C7 difference