Table 1.

Statistically significant results of the dependent variables (i.e., location [L] and period [P]) and their interactions for the displacement and angle of individual body segments in the AP direction

Dependent variable	Body joint	Effects	df	F	Pr > F
Displacement	Head	L	4, 270	18.64	<0.0001
		P	2, 270	44.94	<0.0001
		L × P	8, 270	4.76	<0.0001
	Neck (C7)	L	4, 270	2.38	0.048
		P	2, 270	18.67	<0.0001
		L × P	8, 270	2.15	0.034
	Lower torso (L5/S1)	L	4, 270	483.63	<0.0001
		P	2, 270	495.66	<0.0001
		L × P	8, 270	132.86	<0.0001
	Knee	L	4, 270	395.36	<0.0001
		P	2, 270	451.68	<0.0001
		L × P	8, 270	117.29	<0.0001
Angle	Neck	L	4, 270	162.79	<0.0001
		P	2, 270	190.48	<0.0001
		L × P	8, 270	45.80	<0.0001
	Torso	L	4, 270	756.79	<0.0001
		P	2, 270	688.09	<0.0001
		L × P	8, 270	210.87	<0.0001
	Knee	L	4, 270	255.91	<0.0001
		P	2, 270	279.35	<0.0001
		L × P	8, 270	65.25	<0.0001
	Ankle	L	4, 270	432.74	<0.0001
		P	2, 270	473.45	<0.0001
		L × P	8, 270	127.85	<0.0001

Pr, Probability.