Table 3.

Summary of statistics for the effects of group (with and without LBP), motion phase (forward bending and backward return) and age (40–50, 50–60, and 60–70) on the maximum values of lumbar velocity, deceleration, and acceleration.

		Lumbar Velocity	Lumbar Deceleration	Lumbar Acceleration
Group	F	7.08	6.84	2.88
	p	0.012	0.014	0.100
Age	F	1.89	1.50	1.13
	p	0.168	0.238	0.337
Motion phase	F	8.81	13.19	2.69
	p	0.006	0.001	0.111
Group × Age	F	0.30	0.34	0.56
	p	0.741	0.714	0.575
Group × Motion phase	F	1.49	2.04	9.76
	p	0.231	0.163	0.004
Age × Motion phase	F	2.83	1.95	4.64
	p	0.074	0.159	0.017
Group × Age × Motion phase	F	2.86	6.86	4. 37
	p	0.072	0.003	0.021

Boldface indicates a significant effect