Design and Performance Analysis of a Mecanum-Built Perturbation-Based Balance Training Device

Table 5

Peak-acceleration analysis.

Time	PWM			Mean acceleration difference in m/s^2 (p-value)			Task
		Acceleration		1	2	3
		Input	Actual mean
7	33	1	1.26	—	−0.814 (0.000)	−1.551(0.000)	9 cm straight
4	50	2	2.08	0.814 (0.000)	—	−0.737 (0.000)
3	60	3	2.82	1.551 (0.000)	0.737 (0.000)	—
10	33	1	0.94	—	−1.026 (0.000)	−1.967 (0.000)	9 cm diagonal
4	60	2	1.96	1.026 (0.000)	—	−0.941 (0.000)
3	83	3	2.91	1.967 (0.000)	0.941 (0.000)	—
9	43	1	1.06	—	−1.296 (0.000)	−1.888 (0.000)	18 cm straight
6	63	2	2.19	1.296 (0.000)	—	−0.592 (0.013)
4	102	3	2.95	1.888 (0.000)	0.592 (0.013)	—
17	33	1	0.87	—	−1.462 (0.000)	−2.048 (0.000)	18 cm diagonal
4	120	2	2.32	1.462 (0.000)	—	−0.586 (0.010)
3	150	3	2.92	2.048 (0.000)	0.586 (0.010)	—