Table 3.

Difference between the LPS and reference system for instantaneous speed, for optimal and sub-optimal condition respectively.

	Optimal					Sub-optimal
	n	Average diff (m/s)	Max diff (m/s)	Average diff (%)	Max diff (%)	n	Average diff (m/s)	Max diff (m/s)	Average diff (%)	Max diff (%)
Task 1	34	0.77 ± 0.86	10.40	34.8	375	17	1.43 ± 1.86	16.79	83.7	6101
Task 2	16	0.78 ± 0.70	7.56	33.5	237	13	1.60 ± 1.97	18.62	74.4	353
Task 3	19	0.92 ± 0.88	7.40	39.2	355	8	2.30 ± 2.94	31.25	87.7	982
Task 4	18	0.79 ± 0.71	8.10	35.3	477	13	1.64 ± 1.79	18.44	90.8	1175
Task 5	16	0.68 ± 0.58	8.67	37.0	197	13	1.73 ± 3.41	53.73	75.4	769