Table 1. HRV changes when editing RR intervals from a set of 51 orthostatic tests. Percentages compared to the original artifact-free recordings. Values are mean ± SD [min max].

		RMSSD, %	SDNN, %	LF, %	HF, %	Tot, %
supine	rand10	0 ± 0 [-1 1]	0 ± 0 [0 1]	-1 ± 0 [-2 1]	0 ± 1 [-3 4]	0 ± 0 [-1 1]
	rand30	0 ± 0 [-1 2]	0 ± 0 [-1 1]	0 ± 1 [-3 4]	1 ± 1 [-4 7]	0 ± 1 [-3 3]
	rand50	0 ± 0 [-1 2]	-1 ± 0 [-2 0]	-1 ± 1 [-6 4]	2 ± 1 [-2 6]	-1 ± 1 [-5 2]
	rand100	1 ± 0 [-1 3]	0 ± 0 [-1 2]	6 ± 12 [-3 337]*	-1 ± 2 [-8 14]	5 ± 18 [-4 668]*
	artifact	413 ± 2 [403 422]*	54 ± 0 [54 54]*	0 ± 1 [-1 7]	-1 ± 1 [-3 3]	+1 ± 1 [0 4]
standing	rand10	0 ± 0 [-1 1]	0 ± 0 [0 1]	1 ± 0 [-1 2]	-1 ± 1 [-4 3]	0 ± 0 [-1 2]
	rand30	0 ± 0 [-2 1]	0 ± 0 [-1 1]	-1 ± 1 [-4 3]	-1 ± 1 [-6 3]	-1 ± 1 [-3 2]
	rand50	0 ± 0 [-1 2]	0 ± 1 [-1 1]	2 ± 1 [-3 4]	2 ± 1 [-3 6]	1 ± 1 [-2 5]
	rand100	0 ± 0 [-1 2]	0 ± 0 [-1 1]	4 ± 13 [-5 441]*	2 ± 2 [-4 28]	5 ± 21 [-4 562]*
	artifact	269 ± 1 [264 272]*	47 ± 0 [47 47]*	1 ± 1 [0 8]	-1 ± 0 [-2 2]	0 ± 1 [0 9]

rand10 rand30 rand50 and rand100: randomly adding or subtracting 10, 30, 50 and 100ms to each RR interval; artifact: systematically adding a short-long sequence in each position possible in the RR times series.* p < 0.05 compared to the raw artifact-free trace.