Table 4.

Mean vertical ground reaction forces for the different situations and feet

		Prosthetic TT	Prosthetic TF	non-Amp
Level	Everyday Feet	49.8 ± 2.8	47.6 ± 6.1	50.0 ± 2.2
	Meridium	52.8 ± 2.8	46.5 ± 3.6
	Elan	49.8 ± 3.2	47.0 ± 2.5
	Proprio	48.7 ± 4.6	47.1 ± 4.1
	TSA	52.4 ± 2.7	48.7 ± 3.1
	Raize	51.5 ± 4.4
Down (KSF on/off)	Everyday Feet	38.5 ± 3.0	48.9 ± 1.4 / 31.5 ± 5.7	50.0 ± 2.8
	Meridium	51.3 ± 4.1	45.4 ± 3.2 / 44.6 ± 3.3
	Elan	42.7 ± 6.2	48.6 ± 3.8 / 32.8 ± 16.3
	Proprio	35.3 ± 3.8	46.7 ± 1.9 / 33.8 ± 5.3
	TSA	45.6 ± 5.2	51.1 ± 0.7 / 48.2 ± 3.4
	Raize	49.8 ± 4.4
Up	Everyday Feet	48.4 ± 7.1	41.1 ± 4.3	50.0 ± 3.3
	Meridium	55.0 ± 2.2	47.4 ± 3.3
	Elan	46.3 ± 5.7	43.2 ± 4.9
	Proprio	40.2 ± 2.8	40.4 ± 3.6
	TSA	50.6 ± 3.7	42.4 ± 5.0
	Raize	45.7 ± 4.7

Mean vGRF in %bw ± SD shown. Significant differences to the reference group (non-Amp) marked bold (p < 0.0083 for TT and p < 0.01 for TF). Note, the weight difference between sound and prosthetic leg is not considered in the statistical comparison