Table 1.

Slopes of the relationship between surface compliance and mean firing rate during the loading phase for SAI, FAI, and SAII afferents, before (control) and during venous occlusion

Force	Control, 1 N	Occlusion, 1 N	Control, 2 N	Occlusion, 2 N	Control, 4 N	Occlusion, 4 N
SAI	0.94 ± 0.29	0.93 ± 0.25	0.84 ± 0.29	0.99 ± 0.25	0.81 ± 0.31	0.92 ± 0.26
P value	0.0019	0.0004	0.0048	0.0002	0.0108	0.0006
FAI	0.39 ± 0.41	0.08 ± 0.52	0.67 ± 0.29	0.23 ± 0.43	0.66 ± 0.21	0.34 ± 0.29
P value	0.3361	0.8769	0.0221	0.6031	0.0028	0.2415
SAII	0.36 ± 0.49	0.20 ± 0.44	0.35 ± 0.57	0.48 ± 0.41	0.50 ± 0.62	0.70 ± 0.41
P value	0.4691	0.6508	0.5454	0.2437	0.4247	0.0948

Values are means ± SE; n = 10 slowly adapting (SA) type I (SAI), 9 fast adapting type I (FAI), and 10 SA type II (SAII) afferents. Significant P values are indicated in bold. Slopes were significant before and after occlusion for the SAI afferents and were not affected by occlusion, while for the FAI afferents slopes were lower following occlusion. Slopes were flat for the SAII afferents and were not affected by occlusion.