Table 1.

Mean inspired volume and rib cage contribution to inspired volume during spontaneous breathing and HF-SCS

	Tidal Volume Matching (n = 6)		Rib Cage Contribution Matching (n = 3)
	Spontaneous Breathing	HF-SCS	HF-SCS
Tidal volume, ml	252 ± 7	270 ± 5	136 ± 2*
Volume/kg, ml/kg	13.5 ± 0.3	14.5 ± 0.2	5.8 ± 0.1*
Rib cage contribution
ml	96.0 ± 10.3	135.1 ± 2.8*	90.3 ± 6.5
%	38.9 ± 3.8	51.0 ± 2.0*	64.0 ± 2.5*

Values are means ± SE.

HF-SCS, high-frequency spinal cord stimulation.

^*P < 0.05 compared with spontaneous breathing.