. Author manuscript; available in PMC: 2013 Jun 1.

Published in final edited form as: Med Sci Sports Exerc. 2012 Jun;44(6):1043–1048. doi: 10.1249/MSS.0b013e3182444c4b

Table 3.

Eucapnic Voluntary Hyperpnea in Women at 40 and 60L/min and in Men at 60 and 90L/min

	RPB (0-10)	$\dot{V} O_{2}$ (L/min)	$\dot{V} O_{2}$ (% pred peak)	$\dot{V} {CO}_{2}$ (L/min)	${\dot{V}}_{E}$ (L/min)	V_T (% FVC)	F_b (bpm)	P_ETCO₂ (torr)	${\dot{V}}_{E} ∕ PMVv$ (%)	EELV (% TLC)	HR (% pred peak)
Women @ rest	1 ± 1	0.21 ± 0.02	10 ± 1	0.17 ± 0.02	8 ± 1	21 ± 7	12 ± 4	37 ± 3	7 ± 2	55 ± 7	42 ± 8
Men @ rest	0 ± 0	0.28 ± 0.03	8 ± 1	0.22 ± 0.04	10 ± 2	15 ± 3	12 ± 3	42 ± 2	6 ± 1	50 ± 7	38 ± 7
P value @ rest	ns	< 0.0001	0.0062	0.0016	0.0262	0.0493	ns	0.0002	0.0159	ns	ns
Women @ 40	2 ± 2	0.24 ± 0.03	11 ± 2	0.19 ± 0.03	41 ± 2	37 ± 8	30 ± 0	35 ± 1	36 ± 7	54± 6	47 ± 8
Women @ 60	4 ± 3	0.28 ± 0.03	13 ± 2	0.18 ± 0.02	60 ± 1	46 ± 9	36 ± 0	40 ± 1	53 ± 9	50 ± 7	47 ± 7
Men @ 60	3 ± 1	0.34 ± 0.05	10 ± 1	0.24 ± 0.04	62 ± 1	31 ± 5	36 ± 0	41 ± 3	35 ± 4	43 ± 8	41 ± 7
P value @ 60	ns	0.0023	0.0028	0.0009	0.0482	0.0004	ns	ns	< 0.0001	ns	ns
Men @ 90	4 ± 1	0.38 ± 0.04	11 ± 1	0.32 ± 0.04	93 ± 2	43 ± 7	40 ± 0	40 ± 1	54 ± 6	44 ± 9	45 ± 7

Values are mean ± SD. RPB, rating of perceived breathlessness (Borg 0-10 scale); ${\dot{V}}_{O_{2}}$ , oxygen uptake (expressed in L/min and as percent of predicted peak ${\dot{V}}_{O_{2}}$ based on age and gender); ${\dot{V}}_{{CO}_{2}}$ , carbon dioxide production; ${\dot{V}}_{E}$ , minute ventilation; VT, tidal volume (expressed as percent of FVC); Fb, breathing frequency (expressed in breaths per minute, bpm); PETCO2, end-tidal CO2; ${\dot{V}}_{E} ∕ PMVV$ , ratio of minute ventilation to maximal voluntary ventilation predicted from FEV1 (PMVV=37.5*FEV1); EELV, end-expiratory lung volume (expressed as percent of TLC); HR, heart rate (expressed as percent of predicted peak heart rate based on age and gender); and ns, non-significant.