Endurance-training in healthy men is associated with lesser exertional breathlessness that correlates with circulatory-muscular conditioning markers in a cross-sectional design

SpringerPlus

Table 3 Relationships between breathlessness indices and conditioning or ventilatory demand

Total N = 62	IPAQ total	IPAQ walking	IPAQ moderate	IPAQ vigorous	ΔHR/Δ $\overset{•}{V}$ O₂slope	Peak O₂pulse (% predicted)	Ventilatory threshold*	Δ $\overset{•}{V}$ E/Δ $\overset{•}{V}$ CO₂slope
Borg-60	P = 0.0198	P = 0.6623	P = 0.3692	P = 0.0238	P = 0.0199	P = 0.0206	P = 0.1656	P = 0.8112
L.min^-1	Rho = -0.309	Rho = 0.058	Rho = -0.119	Rho = -0.299	Rho = 0.311	Rho = -0.307	Rho = -0.184	Rho = -0.032
Borg-80	P = 0.0138	P = 0.7169	P = 0.1537	P = 0.0296	P = 0.0290	P = 0.0279	P = 0.1667	P = 0.8402
L.min^-1	Rho = -0.380	Rho = -0.056	Rho = -0.220	Rho = -0.336	Rho = 0.341	Rho = -0.339	Rho = -0.213	Rho = 0.031
Borg-30%	P = 0.0194	P = 0.958	P = 0.379	P = 0.021	P = 0.012	P = 0.031	P = 0.027	P = 0.725
$\overset{•}{V}$ E_max_pred	Rho = -0.299	Rho = 0.007	Rho = -0.113	Rho = -0.294	Rho = -0.320	Rho = -0.256	Rho = -0.284	Rho = -0.045

The table describes the statistical correlations (Spearman coefficient: Rho and the P value of the test) between isoventilation breathlessness indices (first column) and the different domains of IPAQ or conditioning markers or ventilatory demand (Δ $\overset{•}{V}$ E/Δ $\overset{•}{V}$ CO₂ slope).
*expressed as% of peak $\overset{•}{V}$ O₂ predicted.