Table 2 Correlation of respiratory parameters with trail (A) and (B)
From: Relationships between trait and respiratory parameters during quiet breathing in normal subjects
A. Trait | |||||
|---|---|---|---|---|---|
Circulation | Differences | ||||
ρ | P | HT | LT | P | |
\(\dot{V}_{\rm E}\)(I) | 0.384 | NS | 9.3 (8.9–9.9) | 8.4 (7.4–9.3) | NS |
FetCO2 (%) | −0.038 | NS | 5.1 (5.0–5.4) | 5.4 (5.2–5.4) | NS |
V t (ml) | −0.687 | <0.01 | 537.0 (493.8–584.1) | 699.2 (585.7–803.21) | <0.05 |
RR (n/min) | 0.749 | <0.001 | 16.9 (6.3–18..8) | 12.1 (8.2–16.1) | <0.01 |
T I (s) | −0.622 | <0.05 | 1.4 (1.3–1.6) | 2.2 (1.6–3.0) | <0.01 |
T E (s) | −0.631 | <0.01 | 2.2 (1.8–2.3) | 2.7 (2.2–4.5) | <0.05 |
\(\dot{\rm {V}} {\rm{O_2}}/W\) (ml/min/kg) | 0.209 | NS | 3.8 (3.4–4.2) | 3.6 (3.3–4.2) | NS |
HR (beat/min) | −0.047 | NS | 67.7 (60.0–83.8) | 73.1 (62.8–78.5) | NS |
B. State | |||||
|---|---|---|---|---|---|
Circulation | Differences | ||||
ρ | P | HS | LS | P | |
\(\dot{V}_{\rm E}\)(I) | 0.349 | NS | 9.3 (8.6–9.7) | 8.47 (7.6–9.7) | NS |
FetCO2 (%) | −0.319 | NS | 5.1 (5.0–5.4) | 5.4 (7.6–9.7) | NS |
V t (ml) | −0.558 | <0.05 | 498.9 (490.1–572.1) | 655.2 (587.3–777.1) | <0.01 |
RR (n/min) | 0.582 | <0.05 | 17.2 (16.5–19.5) | 15.0 (10.1–16.2) | <0.01 |
T I(s) | −0.404 | NS | 1.4 (1.3–1.5) | 1.7 (1.5–2.7) | <0.05 |
T E (s) | −0.623 | <0.01 | 2.1 (1.8–2.2) | 2.6 (2.3–3.7) | <0.01 |
\(\dot{\rm {V}} {\rm{O_2}}/W\) (ml/min/kg) | 0.212 | NS | 3.8 (3.6–4.3) | 3.6 (3.2–4.1) | NS |
HR (beat/min) | −0.245 | NS | 65.8 (58.8–76.6) | 76.4 (65.2–83.3) | NS |