Table 2. Comparison of VO2 and [HHb] kinetics at the beginning of the exercise. Values are expressed as mean (± SD) ( = 9).
Upright Supine
VO2 [HHb] VO2 [HHb]
TDp (s) 20.5 ± 2.4 14.7 ± 2.9 * 19.1 ± 3.8 14.1 ± 2.9 *
𝜏p (s) 23.5 ± 6.7 10.5 ± 5.8 * 32.7 ± 10.7 10.0 ± 2.7 *
TDp, primary component time delays of [HHb] and VO kinetics; 𝜏p, primary component time constants of [HHb] and VO2 kinetics.* Significantly different to VO values (p < 0.05).