Table 2.

Muscle and pulmonarykinetics in the recovery from low-intensity and high-intensity knee-extensor exercise

(l min−1)	0.55 ± 0.02*	0.38 ± 0.03*	1.07 ± 0.05*	0.79 ± 0.07
Tdp (s)	11 ± 3*	0 ± 2	14 ± 3*	3 ± 3
τp (s)	36 ± 4*	18 ± 4	33 ± 3*	24 ± 2
95% CI (s)	3 ± 0	7 ± 3	5 ± 3	7 ± 2
Ap (l min−1)	0.36 ± 0.02	0.31 ± 0.03	0.75 ± 0.05	0.72 ± 0.06
Gp (ml min−1 W−1)	9.6 ± 0.7*	8.3 ± 0.8	10.6 ± 0.7	10.2 ± 0.9
Tds (s)	—	—	151 ± 19	—
As′ (l min−1)	—	—	0.05 ± 0.01	—
(l min−1)	—	—	0.11 ± 0.02*	0.06 ± 0.02
(l min−1)	0.20 ± 0.01*	0.08 ± 0.02	0.27 ± 0.07*	0.08 ± 0.01
MRTt (s)	54 ± 4*	13 ± 2	56 ± 3*	35 ± 8

^*Significantly different (P < 0.05) from corresponding value for . Td_p, τ_p and A_p represent the time delay, time constant and amplitude terms, respectively, for the fundamental component, and Td_s and A_s′ represent the time delay and amplitude terms, respectively, for the slow component of muscle and pulmonary O₂ uptake (see eqns (4) and (5) and associated text). Note that the Td_p is a model parameter that does not necessarily reflect the duration of ‘phase I’. 95% CI is the 95% confidence interval surrounding the estimation of the corresponding time constant; G_p is the response gain of the fundamental component (); is the increase in O₂ uptake between the second and sixth minutes of exercise; and MRT_t is the mean response time for the entire response; see text for further details.