Table 1 Results from the incremental treadmill walking test.

Variable	Max	IAT
Velocity (km/h)	8.3 (0.6)	6.9 (0.6) (83% Vmax)
Heart rate (beats/min)	166 (14)	131 (14)
Lactate (mmol/l)	6.1 (1.8)	2.0 (0.3)
V̇o2max (ml/min/kg)	33.2 (5.1)	23.4 (4.8)
Energy cost (kJ/min)	46.7 (7.1)	32.9 (6.8)
MET	9.5 (1.5)	6.7 (1.4)

Values are maximal performance (Max) and individual anaerobic threshold (IAT) during walking and are expressed as mean (SD) (n  =  16).