Immediate muscle strengthening by an end-effector type gait robot with reduced real-time use of leg muscles: A case series and review of literature

Table 2 Comparison of peak torque and motor unit recruitment

Dominant side	Peak torque (Nm / kg)		Maximal ratio of torque development(Nm / s· kg)
	mean ± SE	95%CI
Knee flexors
Before intervention	42.2 ± 15.7	10.9 - 73.5	71.2 ± 32.3
After training on the floor	51.4 ± 20.5a	10.5 – 92.3	65.3 ± 19.7
After training in the robot	61.0 ± 24.2ac	12.7 - 109.4	68.0 ± 24.0
Knee extensors
Before intervention	85.6 ± 23.5	38.7 – 132.6	68.3 ± 6.2
After training on the floor	100.0 ± 29.8a	40.5 - 159.5	70.5 ± 6.5
After training in the robot	104.4 ± 32.5ac	39.4 – 169.4	70.5 ± 8.8

^aP < 0.01 vs before intervention, Kruskal Wallis test.

^cP < 0.01 vs after training on the floor, Mann-Whitney test.