Table 2 The medians and the reduction rates of (a) mean EMG and (b) peak EMG across the three exosuit conditions and the two weight-bearing conditions.

From: Effects on muscular activity and usability of soft active versus rigid passive back exoskeleton during symmetric lifting tasks

 

Lifting weight

Process

Median EMG under each condition (MVC%)

EMG reduction rate (%)

*p < 0.05; **p < 0.01; ***p < 0.001

No exo

With active exosuit

With passive exoskeleton

No device versus with active exosuit

No device versus with passive exoskeleton

(a) Mean EMG

0 kg

Bend down

6.26

6.45

6.64

− 3.06

− 6.02

Lift up

13.68

10.46

11.74

23.57 (***)

14.17

25 kg

Bend down

21.31

14.48

14.10

32.04 (***)

33.81 (*)

Lift up

29.20

21.08

24.20

27.81 (***)

17.11 (*)

(b) Peak EMG

0 kg

Bend down

24.47

17.79

26.13

27.30 (**)

− 6.79

Lift up

38.44

27.27

32.27

29.05 (***)

16.05

25 kg

Bend down

56.00

38.28

46.29

31.64 (***)

17.33 (*)

Lift up

74.97

55.45

62.51

26.04 (***)

16.62 (*)