Table 1 List of the keywords used for the electronic search

1. Exoskeleton

8. Soft

16. Upper limb

2. Robot

9. Flexible

17. Arm

3. Exosuit

10. Wearable

18. Shoulder

4. Exosleeve

11. Inflatable

19. Elbow

5. Sleeve

12. Cable-driven

20. Forearm

6. Orthosis

13. Pneumatic

21. Wrist

7. Suit

14. Fabric-based

22. Upper extremity

15. Portable