Literature Review
Literature Review
- Chen et al. (1994), “Quantitative Evaluation of 4 Computer Keyboards: wrist posture and typing performance”:
- 3 alternative kbds reduced wrist deviation
- Kinesis produced least wrist extension and ulnar deviation (11.7o, 4.5o)
- slower typing speed initially (23-30wpm)
- Similar results by Smith and Cronin (1993), “Ergonomic Test of the Kinesis Keyboard”
- wrist deviation and muscle load were reduced