Result
Result
- Cursor Positioning
- Accuracy: No significant difference
- Wrist Extension
- Gripmaster: no significant difference: mouse=10.8o; trackball= 14.0o
- Video Motion Analysis: mouse=14.1o; trackball= 25.4o (t=-2.51, df=11, p=.03)
- risk of RSI with FASK trackball
- Ulnar:
- no significant difference: Average for TK mouse 4.5o; FASK trackball 2.9o
- 3D plots: combined wrist deviation