Factors Of A Pointing Device That Can Cause Pain And Injuries |
| Device |
External Force on Body |
Fixed Static Posture |
Continuous Motion |
Total |
| Regular Mouse |
3: gripping; pressing button; push/pull |
4: palm shape; hand position; wrist bending; arm position |
1: move hand to move cursor |
8 |
| Trackball |
2: pressing button; rolling ball |
3: palm shape; hand position; arm position |
1: move hand to move cursor |
6 |
| Touch Pad |
2: hitting pad or pressing button; friction between finger and pad |
2: hand position; arm position |
1: move hand to move cursor |
5 |
| Pen Tablet |
2: gripping pen; pressing button |
1: arm position |
1: move hand to move cursor |
4 |
| Pointing Stick |
2: pressing force on stick; pressing button |
2: hand position; arm position |
0 |
4 |
| Touchless Mouse |
0 |
0 |
0 |
0 |
