Logitech MX ERGO - Page 30

According to a Logitech study a Logitech M570 trackball
tilted at 15° - so very close to MX ERGO design -
muscular activities are lower in comparison with a mouse
for 4 muscles by 35%.
Only the thumb abductor muscle works more to move the
ball (but only by +12%).
+12%
-35%
LOWER MUSCLE ACTIVITIES