- Grasp dumbbells with each hand with palms facing forward.
- Raise arms to side with thumb side up. Lower and repeat.
- Maintain straight elbow position throughout exercise. Exercise
may also be performed with shoulder traveling up to 30º
forward, more inline with plane of scapular.
- Supraspinatus activity is similar between 'empty
can' and 'full can' exercises. However, 'full can' results
in less risk of subacromial impingement. Scapular internal rotation
and scapular anterior tilt, both of which decrease subacromial
space width and increase impingement risk, are greater when performing
with shoulder internal rotation (empty can) compared with scaption
with external rotation (full can). (Escamilla 2009)