Athletes who have a lot of action at the shoulders, such as baseball and volleyball players, are very familiar with the lateral raise with thumbs up exercise. The exercise, which is also commonly referred to as the full can exercise, is used as a preventive and rehabilitative exercise to strengthen the rotator cuff. While lateral raise with thumbs up can help stabilize the shoulder and reduce the risk of injury, it can also be dangerous if done incorrectly.
Technique
To perform the lateral raise with thumbs up, grip a pair of dumbbells and hold them down by your sides. Set your feet so that they’re shoulder-width apart. Keep your arms straight as you lift your arms up at a 45-degree angle up and out to your sides. Continue until your arms are parallel to the floor and then slowly return your arms down to your side. Your thumbs should be positioned on top of your fingers throughout the entire movement.
Benefits
The lateral raise with thumbs up primarily isolates the supraspinatus muscle in the shoulder. The supraspinatus is one of the four rotator cuff muscles that are responsible for stabilizing the shoulder joint. It originates at the bottom of your scapula and then runs through your shoulder joint where it inserts at the top of your upper arm bone. According to ExRx.net, it’s the most frequently injured rotator cuff muscle. Strengthening the supraspinatus prepares it to better handle its responsibility at the shoulder and thus decreases the risk of injury.
Intensity
The supraspinatus is a small muscle, so you don’t want to use heavy weights when you’re performing the lateral raise with thumbs up exercise. In fact, if you use too heavy of a weight, you can cause it to become inflamed. The muscle runs in a tight spot in your shoulder capsule and if inflamed, can lead to it rubbing against other structures in the shoulder, thus increasing inflammation and possibly leading to impingement. Use dumbbells that are 1 to 3 pounds and perform the exercise slowly and under control. Avoid jerking in an attempt to complete more repetitions.
Training
Do the lateral raise with thumbs up exercise two to three days per week and on nonconsecutive days. Complete the exercise at a volume of two sets of 10 repetitions, resting one to two minutes in between each set. If you’re going to incorporate the lateral raise with thumbs up into your regular weight training workout, schedule it at the end of your training session so that your supraspinatus isn’t fatigued when you’re performing larger, compound exercises.
References
- ExRx.net: Supraspinatus
- ExRx.net: Common Muscular Weaknesses
- Camino Medical Group: Rotator Cuff Exercises
- American Journal of Sports Medicine: Scapular Kinematics During Supraspinatus Rehabilitation Exercise: A Comparison of Full-can Versus Empty-can Techniques.
- Physioroom.com: Exercises to Strengthen the Rotator Cuff Muscles in the Shoulder
- American Journal of Sports Medicine: The Most Effective Exercise for Strengthening the Supraspinatus Muscle
Writer Bio
Kim Nunley has been screenwriting and working as an online health and fitness writer since 2005. She’s had multiple short screenplays produced and her feature scripts have placed at the Austin Film Festival. Prior to writing full-time, she worked as a strength coach, athletic coach and college instructor. She holds a master's degree in kinesiology from California State University, Fullerton.