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©2013 UpToDate ® Print Email Active shoulder abduction against resistance Hold a dumbbell using a "full can" position. Then, over a 2 second count, gradually lift your arms in the plane of the scapula, keeping the elbows straight, until your arms are parallel to the ground. Hold for a second, and then slowly lower your arms to the starting position over a 4 second count. Courtesy of Craig Parsons, MS, PT and the Physical Therapy Network.