New, old sport right, things may come out in time. Was just alerted by a torn rotator cuff experienced by Laura last week. It could have been weakened by preexisting injury or perhaps not. She was doing some rapid turns and really working on her speed which may have moved things in the wrong direction. Folks turning in waves or in races might be vulnerable to the like. I recall kayakers suffering shoulder dislocations by stretching too far out of the "box" hyperextending things beyond normal range of motion. In Laura's case she had little warning and didn't even know it happened or even why until the next morning, sneaky stuff.
Found an article that goes into SUP and shoulder issues, part of it is reproduced below.
2/20/2009 7:45:00 AM
your shoulders and stand up paddle surfing, here's the scoop!
If you’ve been stand up paddling long enough, I’m willing to bet that your shoulders have felt sore at least once or twice and maybe even kept you out of the water for a few days to recover. Whether it’s a past injury that nags you, the wrong size paddle, bad technique, or a combination of each, it eventually sends you to the medicine cabinet (or the liquor cabinet) for some pain relief after a long session. The next few articles are designed to equip you with knowledge about your shoulders to help you keep them healthy, injury free, and out on the water paddling!
The shoulder contains three bones and three separate joints. Many muscles act at the shoulder as movers and/or stabilizers. The muscles have several functions depending on the shoulder’s angle during movement. Of special importance is the rotator cuff, which is made up of four muscles and their tendons originating from the scapula. These tendons help hold the “ball in the socket”, are important stabilizers, and help rotate the shoulder (glenohumeral joint).
Injuries to the shoulder occur for many reasons including acute injuries from sudden trauma such as dislocation, separation or fracture. However, the most common injuries tend to be chronic that can develop from the following:'
1. Prolonged raised position of the shoulders. Holding any muscle in one position too long can cause strain.
2. Repetitive movements and overuse.
3. Doing too much too fast.
Continued at the following link, ** INCLUDING PHOTOS OF A WARMUP ROUTINE **
http://www.hoviesup.com/hovie-sup-bl...he-scoop!.aspx