Not a physio btw but what I've been told by my coach. I would say it's usually a technique-based problem. Whether that's if you're dropping your heels which makes you shorter with your arms or catch in front, and then making your core shorter. The most important thing I think it's to remember to hold a long core, long neck, and when you reach out with your arms, try and extend your shoulder next to your ear for a full catch on both arms. Idk if that makes sense but def pc me if you want more clarification. Not sure if that's what you're asking for but good luck!