If you are lifting an object off of the ground from a full stop, if you round your back and keep your legs straight, you put the majority of the lift into your spinal erectors, and somewhat into your lats. It’s just a weaker process than predominantly using the quads and hamstrings.
But you can still train these weaker muscles to help avoiding injury. Since real life doesn’t allow for a perfect posture on every lift, it’s important to strengthen improper lifting as well as proper lifting. This helps your ligaments and tendons as well as your muscles, and can strengthen your spinal column as well, which needs to be able to spin, bend, extend, and compress.
Latest Answers