Quote:
Originally Posted by kenzo242
The upper back rounding is just as bad as the lower back.
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not really. in fact, rounding of either under load isn't really THAT bad, it's the change from rounded to arched under load that has the greatest potential for injury. This tendency is FAR greater in the lumbar spine than it is in thoracic spine since you can "lock out" a back heavy lift like swings or deadlifts without changing much in terms of upper back rounding. The lumbar spine however is the part of your back being erected if you perform the lift with a round back and that DOES increase the risk of injury significantly.
While the of the spine are similar throughout, its FAR less likely that he's going from rounded to arched under load in his upper back and if he is, it's MUCH less severe than what would typically cause injury, especially in lower back where there's greater instability to begin with.
In short... you are wrong.