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Weight Belt Adominal Activation
A weight belt is used to stabilize the lower back. To do that, that abdominals are pushed into the front of the belt.
Pushing the abdominal into the belt provides intra-abdominal pressure, IAP. This pressure stabilizes the spine.
Isometric Abdominal Action
Pushing into the belt with the abdominals is an isomtric action. The abdominals need to be driven hard into the belt.
Thus, the abdominals are worked with a belt but differently.
An electromyographic analysis of sumo and conventional style deadlifts.
An electromyographic analysis of sumo a... [Med Sci Sports Exerc. 2002] - PubMed - NCBI
"Compared with the no-belt condition, the belt condition produced significantly greater rectus abdominis activity and significantly less external oblique activity."
Kenny Croxdale
Stop with the copy paste..... We all have google too.