Similar to our usage of bands, we also use chains to increase variable resistance. This is also referred to as accommodating resistance, which enables us to train heavy loads at high velocity.
Loading chains is most beneficial with exercises such as squats, deadlifts, or in this case with Felipe, the bench press, where force is produced through ascension. The loaded chains require increased force production through extension because the load decreases while the bar descends and increases as the bar ascends.
Utilizing chains enhances the force-velocity relationships with a given load over time. Chains also permit load variation on the bar through the range of motion. Additionally, the chains improve stability under the bar, and the ability to explode through sticking points during an exercise.
Content by @iammsull