Resistance training can induce systemic effects, such as beneficial responses signaled by lactate, or isolate specific muscles.

“If there's a theme that I really want to bring forward today is that weight training or resistance training of any kind is really used for either systemic effects. 10% of training done where you're feeling that burn which means lactate will be present and sending signals to your brain, and your heart and your liver that are beneficial or isolating muscles which may also generate a kind of a lactate which is associated with the burn result but that isolation of muscles distinctly different.”