A young adult participant wearing a K4b2 gas analyzer during a resistance training paradigm.

A young adult participant wearing a K4b2 gas analyzer during an aerobic training paradigm.

A preadolescent participant trying on the mouthpiece for the metabolic cart.

A preadolescent participant getting ready to run during a VO2max test.

The metabolic cart and EKG machine during a MiM GXT.

A MiM participant being fitted with the mouth piece for the metabolic cart before his GXT.

A MiM participant during his GXT.

A MiM participant getting ready to stand up and begin her GXT.