Lifecore Fitness Inc in Carlsbad is a fitness-equipment designer and manufacturer headquartered at 5803 Newton Drive since 2004, producing commercial and residential cardio machines under the LifeCORE, Diamondback, and Assault Fitness Products brands. The Assault Fitness division manufactures the Assault AirBike and AssaultRunner—fan-resistance and curved-treadmill platforms deployed in CrossFit boxes, military installations, and heart-rate-zone interval studios including Orangetheory Fitness locations that program air-resistance cardio as a core training modality. LifeCORE and Diamondback product lines span ellipticals, upright and recumbent bikes, and rowing machines distributed through authorized dealerships and online retail channels across North America. The company holds GSA contract status (GS-03F-0019Y), qualifying its equipment for federal procurement by military fitness centers, VA hospitals, and government facilities—the same institutional buyer channel that supplies rehabilitation-grade hardware to clinical operations such as Gaspar Doctors of Physical Therapy in Carlsbad. AssaultRunner Elite models use a slatted-belt curved deck with steel-frame construction rated for sustained sprint intervals at inclines generated solely by foot strike position, eliminating motor dependency.