Blood Flow Restriction Exercise Study

Test the strength of subject's lower extremity muscles on the dynamometer system

The SPPB is a timed short distance walk, repeated chair stands, and balance test that measures lower extremity function.

Subjects walk back and forth along a 100-ft hallway for six minutes after instructions to complete as many laps as possible.

Measure pain using an 11-point numerical pain scale.

Using the Late Life Function and Disability Instrument.

During the course of the surgery two small muscle biopsies from the quadriceps muscle of the operative leg will be collected.

Following the warm-up, subjects will attempt to complete one repetition of the leg press exercise at progressively greater resistance until a full repetition can no longer be performed. The weight of the last complete unassisted repetition will be recorded as the 1-RM.

Perform lower-extremity exercises (leg press, leg extension, leg curl, and calf extension) at an intensity of 30% of 1-RM with external compression applied to the proximal thigh of each leg.

Following each exercise session, participants will provide a rating of perceived exertion (RPE) for the session according to the Borg CR10 scale.