Remote Ischemic Preconditioning Mechanism Study

The participants will have one disposable tourniquet applied to the left mid thigh by research personnel. The participants will then be randomized to the treatment group or sham group. The treatment group will receive 3 cycles of RIPC to the left lower leg by occluding blood flow at the thigh with a pneumatic cuff. Each cycle will consist of 5 minutes of ischemia by inflating the cuff to 300 mmHg followed by 5 minutes of reperfusion. The sham group will have the cuff inflated to no more than 15mmHg for three cycles as described above. Areas of hypersensitivity and allodynia will be obtained every 40 min for 280 min following the end of capsaicin application.