A Study to Determine Whether Perioperative Energy Dynamics Correlates With Postoperative Outcomes

Primary Objective: • To characterize the effects of neoadjuvant therapy (chemotherapy, radiation therapy, and/or immunotherapy) on functional capacity in esophageal and lung cancer participants as measured by gas exchange parameters (%predicted AT, %predicted P-VO2, VO2 at AT \& peak exercise, oxygen pulse, ΔVO2/ΔWR, ΔVE/ΔVCO2) obtained from CPET before and after neoadjuvant therapy. Secondary Objectives: • To characterize changes in CPET measures in participants treated with chemotherapy, radiation therapy, and/or immunotherapy followed by surgery and correlate these changes with postoperative outcome.