The post-COVID-19 group showed a higher serum concentration of SARS-CoV-2 IgG titers (ES: −3.96), increased ACE activity (ES: −1.27), PGE- 2 (ES: −2.35), and higher INF-α (innate antiviral defense; ES: −1.13) and soluble TNF-α receptor (anti-inflammatory; ES: −0.92) levels compared with the control group, even after adjustment for MVPA (ES: 0.80; ES: 0.34; ES: 0.62; ES: 0.25, ES: 0.18, respectively). The gene discussed is ACE; the disease is COVID-19.