Pulse Rate Variability Is Not the Same as Heart Rate Variability: Implications for Sports Performance and Injury Prevention. - Ben-David, Kfir; Kantrowitz, Allen B.; Morris, Michael; Renaghan, Eric J.; Feigenbaum, Luis A.; Bellamy, Kyle; Girardi, Joe; Wittels, Harrison L.; Wishon, Michael J.; McDonald, Samantha M.; Wittels, S. Howard (Sports Medicine - Open, 2026)