Effect of Ischemic Preconditioning on Maximal Swimming Performance

Williams, N, Russell, M, Cook, CJ, and Kilduff, LP. Effect of ischemic preconditioning on maximal swimming performance. J Strength Cond Res 35(1): 221–226, 2021—The effect (IPC) performance was examined. Using a randomized, crossover design, national- international-level swimmers (n = 20; 14 men, 6 women) participated in 3 trials (Con, IPC-2h, IPC-24h). Lower-body IPC (4 × 5-minute bilateral blood flow restriction at 160–228 mm Hg reperfusion) used 2 hours (IPC-2h) or 24 (IPC-24h) before self-selected (100 m, n 15; 200 5) time trial (TT). The Con sham intervention (15 Hg) exercise. All required 40-minute standardized precompetition warm-up (followed by 20-minute rest; replicating call room procedures) 1 hour TT. Capillary (pH, gases, lactate concentrations) taken immediately after IPC, TT No effects for 100 m (P 0.995; IPC-2h: 64.94 ± 8.33 seconds; IPC-24h: 64.67 8.50 Con: 8.24 seconds), 0.405; 127.70 10.66 129.26 12.99 130.19 10.27 combined total (IPC-2h: 84.27 31.52 79.87 29.72 80.55 31.35 seconds) were observed IPC. Base excess −13.37 8.90 mmol·L−1; −13.35 7.07 −16.53 4.65 mmol·L−1), pH (0.22 0.08; all conditions), bicarbonate −11.66 3.52 −11.62 5.59 −8.47 9.02 carbon dioxide −12.90 3.92 −11.55 7.61 9.90 8.40 percentage oxygen saturation −0.16 1.86%; +0.20 1.93%; +0.47 2.10%), +12.87 3.62 +12.41 4.02 +13.27 3.81 mmol·L−1) influenced < 0.001), but not condition (all P > 0.05). seen when applied any indices physiological measures recorded.