Ischemic preconditioning of the legs results in small improvements in peak exercise capacity at sea level, but not simulated high altitude in trained male cyclists

摘要: of a dissertation at the University Miami Dissertation supervised by Professor Kevin Jacobs No. pages in text (28) Ischemic preconditioning (IPC) may have profound local and systemic effects that improve blood flow oxygen delivery to tissues, including skeletal muscle, has potential intense aerobic exercise performance, especially which results arterial hypoxemia. Purpose: To determine IPC legs on peak capacity (Wpeak), submaximal cardiovascular hemodynamics, saturation (SaO2) trained males sea level (SL) simulated high altitude (HA; FIO2 = 13.3%, ~3650 m). Methods: Fifteen highly male cyclists triathletes completed two Wpeak tests (SL HA) four experimental trials (10 min 55% specific increasing 30 W every 2 until exhaustion) with without IPC. Results: HA resulted significant hypoxemia during compared SL (73 ±1 vs. 93 ± 1% SaO2, p< 0.05) was associated 21% lower values. 1.9 0.8% higher average value control (p 0.032). While 4.7 2.3% control, this difference failed reach statistical significance 0.084). did not significantly affect hemodynamics or SaO2 HA. Conclusions: little effect