Exercise and Sport Sciences Program, Graduate School, Khon Kaen University, Khon Kaen, Thailand.
Department of Tourism, Sport and Society, Lincoln University, Lincoln, New Zealand.
J Strength Cond Res. 2017 Dec;31(12):3287-3294. doi: 10.1519/JSC.0000000000002227.
Wonnabussapawich, P, Hamlin, MJ, Lizamore, CA, Manimmanakorn, N, Leelayuwat, N, Tunkamnerdthai, O, Thuwakum, W, and Manimmanakorn, A. Living and training at 825 m for 8 weeks supplemented with intermittent hypoxic training at 3,000 m improves blood parameters and running performance. J Strength Cond Res 31(12): 3287-3294, 2017-We aimed to investigate the effect of an 8-week low-altitude training block supplemented with intermittent hypoxic training, on blood and performance parameters in soccer players. Forty university-level male soccer players were separated into altitude (n = 20, 825 m) or sea-level (n = 20, 125 m) groups. Before (1-2 days ago) and after (1 and 14 days later) training, players were asked to give a resting venous blood sample and complete a series of performance tests. Compared with sea level, the altitude group increased erythropoietin, red blood cell (RBC) count, and hematocrit 1 day after training (42.6 ± 24.0%, 1.8 ± 1.3%, 1.4 ± 1.1%, mean ± 95% confidence limits (CL), respectively). By 14 days after training, only RBC count and hemoglobin were substantially higher in the altitude compared with the sea-level group (3.2 ± 1.8%, 2.9 ± 2.1% respectively). Compared with sea level, the altitude group 1-2 days after training improved their 50-m (-2.9 ± 1.4%) and 2,800-m (-2.9 ± 4.4%) run times and demonstrated a higher maximal aerobic speed (4.7 ± 7.4%). These performance changes remained at 14 days after training with the addition of a likely higher estimated V[Combining Dot Above]O2max in the altitude compared with the sea-level group (3.2 ± 3.0%). Eight weeks of low-altitude training, supplemented with regular bouts of intermittent hypoxic training at higher altitude, produced beneficial performance improvements in team-sport athletes, which may increase the viability of such training to coaches and players that cannot access more traditional high altitude venues.
翁纳布萨帕维奇、P、哈姆林、MJ、利扎莫雷、CA、马尼曼纳科恩、N、利拉尤瓦特、N、通卡姆纳德泰、O、图瓦库姆、W 和马尼曼纳科恩、A. 在 825 米的海拔高度生活和训练 8 周，并补充间歇性低氧训练 3000 米，可改善血液参数和跑步表现。J 力量与调理研究 31（12）：3287-3294，2017-我们旨在研究 8 周低海拔训练块补充间歇性低氧训练对足球运动员血液和表现参数的影响。40 名大学生男性足球运动员被分为高原组（n = 20，825 米）和海平面组（n = 20，125 米）。在训练前（1-2 天前）和训练后（1 天和 14 天后），运动员被要求提供休息时的静脉血样，并完成一系列表现测试。与海平面相比，高原组在训练后 1 天红细胞生成素、红细胞（RBC）计数和红细胞压积分别增加了 42.6±24.0%、1.8±1.3%和 1.4±1.1%（平均值±95%置信区间（CL））。到训练后 14 天，只有 RBC 计数和血红蛋白在高原组中明显高于海平面组（分别为 3.2±1.8%和 2.9±2.1%）。与海平面相比，高原组在训练后 1-2 天 50 米跑速度（-2.9±1.4%）和 2800 米跑速度（-2.9±4.4%）提高，最大有氧速度（4.7±7.4%）更高。这些表现变化在训练后 14 天仍然存在，高原组的估计 V[Combining Dot Above]O2max 可能更高，而海平面组的估计 V[Combining Dot Above]O2max 更高（分别为 3.2±3.0%）。8 周的低海拔训练，辅以定期在更高海拔进行间歇性低氧训练，为团队运动运动员带来了有益的表现提升，这可能会增加这种训练对教练和无法进入传统高海拔场地的运动员的吸引力。
