全力匀速跑和间歇跑中的摄氧量
Oxygen uptake in maximal effort constant rate and interval running.
作者信息
Pratt Daniel, O'Brien Brendan J, Clark Bradley
机构信息
School of Health Sciences, University of Ballarat, Mt Helen, Ballarat, VIC 3353, Australia.
出版信息
ScientificWorldJournal. 2013 Sep 1;2013:680326. doi: 10.1155/2013/680326. eCollection 2013.
This study investigated differences in average VO2 of maximal effort interval running to maximal effort constant rate running at lactate threshold matched for time. The average VO2 and distance covered of 10 recreational male runners (VO2max: 4158 ± 390 mL · min(-1)) were compared between a maximal effort constant-rate run at lactate threshold (CRLT), a maximal effort interval run (INT) consisting of 2 min at VO2max speed with 2 minutes at 50% of VO2 repeated 5 times, and a run at the average speed sustained during the interval run (CR submax). Data are presented as mean and 95% confidence intervals. The average VO2 for INT, 3451 (3269-3633) mL · min(-1), 83% VO2max, was not significantly different to CRLT, 3464 (3285-3643) mL · min(-1), 84% VO2max, but both were significantly higher than CR sub-max, 3464 (3285-3643) mL · min(-1), 76% VO2max. The distance covered was significantly greater in CLRT, 4431 (4202-3731) metres, compared to INT and CR sub-max, 4070 (3831-4309) metres. The novel finding was that a 20-minute maximal effort constant rate run uses similar amounts of oxygen as a 20-minute maximal effort interval run despite the greater distance covered in the maximal effort constant-rate run.
本研究调查了在乳酸阈值下，最大努力间歇跑与最大努力恒速跑在相同时间内平均摄氧量的差异。比较了10名男性业余跑步者（最大摄氧量：4158±390 mL·min⁻¹）在乳酸阈值下的最大努力恒速跑（CRLT）、由2分钟以最大摄氧量速度跑和2分钟以最大摄氧量50%的速度跑重复5次组成的最大努力间歇跑（INT）以及在间歇跑期间维持的平均速度跑（CR亚极量）时的平均摄氧量和跑过的距离。数据以平均值和95%置信区间表示。INT的平均摄氧量为3451（3269 - 3633）mL·min⁻¹，为最大摄氧量的83%，与CRLT的3464（3285 - 3643）mL·min⁻¹，最大摄氧量的84%无显著差异，但两者均显著高于CR亚极量的3464（3285 - 3643）mL·min⁻¹，最大摄氧量的76%。与INT和CR亚极量的4070（3831 - 4309）米相比，CLRT跑过的距离显著更长，为4431（4202 - 3731）米。新发现是，尽管最大努力恒速跑跑过的距离更长，但20分钟的最大努力恒速跑与20分钟的最大努力间歇跑消耗的氧气量相似。
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