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首页> 外文期刊>Frontiers in Physiology >Non-motorized Treadmill Running Is Associated with Higher Cardiometabolic Demands Compared with Overground and Motorized Treadmill Running
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Non-motorized Treadmill Running Is Associated with Higher Cardiometabolic Demands Compared with Overground and Motorized Treadmill Running

机译：与地面和电动跑步机相比，非电动跑步机与更高的心脏代谢需求有关

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The aim of this study was to compare the cardiometabolic demands of running on a curved non-motorized treadmill (cNMT) with overground (OVR) and motorized treadmill (MOT) running. Fourteen trained male ( n = 7) and female ( n = 7) runners ( V · O 2 peak 56.6 ± 4.0 mL.kg~(?1).min~(?1)) participated in the study. Each experimental session consisted of 5 × 6-min bouts of running at progressively higher speeds, separated by 6-min rest (females 9–15 km.h~(?1); males 10.5–16.5 km.h~(?1)). Oxygen consumption ( V · O 2 ) and heart rate (HR) during the last 2 min of each bout were measured using a portable metabolic cart. Running at a set speed on the cNMT required a higher percentage of V · O 2 peak than OVR (mean ± 90% CI, 22 ± 6%; ES ± 90% CI, 1.87 ± 0.15) and MOT (16 ± 6%; ES 1.50 ± 0.15) running. Similarly, HR during the cNMT was higher compared to OVR (25 ± 9 beats.min~(?1), ES 1.23 ± 0.14) and MOT (22 ± 9 beats.min~(?1), ES 1.35 ± 0.13) trials. The decline in running economy observed during the cNMT trial was negatively related to body mass ( R ~(2) 0.493, P = 0.01), indicating lighter runners were required to work at a higher relative intensity to overcome treadmill belt resistance. These data demonstrate the higher cardiometabolic demand associated with running at a given speed on the cNMT. It is critical these differences are taken into account when prescribing training intensities on the cNMT or translating data from the laboratory to an athletic setting.
机译：这项研究的目的是比较在地面上（OVR）和电动跑步机（MOT）上运行的曲线非电动跑步机（cNMT）上的心脏代谢需求。参加研究的十四名训练有素的男性（n = 7）和女性（n = 7）跑步者（V·O 2峰值56.6±4.0 mL.kg〜（？1）.min〜（？1））。每个实验阶段由5×6分钟的跑步运动组成，以逐渐提高的速度奔跑，间隔6分钟（女性9-15 km.h〜（？1）;男性10.5-16.5 km.h〜（？1） ）。使用便携式代谢推车测量每回合最后2分钟的耗氧量（V·O 2）和心率（HR）。在cNMT上以设定速度运行时，所需的V·O 2峰百分比要比OVR（平均值±90％CI，22±6％; ES±90％CI，1.87±0.15）和MOT（16±6％）高。 ES 1.50±0.15）运行。同样，cNMT期间的心率高于OVR（25±9次/分〜（？1），ES 1.23±0.14）和MOT（22±9次/分〜（？1），ES 1.35±0.13）试验。在cNMT试验期间观察到的跑步经济性下降与体重呈负相关（R〜（2）0.493，P = 0.01），表明需要更轻的跑步者以更高的相对强度进行工作才能克服跑步机皮带的阻力。这些数据表明在cNMT上以给定速度跑步会产生更高的心脏代谢需求。当在cNMT上规定训练强度或将数据从实验室转换为运动环境时，必须考虑到这些差异。

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