His next step is to focus on increasing his endurance running speed and reducing his lactate production.

下一步训练的重点就是提升耐力跑的速度及减少乳酸的产生。

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Instead, efficient endurance running requires just a slight knee lift, a quick leg turnover, and a short stride.

相反，有效的长距离跑步只需要稍微的抬腿、很快的步频和短步幅。

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When taking into account our ancient ancestors, "humans have engaged in endurance running for millions of years," the researchers wrote in their study.

当把我们远古的祖先考虑在内的时候，“人类的耐久性跑步已经有上百万年的历史了”，研究着在他们的报告中写到。

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It is said to be most-useful to athletes in endurance sports such as cycling and distance-running.

VOA: special.2011.04.12

The result is a a perfect biomechanical package for endurance running but a disaster for sports that require anaerobic bursts, like sprinting or soccer.

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But a sense that this regimen was aging him prematurely, coupled with the mounting awareness of cardiac issues in extreme endurance athletes, prompted Dr. O'Keefe to slash his running to below 20 miles a week, never faster than eight minutes a mile.

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To test this watch, I gave it to the head of our running club, a famous older man who did Ironman Triathalon, and long distance endurance events.

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