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Frank Evertsen
RE: Mr. Renato Canova: Could You Please Answer a Question About Effective Ways to Improve the Lactate Threshold?
"A high point was Stephen Seiler's contribution to the symposium on practical aspects of lactate measurement (#2041). On the basis of his experience with elite cross-country skiers and rowers, he argued that top endurance athletes do comparatively little training at or near lactate-threshold intensity (blood lactate concentrations of ~4 mmol/L, corresponding to intensities of ~85% of maximum oxygen consumption). Instead, their training is "polarized" around this intensity, in the sense that they do a few sessions per week at intensities well above 4 mmol/L and the rest at <2 mmol/L. He described the lactate threshold as the "lactate black hole", to emphasize his idea that too much training at this intensity tends to reduce the quality of higher intensity work-outs and ultimately leads to training monotony and overtraining".
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This is wrong:

Norwegian rowers train most of their intensive training near anaerobic threshold.

The very best cross-country skiers in Norway, like Bente Skari, Bjørn Dæhlie, Vegard Ulvang and Thomas Alsgaard training consisted of easy training with lactate 1.5 mmol/l (more than 95% of the total training volume). Their intensive training was carried out with high intensity. However, lactate measurements during traininig show that these athletes often trained less hard during these type of training than the second best skiers at the national team. Skiers like Dahlie, Alsgaard and Ulvang did also carry out quite fast long runs too, near their anaerobic threshold.

So the only black hole here is Stephen Seilers' data.

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