If you're a real stud, your LTHR (lactate-threshold heart rate) might actually be at 95 per cent of MHR; if you're a beginner, it could be at 65 to 70 per cent. If you're neither, LTHR could be nearly anywhere, depending on your previous training, overall fitness, and individual characteristics.
The diagram shown on the right shows a typical blood lactate concentration versus running speed plot. From these type of graphs, the exercise physiologist can determine your pace at lactate threshold. A heart rate monitor is typically worn, which provides heart rate data to cross-reference, from which heart rate training zones can be set.
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