Break-related methodological aspects. Rest intervals will last around 5-10 seconds for short distances, 20-30 seconds for middle-distance races and 20-60 seconds for long-distance races.
It is extremely important that these breaks should be constantly modified,
within a limited range, and modelled according to each athlete’s adaptive possibilities. Thus, the basic endurance training En-1 will mainly develop organic aerobic endurance and, in a subsidiary manner, body muscles.