Training-intensity Distribution on Middle- and Long-distance Runners: A Systematic Review.
2021
Training-intensity distribution (TID) is considered the key factor to optimize
performance in endurance sports. This systematic review aimed to: I)
characterize the TID typically used by middle-and long-distance runners; II)
compare the effect of different types of TID on endurance performance and its
physiological determinants; III) determine the extent to which different TID
quantification methods can calculate same TID outcomes from a given training
program. The keywords and search strategy identified 20 articles in the research
databases. These articles demonstrated differences in the quantification of the
different training-intensity zones among quantification methods (i. e.
session-rating of perceived exertion, heart rate, blood lactate, race pace, and
running speed). The studies that used greater volumes of low-intensity training
such as those characterized by pyramidal and polarized TID approaches, reported
greater improvements in endurance performance than those which used a threshold
TID. Thus, it seems that the combination of high-volume at low-intensity
(≥ 70% of overall training volume) and low-volume at threshold
and high-intensity interval training (≤ 30%) is necessary to
optimize endurance training adaptations in middle-and long-distance runners.
Moreover, monitoring training via multiple mechanisms that systematically
encompasses objective and subjective TID quantification methods can help
coaches/researches to make better decisions.
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