Polarized vs. Threshold Training Intensity Distribution on Endurance Sport Performance: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
Rosenblat MA, Perrotta AS, Vicenzino B
Journal of strength and conditioning research · December 1, 2019
The objective of this review was to systematically search the literature to identify and analyze data from randomized controlled trials that compare the effects of a polarized training model (POL) vs. a threshold training model (THR) on measurements of sport performance in endurance athletes. Four studies met the inclusion criteria for the qualitative analysis, and 3 for the meta-analysis. There was sufficient data to conduct a meta-analysis on time-trial performance. The pooled results demonstrate a moderate effect (ES = -0.66; 95% CI: -1.17 to -0.15) favoring the POL group over the THR group. These results suggest that POL may lead to a greater improvement in endurance sport performance than THR.
This is evidence for Zone 2. Already doing it? See how it counts towards your Longevity ScoreSponsored By
Sponsors have no influence on evidence, impact scores, or the science itself.
PMID: 29863593 · DOI: 10.1519/JSC.0000000000002618
View original study ↗