Polarized and sweet spot training could not be more different and yet the two are both very popular training methods amongst cyclists. Which one actually has the science to back it up though?
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Studies I used in this video:
https://journals.humankinetics.com/view/journals/ijspp/9/2/article-p332.xml
https://journals.humankinetics.com/view/journals/ijspp/9/2/article-p265.xml
https://journals.physiology.org/doi/full/10.1152/japplphysiol.00652.2012
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6873141/
https://www.frontiersin.org/articles/10.3389/fphys.2017.00515/full
https://journals.lww.com/nsca-jscr/Fulltext/2015/12000/Current_Scientific_Evidence_for_a_Polarized.34.aspx
https://journals.humankinetics.com/view/journals/ijspp/13/9/article-p1114.xml
https://www.frontiersin.org/articles/10.3389/fphys.2015.00295/full
https://journals.lww.com/nsca-jscr/Abstract/2019/12000/Polarized_vs__Threshold_Training_Intensity.34.aspx