Link to our podcast Beauty and the Geek:
https://beautyandthegeek.podbean.com/e/introducing-the-beauty-and-the-geek-podcast/
Training to failure leads to slightly less strength gain compared to non-failure:
https://pubmed.ncbi.nlm.nih.gov/26666744/
Similar gains in strength in hypertrophy from training to failure vs. non-failure:
https://pubmed.ncbi.nlm.nih.gov/33497853/
Training not to failure may improve strength & power out put more than training to failure while hypertrophy is the same between both:
https://pubmed.ncbi.nlm.nih.gov/33555822/