Mixed
Performing resistance training sets to concentric failure is necessary to optimize strength and muscle mass gains when using low loads (30-50% 1RM), whereas it is not necessary and potentially counterproductive when using high loads (>70% 1RM).
If you are training at home with light weights or bands, push your sets until you can no longer complete a repetition with good form (concentric failure) to ensure you get strength and muscle benefits. If you have heavier weights, you do not need to go to failure on every set; stopping a few reps short may allow you to do more total work and recover better.
In conclusion, when using low loads (30-60% 1RM), performing sets to concentric failure seems to be necessary to improve strength and increase muscle mass. When high loads are used, however, high-threshold motor units are already recruited, and training to failure does not appear to bring an additional benefit.
Why this rating
Based on multiple cited studies (Burd, Lasevicius, Schoenfeld meta-analysis) and systematic reviews, though the paper itself is a narrative review.
Source
Detraining attenuation during the COVID-19 pandemic: practical considerations for home-based strength and power training
Lucas Guimarães‐Ferreira et al. · Revista Brasileira de Fisiologia do Exercício · 2020
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