The Claim
Training to muscular failure during back-squat exercise causes greater acute impairment in countermovement jump height and peak power output compared to non-failure training with equalized volume load in recreationally trained young men, with performance deficits persisting for up to 30 minutes post-exercise.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If you lift weights until you can't do another rep during squats, you'll feel more tired and jump lower afterward than if you stopped before reaching failure—even if you did the same total amount of lifting. This drop in performance can last up to half an hour.
See the scientific wording
Training to muscular failure during back-squat exercise causes greater acute impairment in countermovement jump height and peak power output compared to non-failure training with equalized volume load in recreationally trained young men, with performance deficits persisting for up to 30 minutes post-exercise.
What the research says
1 studyThe study found that lifting weights until you can't do another rep hurts your jumping ability more and for longer than stopping before failure—even when you do the same total amount of lifting. So yes, going all-out makes you slower and weaker for up to half an hour after.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.