The Claim
A single resistance training session to failure with low-load back-squats causes a 13–14% reduction in mean propulsive velocity against a fixed load at both 24 and 48 hours post-exercise in resistance-trained men.
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.
After one set of low-weight squats performed until exhaustion, resistance-trained men experience a 13–14% drop in how fast they can move the weight at both 24 and 48 hours later.
See the scientific wording
After a single resistance training session to failure with low-load back-squats, mean propulsive velocity against a fixed load decreases by 13–14% at 24 and 48 hours post-exercise in resistance-trained men, indicating persistent impairment in movement speed.
After an intense squat workout to failure, muscle cells run out of quick energy, causing waste products to build up inside them. These waste products interfere with the muscle's ability to contract forcefully and quickly, and they also send signals to the brain to reduce the number of muscle fibers being activated. This slowdown in muscle response lasts for at least two days, making movements slower even though the person can still lift the same heavy weight.
What the research says
1 studyAfter doing a tough squat workout until exhaustion, men in the study were still slower at moving the same weight two days later — even though their overall strength hadn’t dropped. This means your speed and power take longer to bounce back than your strength does.
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.