The Study
Delayed potentiation effect after high-load resistance priming: Effects of rest-redistribution set structures on athletic performance
This study shows that after doing certain types of heavy squats, athletes' jumping, sprinting, and agility got better 6 hours later. It’s like seeing a pattern, but we can’t say for sure that the squat caused the improvement because the study wasn’t perfectly set up to prove cause and effect.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Athletes did heavy squats using two different rest styles. One had short breaks during sets. Scientists tested how well they jumped, ran, and changed direction 6 and 24 hours later.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 538 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1These small improvements can matter in real sports—faster sprints and sharper moves may give athletes an edge.
- 2After 6 hours, the group with short breaks jumped 0.95 cm higher, ran 0.06 seconds faster, and changed direction 0.07 seconds quicker.
- 3Both groups got better at quick turns by 0.11 seconds.
- 4Balance improved over 24 hours for both.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of Exercise Science and Fitness
Year
2025
Authors
Xingyi Niu, Fei Liu, Yuzhen Chen, Diwei Chen, Zhexiao Zhou
Related Content
Claims (5)
Young male athletes who take short breaks during heavy squats might jump a little higher six hours later compared to those who rest longer between sets — it could help their muscles stay sharp for explosive moves.
For male college athletes, taking extra short breaks within sets during heavy weightlifting might help them sprint faster 6 hours later compared to doing regular sets.
Guys who lift weights might be quicker on their feet 6 hours after squatting if they take extra short breaks during their sets instead of doing them the usual way.
Doing heavy squats the night before can help young male athletes change direction faster the next day, whether they take short breaks during sets or not.
When male college athletes do heavy squats, their balance gets better over the next day, peaking at 24 hours — and it doesn’t matter how they spaced out their sets, just that time passed.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.