TRAINING PROGRESS
How Fast Do You Lose Your Jump? The Detraining Timeline
One week off barely costs anything. Eight weeks off costs a lot — but muscle memory brings it back faster than you think.
Breaks are inevitable — travel, exams, injuries. What matters is knowing how fast performance actually declines, and the minimum dose that keeps it from declining at all.
The detraining timeline
Losses come in stages:
- 1–2 weeks off: mild neural decline, 5–8% strength loss; jump height barely changes or drops 2–3 cm.
- 3–4 weeks: muscle cross-sectional area starts falling, strength down 10–15%, CMJ down 5–8 cm.
- 8+ weeks: significant regression — but retained myonuclei make regain fast.
The minimum maintenance dose
One strength session plus one plyometric session per week maintains 80–90% of your condition. That is the floor for any break longer than two weeks.
Regaining what you lost
After a full break, 4–8 weeks of retraining returns most athletes to baseline thanks to muscle memory. The second climb is faster than the first.
Key takeaways
- Short breaks cost little; 8+ weeks cost real height.
- 1 strength + 1 plyometric session per week prevents most detraining.
- Regain is faster than the original build thanks to muscle memory.
References
- Mujika & Padilla (2000) Sports Med
- Bruusgaard et al. (2010) PNAS
Keep reading
TRAINING PROGRESS
How Long Until You See Results From Jump Training?
A realistic vertical jump improvement timeline: what changes at 2, 4, 8 and 12 weeks, and why starting level, training quality and recovery decide the pace.
TRAINING METHODS
How Many Jump Training Sessions Per Week Do You Actually Need?
Training frequency by experience level, safe plyometric contact volume, and the warning signs that tell you to cut back.
TRAINING PROGRESS
How to Break a Jump Training Plateau
A plateau means the body has adapted to the current stimulus. Diagnose the weak link, change the variables, deload and fix recovery.