More training volume for sprinting and agility drills makes soccer players slower and less agile—there’s no benefit to doing more, and it actually makes performance worse.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Confirms that increasing training volume consistently reduces sprint and agility performance across diverse soccer populations, with no threshold for benefit.
A systematic review and network meta-analysis of RCTs reporting exact training dosage (MET-min/week) and outcomes for 5m/10m sprint and T-test in soccer players, using individual participant data to model linear dose-response relationships with standardized protocols and low risk of bias. This study already exists and is the source.
Direct causal evidence that increasing training volume from 200 to 600 MET-min/week progressively reduces sprint and agility performance in soccer players.
A 5-arm RCT with 120 elite soccer players randomized to 12 weeks of sprint/agility training at 200, 300, 400, 500, or 600 MET-min/week, with identical exercise type and frequency, measuring 5m/10m sprint and T-test weekly to model the linear decline.
Whether soccer players who increase their sprint/agility training volume over time show progressive declines in sprint speed and agility performance.
A prospective cohort study following 200 professional soccer players over 2 seasons, tracking weekly sprint/agility training volume (MET-min/week) and measuring 5m/10m sprint and T-test at 3-month intervals, adjusting for position, injury, and competition load.
Whether there is a linear association between self-reported sprint/agility training volume and performance in a single snapshot of soccer players.
A cross-sectional survey of 400 soccer players measuring self-reported weekly sprint/agility training volume and performing 5m/10m sprint and T-test on the same day, controlling for age, experience, and playing level.
Anecdotal evidence of sprint and agility performance decline following increased training volume in individual athletes.
A case series of 10 professional soccer players who experienced a >10% decline in 10m sprint or T-test performance after increasing sprint/agility training volume beyond 500 MET-min/week for 8 weeks, documenting training logs, recovery markers, and performance trends.