1 ARTICLE + 2 GRAPHICS – YANN LeMEUR | UNIVERSITY OF WASHINGTON OLY STRENGTH

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**HOW IMPORTANT IS MAXIMUM VELOCITY FOR THE 40 – 2017**

Clark KP^{1}, Rieger RH, Bruno RF, Stearne DJ.

– This investigation analyzed the sprint velocity profiles for athletes who completed the 40-yard (36.6m) dash at the 2016 NFL Combine

PURPOSE

– Evaluate the relationship between maximum velocity and sprint performance, and to compare acceleration patterns for fast and slow athletes

METHODS

– Using freely available online sources, data were collected for body mass and sprint performance (36.6m time with split intervals at 9.1 and 18.3m)

– For each athlete, split times were utilized to generate modeled curves of distance vs. time, velocity vs. time, and velocity vs. distance using a mono-exponential equation

– Model parameters were used to quantify acceleration patterns as the ratio of maximum velocity to maximum acceleration (vmax / amax, or τ)

– Linear regression was used to evaluate the relationship between maximum velocity and sprint performance for the entire sample

– Additionally, athletes were categorized into fast and slow groups based on maximum velocity, with independent t-tests and effect size statistics used to evaluate between-group differences in sprint performance and acceleration patterns

RESULTS

– Maximum velocity was strongly correlated with sprint performance across 9.1m, 18.3m, and 36.6m (r of 0.72, 0.83, and 0.94, respectively)

– However, both fast and slow groups accelerated in a similar pattern relative to maximum velocity (τ = 0.768 ± 0.068s for the fast group and τ = 0.773 ± 0.070s for the slow group)

CONCLUSION

– Maximum velocity is of critical importance to 36.6m time, and inclusion of more maximum velocity training may be warranted for athletes preparing for the NFL Combine