Association of sprint performance with ground reaction forces during the acceleration and maximal speed phases in a single sprint.

The speed with which all four phases of a short sprint (start, acceleration, maximum speed, and deceleration) are completed depends upon the amount of force applied during the pushing action away from the ground (ground reaction force – GRF) each foot strike, and the speed with which force is applied (rate of force production – …

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Passive and PNF but not active or ballistic stretching reduce jump performance

Various forms of stretching have long been an integral component to the pre-training warm-up routine. Teams would often line up in rows on the field and count out their ~15 seconds stretches in unison, starting from their upper body and moving progressively to their lower body. However, the effects of static stretching on strength and …

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Heavy barbell hip-thrusts transiently improve 15 m sprint speed

Post-activation potentiation techniques are commonly used during training sessions to transiently enhance sprinting or jumping performance. The barbell back squat, deadlift and Olympic lifts tend to be the most commonly used potentiating exercises. Each of these movements predominantly involve vertical force production which would be optimal for vertical jumping and peak velocity sprinting. However, for …

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Jump height and relative strength predict sprint performance in elite athletes

Maximum acceleration ability and sprinting speed are key variables that separate the elite from the sub-elite athlete. The necessity to outrun an opponent occurs in virtually all team sports that can be a major determinant of match outcome and thus is an important element focused on during training. The ability to predict and monitor sprint …

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Linear vs. Undulating Periodization for Improving Sprint and Jump Performance

It is well accepted within the culture of collision-based team-sports such as football and rugby that resistance training is a key component to physical preparation. Most teams will include some form of resistance training during both the preparatory and competitive season. While little debate surrounds the usefulness of strength training for these athletes, many coaches …

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In-season resistance training frequency: Once or twice per week?

With the exception of football, it may take some convincing of coaches from other sports (e.g., soccer) to prioritize in-season resistance training. While the culture in soccer is progressively embracing the benefits of strength training, there are still many coaches and players who elect not to do it during the competitive season. This may be …

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Predictors of 20 m sprinting speed in soccer players

Predicting sprinting speed in a mixed group of athletes is fairly easy to do. For example, in a group of athletes who differ substantially by body mass (i.e., American football players), typically the lighter athletes will run the fastest. When physical characteristics are relatively similar among athletes however (such as among soccer players), it becomes …

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Front squat vs. Hip thrust for improving performance variables

There remains a great deal of debate among performance coaches regarding topics such as optimal exercise selection for enhancing sprinting speed, the limiting factors of maximum velocity sprinting and so forth. Slowly over time as more research is produced, more evidence in support of a given training theory becomes revealed and open-minded coaches adjust their …

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Preventing speed loss at the end of the season

A major challenge for strength and conditioning coaches is minimizing decrements in performance (i.e., sprinting speed) as the season trudges on. In the sport of soccer, there’s been reports of nearly 5% reductions in sprinting speed at the end of the season. This is obviously problematic considering this is right around the time of the …

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How to get more bang for your buck with repeated sprint training

In youth sports, conditioning is typically an afterthought for most coaches. Based on how much time is left at the end of the practice, they’ll line the kids up on the goal line and have them do some version of interval training, most often with a name like “gassers” or “suicides”. Progressions are usually not …

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