Vertically and Horizontally-Directed Exercises and Sprint Performance, NASEinc Blog Entry

Abstract: The capacity to rapidly generate and apply a great amount of force seems to play a key role in sprint running. However, it has recently been shown that, for sprinters, the technical ability to effectively orient the force onto the ground is more important than its total amount. The force-vector theory has been proposed …

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H2No – Why Drinking Water All Day Long Is Not the Best Way to Stay Hydrated BY MARKHAM HEID, NASEinc Blog

Dehydration is a drag on human performance. It can cause fatigue and sap endurance among athletes, according to a 2018 study in the journal Frontiers in Physiology. Even mild dehydration can interfere with a person’s mood or ability to concentrate. Water is cheap and healthy. And drinking H2O is an effective way for most people …

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Comparison of Backpedal and Cross-over Technique to Acceleration and Change of Direction Speed, Blog Entry by NASEinc

This study compared the efficiency and speed of the cross-over step to backward pedaling for defensive backs when covering a receiver. Abstract In American football, defensive backs guarding receivers use either the cross-over (CO) run or backpedal (BP) technique, but the efficacy of these techniques is unknown. The purpose of this study was to compare …

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Usain Bolt and Maximum Sprint Velocity, Blog Entry by NASEinc

Abstract: This study investigated the maximal sprint velocity kinematics of the fastest 100 m sprinter, Usain Bolt. Two high-speed video cameras recorded kinematics from 60 to 90 m during the men 100 m final at the IAAF World Challenge Zagreb 2011, Croatia. Despite a relatively slow reaction time (194 ms), Bolt won in 9.85 s …

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Resistance Sled Training and Sprint Performance, Blog Entry by NASEinc

Abstract: Sprinting is key in the development and final results of competitions in a range of sport disciplines, both individual (e.g., athletics) and team sports. Resisted sled training (RST) might provide an effective training method to improve sprinting, in both the acceleration and the maximum-velocity phases. However, substantial discrepancies exist in the literature regarding the …

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Conditioning Hops, Drop Jumps, and Sprint Performance, Blog Entry by NASEinc

Abstract – Background: It has previously been shown that conditioning activities consisting of repetitive hops have the potential to induce better drop jump (DJ) performance in recreationally active individuals. In the present pilot study, we investigated whether repetitive conditioning hops can also increase reactive jump and sprint performance in sprint-trained elite athletes competing at an …

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June 17, 2019 NASEinc Blog: Dynamic Calf Strength and Sprint Performance

June  17, 2019 by NASE Abstract Sprinting represents a result-relevant task in many sports. The correlation of sprinting performance and one-repetition maximum (1RM) in a squat has been assumed as assured. Results of the correlation with 1RM of the plantar flexors are still pending. Assuming an increasing relevance of the reactive working capacity with increasing distance, …

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Horizontal Ground Reaction Force Production and Previous Hamstring Injuries, Blog entry by NASEinc

Research Study Objectives: To quantify changes in running kinetics and kinematics during a repeated-sprint test in football players, and explore the sensitivity and specificity with which these variables can identify previous hamstring injury. Design: Western Australia State League footballers with previous unilateral hamstring injury and 20 players without completed a 10 × 6-s repeated-sprint test on a …

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Built for Speed: Musculoskeletal Structure and Sprinting Ability, Blog Entry by NASEinc

This study reveals both hereditary sprint performance advantages and disadvantages of musculoskeletal structure in humans.       Abstract: The musculoskeletal structure of the foot and ankle has the potential to influence human sprinting performance in complex ways. A large Achilles’ tendon moment arm improves the mechanical advantage of the triceps surae but also produces …

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Kinetic Demands of Sprinting Shift Across the Acceleration Phase: Novel Analysis of Entire Force Waveforms , Blog entry by NASEinc

Abstract: A novel approach of analyzing complete ground reaction force waveforms rather than discrete kinetic variables can provide new insight to sprint biomechanics. This study aimed to understand how these waveforms are associated with better performance across entire sprint accelerations. Twenty‐eight male track and field athletes (100‐m personal best times: 10.88 to 11.96 seconds) volunteered …

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