Blog Archives - The National Association of Speed and Explosion (NASE) Inc.

Best Plyometric Exercises to Improve the Starting Phase of a Short Sprint, Blog Entry by NASEinc

Jan 13, 2020

by pgato888

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Abstract This study determined the horizontal to vertical force ratio (H:V) of two types of sprint starts and a variety of plyometric exercise, for the purpose of determining the exercises which are most biomechanically specific to sprinting. Subjects included 15 men. All subjects’ pe

Ground Reaction Force (GFR) and Acceleration, Blog Entry by NASEinc

Dec 16, 2019

by pgato888

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Abstract: This study aimed to elucidate whether the peak (maximum) ground reaction force (GRF) can be used as an indicator of better sprint acceleration performance. Eighteen male sprinters performed 60-m maximal effort sprints, during which GRF for a 50-m distance was collected using

Support for Vertically-directed Ground Reaction Force as a Limiting Factor, Blog Entry by NASEinc

Dec 03, 2019

by pgato888

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Nagahara, et. al. (2017) conducted a well designed study to clarify the mechanical determinants of sprinting performance during the acceleration and maximal speed phases of a single sprint, using ground reaction forces (GRFs). While 18 male athletes performed a 60-m sprint, GRF was me

The Measurement of Sprint Mechanics Using Instrumented Treadmills, Blog Entry by NASEinc

Nov 18, 2019

by pgato888

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Abstract: Since sprinting involves very fast movement velocities (up to 12 m/s in the best athletes), experimental studies in this field have always been a technical challenge. While sprint kinematics and distance-time or velocity-time variables were first described by the end of the

Hamstring Flexibility and Peak Hamstring Muscle Strain in Sprinting, Blog by NASEinc

Nov 06, 2019

by pgato888

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Abstract and Background: The effect of hamstring flexibility on the peak hamstring muscle strains in sprinting, until now, remained unknown, which limited our understanding of risk factors of hamstring muscle strain injury (hamstring injury). As a continuation of our previous study, t

Unloaded and Sled-resisted Sprinting, Blog Entry by NASEinc

Oct 23, 2019

by pgato888

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Abstract: In this study, we sought to compare force-velocity relationships developed from unloaded sprinting acceleration to that compiled from multiple sled-resisted sprints. Twenty-seven mixed-code athletes performed six to seven maximal sprints, unloaded and towing a sled (20-120%

Understanding Cutting Maneuvers – The Mechanical Consequence of Preparatory Strategies and Foot Strike Pattern

Oct 07, 2019

by pgato888

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Abstract and Objectives: This study investigated the relation of different previously reported preparatory strategies and musculo-skeletal loading during fast preplanned 90° cutting maneuvers (CM). The aim was to increase the understanding of the connection between whole body orientat

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

Sep 25, 2019

by pgato888

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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 amou

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

Sep 13, 2019

by pgato888

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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 drin

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

Sep 02, 2019

by pgato888

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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

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Best Plyometric Exercises to Improve the Starting Phase of a Short Sprint, Blog Entry by NASEinc

Ground Reaction Force (GFR) and Acceleration, Blog Entry by NASEinc

Support for Vertically-directed Ground Reaction Force as a Limiting Factor, Blog Entry by NASEinc

The Measurement of Sprint Mechanics Using Instrumented Treadmills, Blog Entry by NASEinc

Hamstring Flexibility and Peak Hamstring Muscle Strain in Sprinting, Blog by NASEinc

Unloaded and Sled-resisted Sprinting, Blog Entry by NASEinc

Understanding Cutting Maneuvers – The Mechanical Consequence of Preparatory Strategies and Foot Strike Pattern

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

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

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

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