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Results: 68
Excessive fluctuations in knee joint moments during early stance in sprinting are caused by digital filtering procedures
Inverse dynamics analyses are commonly used to understand movement patterns in all forms of gait. The aim of this study was to determine the effect of digital filtering procedures on the knee joint moments calculated during...
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Excessive fluctuations in knee joint moments during early stance in sprinting are caused by digital filtering procedures
Inverse dynamics analyses are commonly used to understand movement patterns in all forms of gait. The aim of this study was to determine the effect of digital filtering procedures on the knee joint moments calculated during...
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Information Encoding by Individual Neurons and Groups of Neurons in the Primary Visual Cortex
Daniel Salo Reich
Jan 01, 0001
How is information about visual stimuli encoded into the responses of neurons in the cerebral cortex? In this thesis, I describe the analysis of data recorded simultaneously from groups of up to eight nearby neurons in the...
Published by: Rockefeller University
Measurement error in estimates of sprint velocity from a laser displacement measurement device
This study aimed to determine the measurement error associated with estimates of velocity from a laser-based device during different phases of a maximal athletic sprint. Laser-based displacement data were obtained from 10...
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Choice of sprint start performance measure affects the performance-based ranking within a group of sprinters
Sprint start performance has previously been quantified using several different measures. This study aimed to identify whether different measures could influence the performance-based ranking within a group of 12 sprinters, and...
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Active composites based on bistable laminates
This paper describes the manufacture, characterisation and actuation of functional composites using asymmetric bistable composites. Such laminate structures are finding interest in applications such shape changing applications...
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Bend sprinting performance
Athletes in inner lanes may be disadvantaged during athletic sprint races containing a bend portion because of the tightness of the bend. We empirically investigated the veracity of modelled estimates of this disadvantage and...
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Relationships between lower-limb kinematics and block phase performance in a cross section of sprinters

This study investigated lower-limb kinematics to explain the techniques used to achieve high levels of sprint start performance. A cross-sectional design was used to examine relationships between specific technique variables...

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Kinetic demands of sprinting shift across the acceleration phase

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...

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Modeling the stance leg in two-dimensional analyses of sprinting
Two-dimensional analyses of sprint kinetics are commonly undertaken but often ignore the metatarsalphalangeal (MTP) joint and model the foot as a single segment. Due to the linked-segment nature of inverse dynamics analyses, the...
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Elite sprinting

Purpose: The aim of this study was to investigate the step characteristics among the very best 100-m sprinters in the world to understand whether the elite athletes are individually more reliant on step frequency (SF) or step...

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The effect of the bend on technique and performance during maximal effort sprinting

This study investigated changes in performance and technique that occur during maximal effort bend sprinting compared with straight-line sprinting under typical outdoor track conditions. Utilising a repeated measures design...

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The effect of altering loading distance on skeleton start performance
Athletes initiating skeleton runs differ in the number of steps taken before loading the sled. We aimed to understand how experimentally modifying loading distance influenced sled velocity and overall start performance. Ten...
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Physical predictors of elite skeleton start performance
Purpose: An extensive battery of physical tests is typically employed to evaluate athletic status and/or development often resulting in a multitude of output variables. We aimed to identify independent physical predictors...
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Relationships between lower-limb kinematics and block phase performance in a cross section of sprinters

This study investigated lower-limb kinematics to explain the techniques used to achieve high levels of sprint start performance. A cross-sectional design was used to examine relationships between specific technique variables...

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How sprinters accelerate beyond the velocity plateau of soccer players

Forces applied to the ground during sprinting are vital to performance. This study aimed to understand how specific aspects of ground reaction force waveforms allow some individuals to continue to accelerate beyond the...

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Force production during maximal effort bend sprinting
This study investigated whether the ‘constant limb force hypothesis’ can be applied to bend sprinting on an athletics track and to understand how force production influences performance on the bend compared with the straight....
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Detecting meaningful body composition changes in athletes using dual energy X-ray absorptiometry
Dual-energy X-ray absorptiometry (DXA) imaging is considered to provide a valid and reliable estimation of body composition when stringent scanning protocols are adopted. However, applied practitioners are not always able to...
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Lower limb joint kinetics during the first stance phase in athletics sprinting
This study analysed the first stance phase joint kinetics of three elite sprinters to improve the understanding of technique and investigate how individual differences in technique could influence the resulting levels of...
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Associations between ground reaction force waveforms and sprint start performance

Ground reaction forces produced on the blocks determine an athlete’s centre of mass motion during the sprint start, which is crucial to sprint performance. This study aimed to understand how force waveforms are associated...

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Kinetic demands of sprinting shift across the acceleration phase

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...

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The effect of the bend on technique and performance during maximal effort sprinting

This study investigated changes in performance and technique that occur during maximal effort bend sprinting compared with straight-line sprinting under typical outdoor track conditions. Utilising a repeated measures design...

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Understanding the effect of touchdown distance and ankle joint kinematics on sprint acceleration performance through computer simulation
This study determined the effects of simulated technique manipulations on early acceleration performance. A planar seven-segment angle-driven model was developed and quantitatively evaluated based on the agreement of its output...
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