An alternative approach to describing agility in sports through establishment of a relationship between velocity and radius of curvature

Arshi, Ahmed Reza; Nabavi, Hoda; Mehdizadeh, Sina; Davids, Keith

doi:10.1080/02640414.2014.990481

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…Agility is one of the fundamental skills that an athlete should possess. The value of agility was shown in a person's ability to change position and direction as quickly as possible in response to a particular situation (Arshi, Nabavi, Mehdizadeh, & Davids, 2015).…”

Section: Introductionmentioning

confidence: 99%

Development of Shuttle Run Test With Recorded Data Based on Arduino

Yohandri

Ashadi²

2021

Sostek

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Athletes require agility as a fundamental skill. A shuttle run is one method for assessing an athlete’s agility. The aim ofthis research is to design and develop a shuttle run instrument with recorded data based on Arduino. This shuttle runinstrument is used to assess a person’s speed and endurance, with the results being saved in a database and then sentto a website. Engineering research method is adopted in this research. In this instrument, an Arduino is programmedas a timer to calculate an athlete’s running time, which is controlled by sensors. The photodiode sensor detects athletespassing through the shuttle, and the ESP8266 module connects Arduino to the database. The data collected by theArduino is saved in a database and is accessible via the internet. The accuracy and precision of the timer of shuttlerun instrument is investigated. Ten students took part in the test to evaluate shuttle run instrument’s performance.Measured result shows the accuracy and precision of the instruments is obtained 80.8% and 99.5%, respectively.Based on measured result, the shuttle run instrument is accurate and precision for operating in agility assessment.

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Section: Introductionmentioning

confidence: 99%

Development of Shuttle Run Test With Recorded Data Based on Arduino

Yohandri

Ashadi²

2021

Sostek

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“…Fecha recepción: 15-11-16. Fecha de aceptación: 10-03-17 Basilio Pueo basilio@ua.es (Arshi, Nabavi, Mehdizadeh, & Davids, 2015) Vicon, 6, 200 Hz 18 Soccer Power law could be implemented in an agility drill thus opening the way for establishment of a more representative measure of agility performance instead of drill duration.…”

Section: Introductionmentioning

confidence: 99%

Application of motion capture technology for sport performance analysis (El uso de la tecnología de captura de movimiento para el análisis del rendimiento deportivo)

Pueo

Jiménez-Olmedo

2017

Retos

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In sport performance, motion capture aims at tracking and recording athletes’ human motion in real time to analyze physical condition, athletic performance, technical expertise and injury mechanism, prevention and rehabilitation. The aim of this paper is to systematically review the latest developments of motion capture systems for the analysis of sport performance. To that end, selected keywords were searched on studies published in the last four years in the electronic databases ISI Web of Knowledge, Scopus, PubMed and SPORTDiscus, which resulted in 892 potential records. After duplicate removal and screening of the remaining records, 81 journal papers were retained for inclusion in this review, distributed as 53 records for optical systems, 15 records for non-optical systems and 13 records for markerless systems. Resultant records were screened to distribute them according to the following analysis categories: biomechanical motion analysis, validation of new systems and performance enhancement. Although optical systems are regarded as golden standard with accurate results, the cost of equipment and time needed to capture and postprocess data have led researchers to test other technologies. First, non-optical systems rely on attaching sensors to body parts to send their spatial information to computer wirelessly by means of different technologies, such as electromagnetic and inertial (accelerometry). Finally, markerless systems are adequate for free, unobstructive motion analysis since no attachment is carried by athletes. However, more sensors and sophisticated signal processing must be used to increase the expected level of accuracy.Resumen: En el ámbito del rendimiento deportivo, el objetivo de la captura de movimiento es seguir y registrar el movimiento humano de deportistas para analizar su condición física, rendimiento, técnica y el origen, prevención y rehabilitación de lesiones. En este artículo, se realiza una revisión sistemática de los últimos avances en sistemas de captura de movimiento para el análisis del rendimiento deportivo. Para ello, se buscaron palabras clave en estudios publicados en los últimos cuatro años en las bases de datos electrónicas ISI Web of Knowledge, Scopus, PubMed y SPORTDiscus, dando lugar a 892 registros. Tras borrar duplicados y análisis del resto, se seleccionaron 81 artículos de revista, distribuidos en 53 registros para sistemas ópticos, 15 para sistemas no ópticos y 13 para sistemas sin marcadores. Los registros se clasificaron según las categorías: análisis biomecánico, validación de nuevos sistemas y mejora del rendimiento. Aunque los sistemas ópticos son los sistemas de referencia por su precisión, el coste del equipamiento y el tiempo invertido en la captura y postprocesado ha llevado a los investigadores a probar otras tecnologías. En primer lugar, los sistemas no ópticos se basan en adherir sensores a zonas corporales para mandar su información espacial a un ordenador mediante distintas tecnologías, tales como electromagnética y inercial (acelerometría). Finalmente, los sistemas sin marcadores permiten un análisis del movimiento sin restricciones ya que los deportistas no llevan adherido ningún elemento. Sin embargo, se necesitan más sensores y un procesado de señal avanzado para aumentar el nivel de precisión necesario.

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Acute Effects of Drop-Jump Protocols on Explosive Performances of Elite Handball Players

Iacono

Martone

Padulo

2016

Journal of Strength and Conditioning Research

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Dello Iacono, A, Martone, D, and Padulo, J. Acute effects of drop-jump protocols on explosive performances of elite handball players. J Strength Cond Res 30(11): 3122-3133, 2016-This study aimed to assess the acute effects of vertical and horizontal drop jump-based postactivation potentiation (PAP) protocols on neuromuscular abilities in tasks such as jumping, sprinting, and change of direction (COD). Eighteen handball players were assessed before and after PAP regimens, consisting of either vertical single-leg drop-jumps (VDJ) or horizontal single-leg drop-jumps (HDJ) single-leg drop-jumps, on countermovement jump (CMJ), linear sprint, shuttle sprint, and agility performance. The HDJ led to greater improvement of the COD performance in comparison with the VDJ (-6.8 vs. -1.3%; p ≤ 0.05), whereas the VDJ caused greater improvement in the CMJ task compared with the HDJs (+6.5 vs. +1%; p ≤ 0.05). Moreover, the VDJ regimens compared with HDJ induced greater changes in most of the kinetic variables associated with vertical jumping performance, such as peak ground reaction forces (+9.6 vs. +1.3%), vertical displacement (-13.4 vs. -5.3%), leg-spring stiffness (+18.6 vs. +3.6%), contact time (-9.2 vs. -1.3%), and reactive strength index (+7.3 vs. +2.4%) (all comparisons with p ≤ 0.05). Conversely, the HDJ regimens were able to improve the COD performance only by reducing the contact time on COD more than the VDJ (-13.3 vs. -2.4% with p ≤ 0.05). The results showed that both PAPs were able to improve the performances that specifically featured similar force-orientation production. This investigation showed the crucial role that different and specific PAP regimens play in optimizing related functional performances. Specifically oriented vertical and horizontal single-leg drop-jump protocols represent viable means for achieving enhanced explosive-based tasks such as jumping and COD.

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An alternative approach to describing agility in sports through establishment of a relationship between velocity and radius of curvature

Cited by 5 publications

References 14 publications

Development of Shuttle Run Test With Recorded Data Based on Arduino

Development of Shuttle Run Test With Recorded Data Based on Arduino

Application of motion capture technology for sport performance analysis (El uso de la tecnología de captura de movimiento para el análisis del rendimiento deportivo)

Acute Effects of Drop-Jump Protocols on Explosive Performances of Elite Handball Players

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