نتایج جستجو برای: change of direction

تعداد نتایج: 21212677  

Journal: :Journal of Strength and Conditioning Research 2019

Journal: :Journal of Orthopaedic & Sports Physical Therapy 1995

Journal: :Frontiers in physiology 2016
Johnny Padulo Nicola L. Bragazzi Pantelis T. Nikolaidis Antonio Dello Iacono Giuseppe Attene Fabio Pizzolato Juliano Dal Pupo Alessandro M. Zagatto Marcello Oggianu Gian M. Migliaccio

The aim of the present study was to examine the reliability of a novel multi-direction repeated sprint ability (RSA) test [RSM; 10 × (6 × 5-m)] compared with a RSA with one change of direction [10 × (2 × 15-m)], and the relationship of the RSM and RSA with Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1) and jump performances [squat jump (SJ) and counter-movement-jump (CMJ)]. Thirty-six (ma...

Journal: :International journal of sports physiology and performance 2013
Giancarlo Condello Carlo Minganti Corrado Lupo Cinzia Benvenuti Daniele Pacini Antonio Tessitore

The evaluation of change-of-direction (COD) performance is strongly focused on the time spent to perform the test trials, while much less is known about the technical execution adopted during the COD movements. Thus, the purposes of this study were to evaluate (1) the relationship between straight- and COD-sprint tests and (2) the technical execution of COD movements in relation to different ag...

2012
Mehdi Senouci

What type of technical progress is able to increase income per capita, instead of merely translating into higher fertility? To investigate this question, this paper first sets up an OLG growth model with capital, land and endogenous fertility. At each date, children compete with physical capital as a means of saving for the young. This framework is then put into motion by continuous neutral and...

For laterally complex media, it may be more suitable to take a different orientation of thedisplacement vector of Shear-waves. This may change the sign of several imaginary reflections andconversion coefficients to be used in reservoir characterization and AVO (Amplitude Versus Offset)analysis or modeling. In this new convention the positive direction of the displacement vector ofreflected Shea...

Journal: :Signal Processing 2011
Xiao-Feng Gong Zhiwen Liu Yougen Xu

Direction-of-arrival (DOA) estimation based on the array of three-component electromagnetic vector-sensors is considered within a biquaternion framework. A relationship is established between the biquaternion covariance and the combination of both complex covariance and cross-product. By exploiting this relationship, the DOA estimates can finally be obtained by diagonalizing the biquaternion co...

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