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Davide Ferioli, Ermanno Rampinini, Andrea Bosio, Antonio La Torre and Nicola A. Maffiuletti

-motion analysis of matches revealed that male players change activity on average every 1 to 3 s performing more than 1000 movements per game. 1 As several studies reported the change of direction (COD) ability to be a main determinant for successful participation in basketball, numerous tests have been developed

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Maria C. Madueno, Vincent J. Dalbo, Joshua H. Guy, Kate E. Giamarelos, Tania Spiteri and Aaron T. Scanlan

. Basketball players often execute sprints while changing directions rapidly. 1 , 10 Therefore, repeated-change-of-direction (RCOD) speed plays an essential role in basketball 1 as players are required to sprint maximally, rapidly decelerate, then reaccelerate frequently. Given changes in direction alter

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Mohamed S. Fessi, Fayçal Farhat, Alexandre Dellal, James J. Malone and Wassim Moalla

, challenges, tackles, and changes of direction. 1 – 3 Intermittent high-intensity training consisting of straight-line (STL) or change-of-direction (COD) running is largely used by coaches to improve aerobic fitness and the ability to accelerate and change direction. 3 – 5 Previous findings 3 , 5 suggest

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David Rodríguez-Osorio, Oliver Gonzalo-Skok and Fernando Pareja-Blanco

The physical abilities associated with accelerations, decelerations, and rapid changes of direction (CODs) are considered key components in the game demands of many team sports. 1 For example, a recent systematic review showed that there are 500 to 3000 changes of activity over the course of a

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Olfa Turki, Wissem Dhahbi, Sabri Gueid, Sami Hmaied, Marouen Souaifi and Riadh Khalifa

Soccer is a sport characterized by an intermittent exercise profile where numerous intense and brief actions are alternated with submaximal work bouts during match games and training sessions. 1 Indeed high-speed displacements with repeated turns, twists, and explosive change-of-direction (COD

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Olfa Turki, Wissem Dhahbi, Johnny Padulo, Riadh Khalifa, Sana Ridène, Khaled Alamri, Mirjana Milić, Sabri Gueid and Karim Chamari

strength, power, speed, and change of direction (COD) performance. 10 – 12 Indeed, average increases of 1.3% in athletic performance have been reported after integrating DS into the warm-up. 13 In a recent report, Silva et al 5 recommended the inclusion of 7 minutes of 7 DS routines after 5 minutes of

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Giancarlo Condello, Carlo Minganti, Corrado Lupo, Cinzia Benvenuti, Daniele Pacini and 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 age categories of young rugby players. Young rugby players (N = 157, age range 8–19 y) completed a test battery composed of a 15-m straight-sprint test (15SS) and a 15-m sprint test performed with 2 changes of direction (15COD). Significant differences were detected between age categories for both tests. Significant correlations were found between 15SS and 15COD. The analysis of the technical execution of the 15COD test showed differences between age categories, with a prevalence of rounded turns up to the U15 category. These findings confirmed the relationship between straight and COD abilities in young male rugby players. Moreover, the new approach introduced by this study, based on the analysis of COD technical execution, revealed that this performance could be conditioned by the age and mastery level of the players.

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Yassine Negra, Helmi Chaabene, Senda Sammoud, Olaf Prieske, Jason Moran, Rodrigo Ramirez-Campillo, Ali Nejmaoui and Urs Granacher

In elite soccer players, both young and old, physical qualities, such as sprinting, jumping, and change of direction (CoD) speed, are major determinants of performance. 1 Indeed, previous studies have demonstrated that elite soccer players are characterized by high levels of muscular strength

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Brian J. McMorrow, Massimiliano Ditroilo and Brendan Egan

RSS training (80% BM) is an effective method of improving sprint performance over 5 and 20 m. 20 Given the potential effects of RSS training on initial acceleration and the role of acceleration in change-of-direction (COD) speed, 22 , 23 RSS training may also have positive impacts on COD and agility

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Giancarlo Condello, Kevin Schultz and Antonio Tessitore

The aim of the current study was to investigate the relationship between straight-sprint and change-of-direction performance. Total sprinting time and split time at 5 m were collected from 44 college football players during a 15-m straight sprint (SS15m) and a 15-m zigzag sprint with two 60° changes of direction (COD15m). Differences in sprinting time between COD15m and SS15m and between COD5m and SS5m were expressed as percentage of decrement at 5 m and 15 m (Δ%5m and Δ%15m). Significant and high correlations emerged between SS15m and COD15m (r = .86, P < .0001), SS5m and SS15m (r = .92, P < .0001), SS5m and COD5m (r = .92, P < .0001), and COD5m and COD15m (r = .71, P < .0001). Δ%5m and Δ%15m showed a range of 1.2–30.0% and 34.9–59.4%, respectively. These results suggested how straight-sprint and change-of-direction performance are similar abilities in college football players, in particular when a smaller angle of the change of direction is considered. Moreover, it seems necessary to have athletes undergo tests that mimic the demands of football game, which is characterized by sprint on short distances and with changes of direction.