. 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
Maria C. Madueno, Vincent J. Dalbo, Joshua H. Guy, Kate E. Giamarelos, Tania Spiteri and Aaron T. Scanlan
Aiko Sakurai, Kengo Harato, Yutaro Morishige, Shu Kobayashi, Yasuo Niki and Takeo Nagura
concluded that risk factor was laterally flexed the trunk in the frontal plane toward the side of the injured knee without altering the alignment of the feet. On the other hand, toe direction is known as a critical factor affecting knee biomechanics during various movements. 18 – 21 Tran et al 21
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
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
Billy T. Hulin, Tim J. Gabbett, Rich D. Johnston and David G. Jenkins
during sprinting efforts than jogging and striding activities. 11 In light of the available evidence, accelerometer-derived PlayerLoad variables are likely to increase with concomitant increases in any workload variable (ie, accelerations, decelerations, changes in direction, collision events, or
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
The present article addresses some of the critical issues that are involved in the development of a successful career in applied sport psychology by offering a three-phase model of career direction, development, and opportunities. In particular, educational direction and training, supplemental experience, and sport, exercise, or health involvement are considered. Specific concerns related to these areas are discussed relative to the enhancement of career development and opportunities.
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.
Martin Eubank, Dave Collins and Nick Smith
In the presence of anxiety, threatening stimuli are allocated greater processing priority by high-trait-anxious individuals (Mathews, 1993). As anxiety direction (Jones, 1995) might best account for individual differences, this investigation aimed to establish whether or not such processing priority is a function of anxiety interpretation. Anxiety facilitators and debilitators performed a modified Stroop test (Stroop, 1935) by reacting to neutral, positive, and negative word types in neutral, positive, and negative mood conditions. A significant 3-way interaction, F(4,80) = 3.95, p < .05, was evident, with facilitators exhibiting a processing bias toward positive words in positive mood conditions. The data support the contention that anxiety interpretation is an important distinguishing variable in accounting for processing bias and support the potential contribution of cognitive restructuring practices to athletic performance.
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