Abstract
Y-shaped agility test is a reactive agility test that includes both sensory and motor components. However, there is a lack of information about the contribution of these components to reactive agility in basketball players. Therefore, this study investigates: (i) the relationship between Y-shaped agility performance and reaction speed, sprint speed, change of direction speed, muscle strength, and (ii) determinants of this reactive agility test. Eleven male basketball players performed a Y-shaped agility test, 5 m and 20 m sprints, a 505 Agility test, squat, countermovement and drop jumps, and simple and two-choice reaction time tests. The results revealed a significant relationship between the time in Y-shaped agility test and 5 m sprint time (r = 0.795, p = 0.003, R2 = 0.632), 20 m sprint time (r = 0.676, p = 0.022, R2 = 0.457), and reactive strength index (r = −0.619, p = 0.042, R2 = 0.383), but not with simple and choice-based reaction times. These findings indicate that performance in the Y-shaped agility test is more profoundly determined by a motor rather than a sensory component. This may be ascribed to the structure of a predominantly velocity-oriented Y-shaped agility test with a small contribution of responses to visual stimuli. The adaptation of basketball players to training aimed at increasing speed and strength may also play a role. The structure of the Y-shaped agility test should be modified so as to better reflect the sensory component of reactive agility and more sensitively reveal within- and between-group differences.
Highlights
Agility is defined as “a rapid whole-body movement with change of velocity or direction in response to a stimulus” and is considered to be important for many sports [1]. Some authors use this term when the rapid movement of the body does not involve a reaction to a stimulus and the task is pre-planned [2,3]. It usually denotes a change of direction speed (CODS), which is an independent ability with only a small aspect of agility performance [4]
The reactive strength is associated with the short contact time, it may explain the significant relationship between the time in the Y-shaped agility test and RSI in the drop jump
The Y-shaped agility performance under reactive conditions is associated with the 5 m and 20 m sprint times and reactive strength index in basketball players
Summary
Some authors use this term when the rapid movement of the body does not involve a reaction to a stimulus and the task is pre-planned [2,3] Nowadays, it usually denotes a change of direction speed (CODS), which is an independent ability with only a small aspect of agility performance [4]. The term “reactive agility” was created to make a clear distinction between the pre-planned change of direction speed and agility, including the perceptual and decision- making element [1,5,6]. The second component consists of the perceptual and decision-making factors [7] Later, this model was modified and agility in invasion sports was determined by the cognitive, physical, and technical aspects [4]. Most studies have assessed only the motor component (physical factors) and fewer have assessed the sensory component (perceptual and decision-making factors) of reactive agility [1,6,7,8,9,10]
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