The effect of fatigue on shooting accuracy in basketball: Does performance change after fatigue as age increases? / El efecto de la fatiga en la precisión de tiro en el baloncesto: ¿Cambia el rendimiento después de la fatiga a medida que aumenta la edad?

The aims of this research were (a) to examine the effect of fatigue on shooting accuracy and rating of perceived exertion (RPE) in basketball, and (b) to compare the shooting accuracy and RPE after fatigue between age categories. 89 male basketball players from different age categories participated in the research. The 20 m shuttle run test was applied to create fatigue. RPE and shooting accuracy were measured before and after fatigue protocol. While there was no significant difference in shooting accuracy before and after fatigue in all age categories, RPE was significantly higher. Shooting accuracy quantitatively increased with age before fatigue (except U14). Shooting accuracy after fatigue was significantly different between the groups. As a result; although shuttle run was perceived as “hard-very hard” difficulty in basketball players, it did not create a fatigue that would significantly affect shooting accuracy. However, it was determined that the shooting accuracy after fatigue changed with increasing age. Therefore, this research presents important findings in terms of determining the age categories in which fatigue affects shooting performance in basketball. (AU)

Los objetivos de esta investigación fueron (a) examinar el efecto de la fatiga en la precisión del tiro y el índice de esfuerzo percibido (RPE) en baloncesto, y (b) comparar la precisión del tiro y el RPE después de la fatiga entre categorías de edad. Participaron en la investigación 89 jugadores masculinos de baloncesto de diferentes categorías de edad. Se aplicó la prueba de carrera de ida y vuelta de 20 m para crear fatiga. El RPE y la precisión de tiro se midieron antes y después del protocolo de fatiga. El RPE fue significativamente mayor, aunque no hubo una diferencia significativa en la precisión de tiro antes y después de la fatiga en todas las categorías de edad. La precisión de tiro aumentó cuantitativamente con la edad antes de la fatiga (excepto U14). La precisión de tiro después de la fatiga fue significativamente diferente entre los grupos. Como resultado; aunque la carrera de ida y vuelta se percibía como una dificultad "difícil-muy difícil" en los jugadores de baloncesto, no creaba una fatiga que afectara significativamente la precisión del tiro. Sin embargo, se determinó que la precisión de tiro después de la fatiga cambiaba con el aumento de la edad. Por lo tanto, esta investigación presenta hallazgos importantes en términos de determinar las categorías de edad en las que la fatiga afecta el rendimiento de tiro en baloncesto. (AU)

Heart rate and blood lactate responses during the volleyball match.

This study aimed to examine the heart rate and blood lactate responses of female volleyball players during the match according to the player positions. A total of 24 senior female volleyball players (middle blocker (n = 6), setter (n = 6), spiker (n = 6), and libero (n = 6)) were monitored for heart rate and blood lactate before, during and after a volleyball match. The mean heart rate and blood lactate level of volleyball players were determined 117.2 ± 13.9 bpm, 2.7 ± 1.2 mmol/L during the match. Heart rate was statistically different between all playing positions except middle blockers vs. spikers (p < 0.05). The blood lactate levels between the groups were not statistically different. The setters have the lowest heart rate and the libero players have the highest during the match. All subjects have a heart rate 50-60% and below 50% of their heart rate maximum during more than half of the match duration. These current results can be used by coaches to determine a specific training load based on the heart rate and blood lactate differences between playing positions.