scholarly journals DETERMINATION OF FEMALE TABLE TENNIS SPORT PERFORMANCE BY SENZOR MOTORIC REACTION TIME

GYMNASIUM ◽  
2017 ◽  
Vol XVII (2) ◽  
Author(s):  
Henrieta Hornigova ◽  
Ladislava Dolezajova ◽  
Jaromir Sedlacek ◽  
Peter Sagat ◽  
Gheorghe Balint

In the sport performance structure of table tennis is sensor motor reaction time one of the most important factors for reaching top-level results, both in males and females groups. In this research we watched 23 female table tennis players from Slovakia; 9 mini cadets (12-13 years), 6 cadets (14-15 years) and 8 juniors (16-18 years). Girls were tested by modified agility test for table tennis players (Vacenovsky & Vencurik, 2013) with machine FITRO Agility check. Thus we gained their sensor motor reaction times. By Mann-Whitney U-test we studied differences between age categories, upper and lower extremities, dominant (forehand) and un-dominant (backhand) side, right and left-handed players. We used significance level p<0.05. In our research we did not confirm expected results that the older groups have shorter sensor motor reaction time. We also expected shorter reaction time of upper extremities comparing lower extremities; this was confirmed, though there was found statistical significant difference only in juniors group. Groups of mini-cadets and cadets have better (shorter) sensor motor reaction time from backhand side, while group of junior is better from forehand side. We also confirmed that left-handed players have slightly shorter reaction time.

2019 ◽  
Vol 19 (4) ◽  
pp. 467-477 ◽  
Author(s):  
Carlos Castellar ◽  
Francisco Pradas ◽  
Luis Carrasco ◽  
Ana De La Torre ◽  
José Antonio González-Jurado

Author(s):  
Cosmin Miha Moca ◽  
Dan Mihai Gherţoiu

ABSTRACT. Introduction. Reaction is a purposeful voluntary response to an external stimulus. There is certain time period between application of external stimulus and appropriate motor response to the stimulus called the reaction time. Objectives. The aim of this paper was to determine if different colour contrasts affects the reaction time of young tennis players. Materials and Methods. The participants in this study were young tennis players (N = 10), 3 females and 7 males, with the ages between 12 to 13 years old. Results. There was a significant difference in the scores for white background (M=7.5, SD=1.51) and orange background (M=6, SD=0.81) conditions; t(9)=3.30, p = 0.009. Conclusion. Our study managed to show that a different kind of background colour can affect the reaction accuracy in identifying an object of different shape and colour than the background.


2019 ◽  
Vol 19 (6) ◽  
pp. 1038-1051
Author(s):  
F. Moya-Vergara ◽  
D. Curotto-Berruezo ◽  
P. Valladares-Arellano ◽  
E. Arriaza-Ardiles ◽  
T. Valverde-Esteve ◽  
...  

1978 ◽  
Vol 4 (5) ◽  
pp. 377-387 ◽  
Author(s):  
Paul E. Panek ◽  
Gerald V. Barrett ◽  
Harvey L. Sterns ◽  
Ralph A. Alexander

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 115-115
Author(s):  
I V Chueva ◽  
K N Dudkin

Visual short-term memory was tested in a delayed-discrimination task on rhesus monkeys before and after a systemic injection of the antioxidant oxymetacil (4 – 7 mg kg−1). Monkeys had to discriminate stimuli with different visual attributes (colour, orientation, spatial frequency, size, contrast, spatial relationships between visual objects) by a delayed (0 – 32 s) instrumental reflex. Oxymetacil had no influence upon visual discrimination without delay, but after injection of this drug the delayed discrimination (associated with mechanisms of short-term memory) of different stimuli was significantly improved. Oxymetacil increased the duration of short-term storage of spatial information by a factor of 2 – 4 and decreased motor reaction time. Application of oxymetacil in the same doses produced similar results for delayed discrimination of black-and-white gratings, or geometrical figures of different orientations and size. The duration of short-term information storage was doubled or trebled and the motor reaction time was decreased. If monkeys were required to discriminate colour figures, the duration of short-term information storage was also doubled, being longer than for any of the other tasks. The results are discussed in terms of effects on cortical interregional synchronisation mechanisms responsible for control processes such as attention.


1990 ◽  
Vol 52 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Piotr Jaśkowski ◽  
Antoni Pruszewicz ◽  
Piotr Świdzinski

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