Abstract Theme

Neuroscience and sport

Type Presentation

Poster

Abstract Authors

Presenter Daniel Traina Gama - Federal University of Grande Dourados (UFGD) (Education) - BR
Paulo Ricardo Higassiaraguti Rocha - University of São Paulo (USP) (Physical Education) - BR
Mario Sergio Vaz da Silva - Federal University of Grande Dourados (UFGD) (Education) - BR

Abstract Resume

Background: 
Double trap`s athletes must shoot several times to two plates simultaneously released and flying in high speed to contrary directions. Double trap`s performance is highly dependent of athlete`s
control in many domains, such as motor, physical and psychological. Domains control is related to Autonomous Nervous System (ANS) modulation and Heart Rate Variability (HRV) analyses are used to
measure ANS sympathetic and parasympathetic modulation. The aim of this study is to show the relation of a Double trap`s Elite Athlete performance with ANS modulation.
Methods:
Heart Rate data series (interval R-R) were collected during two days of Double trap simulation proof from an Elite Athlete during preparation for London 2012 - Olympic Games. HRV analyses were run
according to performance behavior: (a) before error, (b) during error, (c) after error combined with hits, (d) hits without error (minimal six doubles before and after hits sequence). HRV analyses
variables were identified for ANS modulation assessment: Spectral, Low Frequencies normalized units (LF nu), High Frequencies absolute units (HF abs) and LF/HF; Symbolic, 0 Variation (0V) and 2
Different Variations (2DV); and conditional entropy, Normalized Complexed Index (NCI). Being that LF nu and 0V are related to sympathetic modulation; HF abs and 2DV to parasympathetic; LF/HF to
sympathovagal balance; and NCI to adaptive ability. One-way ANOVA was conduct to verify the effect of each HRV variable on performance’s behaviors.
Results:
Data Analyses showed that ANS modulation significantly changed across the athlete’s performance behaviors.  Parasympathetic modulation (HF abs)  was higher  after error combined with hits and during
hits without error (means = 125.1 and 122.1 cm2)  compared with before error and during error (means = 68.8 and 73.7 cm2), p < 0.01, partial η2 = 0.45, and (2DV) showed no differences; Sympathetic
modulation (LF nu) was higher during error (mean = 75.1%)  compared with hits without error (mean = 66.3%), p < 0.05, partial η2 = 0.32, and (0V) was higher before error (mean = 43.6%) compared with
hits without error (mean = 30.8%), p < 0.05, partial η2 = 0.31; Sympathovagal balance was higher during hits without error (mean = 2.33) compared with during error (mean = 4.01), p < 0.05, partial η2
= 0.31; and Adaptive ability (NCI) was higher after error combined with hits (mean = 0.68) compared with before error (mean = 0.55), p < 0.05, partial η2 = 0.30.
Conclusions: 
Shooting hits were related with parasympathetic modulation and sympathovagal balance, while the errors were related with the prevalence of sympathetic modulation. Adaptive ability is related with
parasympathetic modulation and with major importance for domains control during sports performance. The results of the present study indicate that the athlete`s domains control was dependent of
parasympathetic modulation.