Akademik Veri Yönetim Sistemi
European College Of Sport Scıence Congress , Vienna, Avusturya, 06 Temmuz 2016
Introduction Posture position is one of the factors that effects human’s mental activity (Rice et. al., 2013). In recent studies, neuronal
synchcronization was investigated during resting state using the elite sportsmen, amateur sportsmen and healty control subjects (Del
Percio et. al., 2011). This study aimed to analyze the electrophysiological differences that are observed between different positions during
tasks that are involving working memory activities among the elite sportsmen and healty controls with electroencephalogram. Methods
Subjects (n=3) were asked to rest while sitting, standing up and lying positions (on a hang up bed in a supine position). 16 channel EEG
electrodes have been placed on frontal, parietal, occipital, central and temporal areas. Backwards subtraction from a three digit number
by seven was used as a paradigm to increase the mental workload. Applying this paradigm requires increased working memory. For
each condition, EEG data has been recorded for 3 minutes. After this preprocessing step, EEG data has been epoched using 1 sec windows and the Fourier spectrum has been obtained for each corresponding window. Finally frequency outputs were averaged over
epochs. Results Inline with previous studies, it was observed that the parietal and occipital alpha band powers were decreased when the
subjects open their eyes. During the eyes closed mental activity period, alpha band power was found to be lower than the eyes closed
resting and higher than the eyes open resting period. When the subjects were in the standing upright position, similar results were obtained as in the sitting position tasks. Discussion According to previous studies, it was reported that in elite sportsmen, parietal and
occipital alpha and delta band powers were found to increase more than the alpha and delta values of the control subjects (Babiloni et.
al., 2010). Moreover, in elite athletes cortical activity was found to be greater than the controls while they were standing up on a
force/balance platform (Del Percio et. al., 2009). Our results are also in agreement with the literature. Our research was limited with the
number of subjects that participated in the experiments. Nevertheless, number of the subject are going to be increased. References
Babiloni C, Marzanoc N, Lacobonid M, Infarinatoe F, Aschierif P, Buffod P, Cibelli G, Soricelli A, Eusebid F. (2010). Brain Res Bul, 81,149–156.
Del Percio C, Babiloni C, Marzano N, Lacoboni M, Infarinato F, Vecchio F, Lizio R, Aschieri P, Fiore A, Toràn G, Gallaminij M, Baratto M,
Eusebi F. (2009). Brain Res Bul, 193–200 Del Percio C, Infarinato F, Marzano N, Lacoboni M, Aschieri P, Lizio R, Soricelli A, Limatola C,
Rossini M, Babiloni C. (2011). International Journal of Psychophysiology. Rice JK, Rorden C, Little JS, Parra LC. (2013). NeuroImage. Contact:
cananelifozcan@hotmail.com This research is supported by Marmara University Scientific Research Fund under the project number SAGC-YLP-100615-0251.