Person: ŞAHİN, ŞENAY
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ŞAHİN
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ŞENAY
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Publication Investigation of the thermal comfort of the sportswear by standing thermal manikin and thermal imaging techniques(Sage Publications Ltd, 2023-06-01) Özkan, Esra Taştan; Kaplangiray, Binnaz; Şekir, Ufuk; Şahin, Şenay; KAPLANGİRAY, BİNNAZ; ŞEKİR, UFUK; ŞAHİN, ŞENAY; Mühendislik Fakültesi; Spor Hekimliği Ana Bilim Dalı; 0000-0002-1296-9092 ; 0000-0003-2735-8697 ; AAM-4348-2020; FDE-4794-2022; AAD-9210-2019Garments should not overload the body during activity and should be chosen in accordance with the ambient conditions. Especially in active sports, sportswear should make a person feel comfortable and increase performance by easily removing excess heat and moisture from the body without interrupting physical activity. In this study, five T-shirts with the same size and weight characteristics, but in different yarn types were produced and analysed. The thermal and water vapour resistance properties of these garments were measured using a thermal manikin system. In addition, thermal camera images were taken at 10-minute intervals during the 50-minute wear trial programme, and skin temperatures were measured from the upper front body and the upper back body with two sensors. The results showed that POS and PM-coded garments made of polyester with low clothing insulation (clo) values were statistically different from CS and CPS coded cotton-containing garments in terms of front and back surface thermal camera images. It was observed that cotton-containing garments were more uncomfortable than polyester and Tencel owing to their higher thermal resistance, garment surface temperature, and skin temperature values. The Tencel garment was measured similarly to the CS and CPS coded garments at the beginning of the activity and measured similarly to the POS and PM coded garments at the end of the activity on both surfaces.Publication Effect of different garments on thermophysiological and psychological comfort properties of athletes in a wear trial test(Nature Portfolio, 2023-09-09) Özkan, Esra Tastan; KAPLANGİRAY, BİNNAZ; Kaplangiray, Binnaz; Şekir, Ufuk; ŞEKİR, UFUK; Şahin, Şenay; ŞAHİN, ŞENAY; Ziraat Fakültesi; Tekstil Mühendisliği Bölümü; 0000-0002-1296-9092; AAD-9210-2019; AEE-5817-2022; JHT-0825-2023This paper reports on an experimental investigation of thermophysiological and psychological responses during and after an incremental low- to high-intensity exercise at 27 degrees C and 45% humidity. Five t-shirt garments were produced from different yarn types, their weights and yarn counts were close to each other. During the wear trials, heat and humidity sensors were placed at four body locations (the chest, back, abdomen, and waist). In addition, dynamic comfort measurements of the upper body were examined using a datalogger and subjective rating scales. This study aimed to investigate the effects of garment type on aerobic performance, microclimate temperature and humidity values, and psychological comfort. It was observed that the relative humidity and temperature of the microclimate were low in fabrics with high air permeability and low thermal resistance values of the Tencel single jersey and polyester mesh knitted fabrics. There was a significant difference in microclimate temperature results of TS coded Tencel single jersey t-shirt sample and other t-shirt samples according to statistical analysis results. On the other hand, the statistical results of the PM coded fabric sample measured at lower humidity in the three body regions were found to be a significantly different from those of the other samples (except TS). Although not statistically significant, the VO2 values and heart rates of these fabrics were lower than those of other fabrics. It was concluded that garments made from Tencel single jersey (TS) and polyester mesh (PM) fabrics affected the performance of athletes positively. Athletes were less forced during the training, and the activity could be maintained more than the others when wearing these clothes.Publication The determination of relation among the future time perspectives, academic delay of gratification preferences and burnout levels of prospective teachers(South Ukrainian Natl Univ K D Ushynsky, 2017-01-01) Şahin, Şenay; Şahin, Ersin; Ölcücü, Burçin; ŞAHİN, ŞENAY; ŞAHİN, ERSİN; Spor Bilimleri; 0000-0002-5670-7166; AEE-5817-2022; FDE-4794-2022; DSL-1465-2022The aim of this study is to determine the relation among the future time perspectives, academic delay of gratification and burnout levels of prospective teachers in different fields participating in PPSE (the Public Personnel Selection Examination in Turkey) courses and to compare them according to certain variables. 220 prospective teachers attending PPSE courses in 2012-2013 school year participated in the study. Kruskal-Wallis test was used for more than two variables which do not show normal distribution in intergroup comparisons and Mann-Whitney U test was used for variables, group number of which are two. Significance level was regarded as alpha=.05. A significant difference in favour of females was found in value sub-dimension of future time perspective pursuant to genders of the prospective teachers according to results of the study (p<0.01). A significant difference in favour of university graduates (p<0.05) was noticed in personal success sub-dimension of burnout according to graduation status of the prospective teachers. A significance difference was determined in favour of university graduates (p<0.01) in terms of the academic delay of gratification preferences of them. Moreover, according to the number of taking PPSE of prospective teachers, a significant difference was determined in favour of prospective teachers who took the exam once (p<0.05) with regard to the value sub-dimension of future time perspective and the academic delay of gratification preferences (p<0.05). A significant difference was noticed in favour of prospective teachers who have not any teaching experience (p<0.05) in the value sub-dimension of future time perspective according to the duration of experience. A significant difference was observed in favour of the prospective teachers who have teaching experience in terms of academic delay of gratification preferences (p<0.05).