Browsing by Author "KAPLANGİRAY, BİNNAZ"

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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; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Tekstil Mühendisliği Bölümü.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Spor Hekimliği Anabilim Dalı.; 0000-0002-1296-9092; AAD-9210-2019; AEE-5817-2022; JHT-0825-2023
This 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.
Effect of different weft yarns, twill direction, and washing methods on objective hand values of denim fabrics
(Taylor & Francis Inc, 2023-08-18) Özkan, Esra Tastan; Kıratlı, Zeynep; KAPLANGİRAY, BİNNAZ; Şener, Yasemin; 0000-0002-1296-9092; AAD-9210-2019; AAM-3229-2020
Denim fabrics are products that provide durability and ease of use, and are used by young people or people of all ages who prefer comfortable wear in daily life. In this study, the objective hand values of denim fabrics with three weft yarn types (100% cotton elastane, 85% cotton 15% Modal elastane, and 85% cotton 15% Tencel elastane), two twill directions (3/1 Z and S), and four washing processes (bleach, enzyme, rinse, and stone) were investigated. For this purpose, the compressibility, overall flexural rigidity, drape, surface roughness, and shear rigidity values of industrial washed denim fabrics were measured. It was found that there was no statistically significant effect of weft yarn type on objective hand values, and washing differences were statistically significant on the objective hand values of the denim fabrics. The results showed that enzyme-washed fabrics show better hand and lower hardness properties; stone-washed fabrics have a higher fluffy feel, bleach-washed fabrics have worse hand, and rinse-washed fabrics have stiffer and rougher surfaces. It was also observed that the twill direction affects only the shear rigidity values of the denim fabrics.
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; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Spor Hekimliği Anabilim Dalı.; Bursa Uludağ Üniversitesi/Spor Bilimleri Fakültesi/Antrenörlük Eğitimi Bölümü.; 0000-0002-1296-9092 ; 0000-0003-2735-8697 ; AAM-4348-2020; FDE-4794-2022; AAD-9210-2019
Garments 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.