title: Novel ventilation design of combining spacer and mesh structure in sports T-shirt significantly improves thermal comfort.
abstract: This paper reports on novel ventilation design in sports T-shirt, which combines spacer and mesh structure, and experimental evidence on the advantages of design in improving thermal comfort. Evaporative resistance (Re) and thermal insulation (Rc) of T-shirts were measured using a sweating thermal manikin under three different air velocities. Moisture permeability index (i(m)) was calculated to compare the different designed T-shirts. The T-shirts of new and conventional designs were also compared by wearer trials, which were comprised of 30 min treadmill running followed by 10 min rest. Skin temperature, skin relative humidity, heart rate, oxygen inhalation and energy expenditure were monitored, and subjective sensations were asked. Results demonstrated that novel T-shirt has 11.1% significant lower im than control sample under windy condition. The novel T-shirt contributes to reduce the variation of skin temperature and relative humidity up to 37% and 32%, as well as decrease 3.3% energy consumption during exercise.
authors: Institute of Textiles and Clothing, The Hong Kong Polytechnic University, QT715, Hung Hom, Kowloon, Hong Kong.
authors: Chao
authors: C
authors: Sun
authors: Institute of Textiles and Clothing, The Hong Kong Polytechnic University, QT715, Hung Hom, Kowloon, Hong Kong. Electronic address: joe.au@polyu.edu.hk.
authors: Joe Sau-chuen
authors: JS
authors: Au
authors: Institute of Textiles and Clothing, The Hong Kong Polytechnic University, QT715, Hung Hom, Kowloon, Hong Kong; Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, T57A Human Ecology Building, Ithaca, NY 14853-4401, United States. Electronic address: jf456@cornell.edu.
authors: Jintu
authors: J
authors: Fan
authors: Aimer Human Engineering Research Centre, Beijing Institute of Fashion Technology, No. 2A, Yinghua Road, North of Heping Street, Chaoyang District, Beijing 100029, China.
authors: Rong
authors: R
authors: Zheng
mesh_terms: D003020:Clothing; D004734:Energy Metabolism; D006801:Humans; D006813:Humidity; D008297:Male; D008348:Manikins; D009757:Nylons; D011091:Polyesters; D012881:Skin Temperature; D013177:Sports; D013546:Sweating; D013784:Textiles; D014691:Ventilation; D055815:Young Adult
chemical_list: D009757:Nylons; D011091:Polyesters
keywords: Sports T-shirt; Thermal comfort; Ventilation design