The effect of two kinds of T-shirts on physiological and psychological thermal respon

[Mike Bikov]

Appl Ergon. 2010 Apr 26. [Epub ahead of print]
The effect of two kinds of T-shirts on physiological and psychological thermal responses during exercise and recovery.

Brazaitis M, Kamandulis S, Skurvydas A, Daniusevičiūtė L.

Department of Applied Physiology and Physiotherapy, Laboratory of Human Motorics, Lithuanian Academy of Physical Education, Sporto 6, LT-44221 Kaunas, Lithuania.
Abstract

The aim of this study was to investigate the physiological and psychological responses during and after high-intensity exercise in a warm and humid environment in subjects wearing shirts of different fabrics. Eight healthy men exercised on two separate occasions, in random order, wearing two types of long-sleeve T-shirt: one made of polyester (PES) and the other of cotton fabric (CT). They performed three 20 min exercise bouts, with 5 min rest between each, and then rested in a chair for 60 min to recover. The ambient temperature was 25 degrees C and relative humidity was 60%. The exercise comprised of treadmill running at 8 km/h at 1 degrees grade. Rectal temperature, skin temperatures at eight sites, heart rate, T-shirt mass and ratings of thermal, clothing wettedness, and shivering/sweating sensation were measured before the experiment, during the 5 min rest period after each exercise bout, and during recovery. Nude body mass was measured before the experiment and during recovery. The physiological stress index showed that the exercise produced a state of very high heat stress. Compared with exercise wearing the CT shirt, exercise wearing the PES fabric produced a greater sweating efficiency and less clothing regain (i.e., less sweat retention), but thermophysiological and subjective sensations during the intermittent high-intensity exercise were similar for both fabrics. However, skin temperature returned to the pre-exercise level faster, and the thermal and rating of shivering/sweating sensation were lower after exercise in the warm and humid environment in subjects wearing PES than when wearing the more traditional CT fabric.​

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[EMZ]

זה רציני?😵 נגמר מה לחקור בעולם?

 

[Dave Grohl]

Rectal temperature? לא באמת חחחחחחחחחח

בקרוב BSN יצאו עם חולצות פוליאסטר מיוחדות לאימון LOL

 

[DUBINA]

תכלס היום התאמנתי עם חולצת פוליאסטר
לא יודע למה היה לי אימון בן זונה (פלצבו?)