Appalachian State

ASU Recruiting 21, Male Cyclists to Test Sonic Shirts

July 05, 2013
Principal Investigator
David C. Nieman, DrPH, Director of the Appalachian State University Human Performance Laboratory at the North Carolina Research Campus in Kannapolis, NC.   This study is funded by Under Armour.What is the purpose of this research?
Special types of exercise clothing have been advertised to keep individuals drier, cooler, and more comfortable during exercise, especially in the heat. During exercise, clothing acts as a barrier to heat loss from the body, especially by preventing sweat from evaporating on the skin.  Clothing construction, fit, and fabric are all critical influences on the amount of sweat absorbed from the skin and transported throughout the clothing. The Under Armour Sonic shirt is made up of smooth fabric with four-way stretch that provides comfort and compression without restriction.  This shirt is advertised to wick sweat away from body, allowing the exercising individual to feel cooler and dryer.  Under Armour has devised some new Sonic shirts that will be tested in this pilot project.  The purpose of this project is to determine if sweat evaporation is more efficient when cyclists wear three newer forms of the Sonic shirt compared to an older Sonic shirt and no shirt at all during one hour of intense cycling at 65-75% maximal Watts.

Why am I being invited to take part in this research?

 You will be one of 21 male cyclists in this study at the ASU-NCRC Human Performance Lab in Kannapolis, NC.  You are being invited to take part in this research because you are a male between the ages of 18 and 55 years, a cyclist or triathlete that competes in long distance road races, and can cycle 60 minutes at race pace on a CompuTrainer in a laboratory setting for five days in a row.What will I be asked to do?
The research procedures will be conducted at the Human Performance Laboratory (Room 1201, Plants for Human Health Institute Building, 600 Laureate Way), operated by Appalachian State University at the North Carolina Research Campus (NCRC) in Kannapolis, NC.  You will need to come here six times during the study, once for baseline testing (VO2max and body fat) and orientation, and then 5 days in a row for afternoon 60-minute cycling bouts.   You will complete five 1-hour cycling bouts at 65-75% Wattsmax while in randomized order wearing no shirt, the old Sonic shirt, or one of three newly designed Sonic shirts. After a 5-minute warm-up, you will cycle on your own bicycle on CompuTrainers at 65% Wattsmax for 5 minutes, and then 75% Wattsmax for 5 minutes, and continue this varied intensity regimen for 60 minutes. A fan will be positioned four feet in front of you set on “low”.

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