The aim of the project is to gain insights into the effects of treadmills at a standing desk and reduced room temperature on back and cardiometabolic health, cognitive performance, thermal comfort, and the associated heating energy requirements of buildings. Healthy young men and women will spend four consecutive days in a controlled laboratory office environment after a baseline visit. During the baseline visit, volunteers are familiarized with the treadmill and start wearing a continuous glucose monitor. The four consecutive laboratory office days are each scheduled from 8:30AM to 04:30PM. In a randomized order, participants the first two office days either at 19°C or 23°C room temperature. The first office day of each temperature conditions is spent only sedentary, while for the second one is regularly interrupted with light walking on the treadmill. Otherwise, the daily routine and test battery will be exactly the same between days, including a standardized breakfast and lunch meal, an attention task in the morning, and frequent subjective thermal comfort ratings and blood pressure measurements. Interstitial glucose as well as heart rate and heart rate variability will be continuously monitored through wearable devices. Treadmill walking will be videorecorded.
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Subjective thermal comfort rating
Timeframe: At regular intervals over each of the four laboratory office days
Interstitial glucose levels
Timeframe: Continuously sampled every 15 min over all four laboratory office days
Working memory assessed by the TAP (Zimmermann & Fimm, 2002) n-back task
Timeframe: 10:00-11:00 AM during each of the four laboratory office days
Divided attention assessed by the TAP (Zimmermann & Fimm, 2002) divided attention task
Timeframe: 10:00-11:00 AM during each of the four laboratory office days