None listed
Conditions
Brief summary
This investigation will be novel by assessing both energy expenditure and energy intake across both cold and warm environments. An environmental simulation suite will be used to expose volunteers to a range of temperatures. Their energy expenditure will be assessed through the collection of expired breath and energy intake will be measured by the food each volunteer consumes. We hypothesise that exposure to lower temperatures will increase the drive to eat resulting in higher energy intake and furthermore that this increase will supersede any increases in energy expenditure. If correct, this study will add support to calls to improve the housing stock in New Zealand for direct health benefits.
Interventions
Participants will be exposed to different ambient temperature conditions and their physiological performance monitored. The three different conditions are:
-Cold (13 degrees)
-Normal (23 degrees)
-Warm (33 degrees)
Participants will enter the environmental simulation suite and spend 2 hours exposed to each condition. The exposures will occur on separate days with a minimum 24-hour washout period between experimental conditions. During that time, their cognitive performance will be assessed usin
Participants will be exposed to different ambient temperature conditions and their physiological performance monitored. The three different conditions are: -Cold (13 degrees) -Normal (23 degrees) -Warm (33 degrees) Participants will enter the environmental simulation suite and spend 2 hours exposed to each condition. The exposures will occur on separate days with a minimum 24-hour washout period between experimental conditions. During that time, their cognitive performance will be assessed using a computer-based test. Their resting energy expenditure will be assessed using indirect calorimetry with a hood. Participants will then be provided with a selection of food choices to eat during the final 60 minutes inside the simulation suite. The energy and food choices will be recorded and compared between conditions. All measures will be made by a University research student working towards a PhD.
Sponsors
University of Otago
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Prevention
Masking
Open (masking not used)
Eligibility
Sex/Gender
All
Age
18 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
Inclusion criteria • Healthy individuals (age 18-50 years) • Stable weight and diet for the previous three months • Body mass index <30 kg/m2
Exclusion criteria
Exclusion criteria • Pregnancy • Previous radiographic scan in last 3 months • Body mass index >30 kg/m2
Outcome results
None listed