Thirst
Conditions
Brief summary
The purpose of this study is to determine if water and three different sugary beverages (milk, Orange juice and iced tea) have the same effect on thirst.
Detailed description
Participants should be in the laboratory at 8.00 in order to collect the values of weight, height, total body water, intracellular water and extracellular water in a Segmental Multi Frequency Body Composition Monitor (TANITA MC 180 MA®). Then, a blood sample will be collected for analysis of blood glucose, osmolality and plasmatic sodium. They will sit at individual tables for the duration of the session and were allowed to read, listen to music with earphones, or use their portable computers with the exception of internet access to minimize visual cues (e.g., unwanted publicity for beverages or visiting Web sites showing pictures of food and drinks), which may have effect on thirst. Breakfast will be served at 9.30 on every occasion and preload stimuli will be offered exactly 60 minutes after breakfast (at 10.30). Lunch will be provided at 13.00. Motivational ratings will be first obtained at the end of collection of blood sample (baseline or time 0) and every 30 minutes thereafter until the lunch time (times 1 through 7). After lunch (time 8), participants will complete the last set of ratings and will bring a food diary to record all food and fluid intake until 00.00 that day.
Interventions
BEHAVIORALEffect of ingestion of different Sugary Beverages on Thirst Sensation
The participants will drink Water (control group),Non-fat Milk, Orange Juice and Iced Tea. The beverages will be presented chilled but without ice in 330 ml portions in opaque plastic containers and participants will be asked to consume the entire amount within 15 min.
Sponsors
Universidade do Porto
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
DIAGNOSTIC
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* body mass index(BMI) between (18,5 - 27,5 kg/m2) * regular consumers of breakfast * stable in weight for the past 6 months * not dieting to gain or lose weight * like all drinks and food available in study
Exclusion criteria
* pregnant and nursing women * smokers * athletes * subjects under medication(except oral contraceptives in women)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Motivational Ratings | 1 day | Participants will rate their hunger, thirst, nausea, mouth dryness, desire to eat, desire to drink using nine point category scales. The unipolar adjective scales were anchored at each end with labels: 1 = not at all and 9 = extremely. Participants also rated their liking for the beverage along nine point hedonic preference scales where 1 = dislike extremely and 9 = like extremely. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Amount of water ingested | 1 day | After the ingestion of 3 preloads with the beverages in study, the participants will lunch the same meal with free water ingestion. |
| Food Behavior After Intervention | 1 day | After lunch, participants will bring a food diary to record all food and fluid intake until 00.00 that day. Then, we will analyse total calories ingested, total fluid ingested and the volume of sugar and sugary beverages ingested. |
| Glycaemia | 1 day | Glycaemia will be assessed before and after the ingestion of beverages |
| Plasmatic Sodium | 1 day | Plasmatic sodium will be measured before and after the ingestion of the beverages. |
| Hydration parameters | 1 day | Total body water, intra and extracellular body water will me measured before and after the ingestion of the beverages |
| Blood osmolality | 1 day | Blood osmolality will be assessed before and after the ingestion of beverages |
Countries
Portugal
Outcome results
None listed