Evaluation of energy expenditure at rest and preference for sweet taste during the menstrual cycle (Gasto energético en reposo y preferencia por el sabor dulce durante el ciclo menstrual)
| ISRCTN | ISRCTN12199952 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN12199952 |
| Protocol serial number | 170504007 |
| Sponsors | Fondecyt, Departamento de Nutrición, Diabetes y Metabolismo, Comisión Nacional de Investigación Científica y Tecnológica |
| Funders | Pontificia Universidad Católica de Chile (Santiago), Departamento de Nutrición, Diabetes y Metabolismo |
- Submission date
- 13/10/2017
- Registration date
- 31/10/2017
- Last edited
- 24/01/2019
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Pregnancy and Childbirth
Plain English summary of protocol
Background and study aims
Obesity is increasing worldwide and it affects women in greater proportion. The menstrual cycle is regulated by hormones that influence food intake and energy expenditure. The purpose of this study is to determine the amount of energy that body spends, eating habits and sweet taste preference, in relation to the hormones concentration during the menstrual cycle. This is important to better understand how energy metabolism is regulated in the body and eventually contribute to the prevention and / or treatment of excess weight, particularly in women. This study consists in two sessions during the menstrual cycle of a group of healthy women. The aim of this study is to examine variations in energy expenditure at rest that may be influenced by hormonal variations during the menstrual cycle.
Who can participate?
Healthy women aged 18 to 40 who present regular menstrual cycles without the use of contraceptives.
What does the study involve?
Participants are given a questionnaire and are asked to complete the following screening tests: pregnancy test, past and current medical history, and routine blood testing and to have a registry of the menstrual cycles. Participants are randomly allocated to one of two groups, to know which of the session will be first, corresponding to the menstrual phase. The study includes two sessions. Participants have to come at 8:00 in the morning to start the assessments. The sessions are performed with 15-20 days of interval. In each session procedures are performed: The amount of energy that the body spends (metabolic rate) is measured by determining the amount of breath, by installing a plastic capsule over your head for 20 minutes. And 1 blood samples of 15 ml in total equivalent to 1 tablespoon is taken. Later, is applied a test for determining sweet taste preferences and complete a consumer frequency survey for the consumption of sweet processed foods and also a question about cravings.
What are the possible benefits and risks of participating?
There are no immediate direct benefit to those taking part. However, the information that will be obtained will be useful to know more about the regulation of energy metabolism and could eventually benefit overweight and obese women. The information of the exams practiced will be given to the participants. There are a few risks with associated with blood samples, participants can feel pain when the needle penetrates the skin, as well as they can feel dizzy or fatigued. There is a risk of hematoma, bleeding and infection at the puncture site. The use of sterile techniques and trained personnel will minimize the risks of infection, hematoma and pain. There are also risks during the measurement of oxygen consumption as participants may feel a sense of claustrophobia given the installation of the clear plastic capsule on your head.
Where is the study run from?
Pontificia Universidad Católica de Chile (Chile)
When is the study starting and how long is it expected to run for?
May 2017 to August 2017
Who is funding the study?
Pontificia Universidad Católica de Chile (Chile)
Who is the main contact?
Dr Jose Galgani Fuentes
jgalgani@uc.cl
Contact information
Scientific
Pontificia Universidad Católica de Chile (Santiago)
Departamento de Nutrición, Diabetes y Metabolismo
Alameda 340, interior, 2º patio, 4º Piso
Santiago
8320000
Chile
 ORCID ID |
0000-0001-9793-8561 |
|---|---|
| Phone | +56 2 354 6389 |
| jgalgani@uc.cl |
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Single center randomised crossover study |
| Secondary study design | Randomised controlled trial |
| Study type | Participant information sheet |
| Scientific title | Resting metabolic rate and sweet taste preferences during the menstrual cycle |
| Study acronym | CICLO |
| Study objectives | During the luteal phase there is a higher energy expenditure at rest and sweet taste preference compared to the follicular phase. |
| Ethics approval(s) | Ethical Board at Pontificia Universidad Católica de Chile, 08/06/2017, ref: 170504007 |
| Health condition(s) or problem(s) studied | Resting metabolic rate and sweet taste preferences during the menstrual cycle in healthy women |
| Intervention | The selected participants are randomly assigned to the first session corresponding to the follicular phase or to the luteal phase. Each participant completes two sessions, performed on one day of each phase of the menstrual cycle. The first day of menstrual bleeding is counted as day one of the cycle and representative ranks of days were established for both phases. Tests are started the morning after a night fast of 8 to 12 hours. Weight and body composition are measured. Subsequently, the participant is kept at rest for 30 minutes, the vital signs (axillary temperature, blood pressure and pulse) are measured, and once the indicated time is reached (30 min), energy expenditure is measured by indirect calorimetry. Subsequently an indirect calorimetry correction procedure is performed and a blood sample (15 ml) is taken for further analysis (glucose, insulin, estradiol and progesterone). Finally, a standardized test for determining sweet taste preferences is done (Monell Forced-Choiced, Paired-Comparison Tracking Procedure). A consumer frequency survey is applied for the consumption of processed foods with sweet taste and also a question about cravings. |
| Intervention type | Other |
| Primary outcome measure(s) |
1. Resting Metabolic Rate and Respiratory Quotient is measured using indirect calorimetry for 30 minutes, gas exchange is determined by using a metabolic car (Vmax Encore 29n) |
| Key secondary outcome measure(s) |
1. Consumption of processed foods is measured using a consumer frequency survey at the end of the sweet taste preference procedure at one hour after the start of the session |
| Completion date | 28/08/2017 |
Eligibility
| Participant type(s) | Healthy volunteer |
|---|---|
| Age group | Adult |
| Lower age limit | 18 Years |
| Sex | Female |
| Target sample size at registration | 20 |
| Key inclusion criteria | 1. Healthy women (by physical examination, past and current medical history, and routine blood testing, including biochemical profile, thyroid-stimulating hormone, free thyroxine, electrolytes, creatinine, and hemogram) 2. Between 18 and 40 years old 3. Stable body weight (change <2,5 kg over the past 3 months) 4. IMC: 18.5 – 30 kg/m2 5. Physical activity (<7 hours/wk) 6. Do not take medications 7. Do not use hormonal contraceptives 8. Non smokers 9. Non pregnant 10. Regular menstrual cycles |
| Key exclusion criteria | 1. Women with any disease 2. Younger than 18 years old and older than 40 years old. 3. Unstable weight (change>2 kg over the past 3 months), 4. Physical activity (>7 hours/wk) 5. Taking medications or hormonal contraceptives 6. Pregnant women 7. Irregular menstrual cycles 8. Smokers |
| Date of first enrolment | 08/06/2017 |
| Date of final enrolment | 21/07/2017 |
Locations
Countries of recruitment
- Chile
Study participating centre
Santiago
8320000
Chile
Results and Publications
| Individual participant data (IPD) Intention to share | Yes |
|---|---|
| IPD sharing plan summary | Available on request |
| IPD sharing plan | The datasets generated during and/or analysed during the current study are/will be available upon request from: Lorena Malo- Investigator at loremalovinti@gmail.com. |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Basic results | 12/09/2018 | 12/09/2018 | No | No | |
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
Additional files
- ISRCTN12199952_BasicResults_12Sep18.pdf
- Uploaded 12/09/2018
Editorial Notes
24/01/2019: The intention to publish date was changed from 30/06/2018 to 30/06/2019.
12/09/2018: The basic results of this trial have been uploaded as an additional file.
