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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT03918005
Other study ID # lisianeperin@hotmail.com
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date June 1, 2019
Est. completion date July 31, 2021

Study information

Verified date April 2019
Source Instituto de Cardiologia do Rio Grande do Sul
Contact Lisiane Perin, MsC
Phone +5554999369888
Email lisianeperin@hotmail.com
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Worldwide, in terms of attributable deaths, the main intermediate risk factor for the development of cardiovascular diseases is systemic arterial hypertension, followed by overweight and sustained hyperglycemia. These factors have positively influenced public and private spending on health. The more robust studies showed that age is one of the main determinants of arterial stiffness. However, there is a possibility that other variables, such as elevated glucose levels, obesity, and systemic inflammation itself, as well as insulin resistance are important factors in this scenario. On the other hand, the measurement of the pulse wave velocity is widely acceptable for the evaluation of the arterial stiffness, inferring the cardiovascular risk in different populations. Since arterial stiffness is influenced by hemodynamic forces and inflammatory mediators, which may be related to sodium and glucose balance, it is necessary to evaluate whether a hypocaloric and low glycemic load diet, in a thesis that decreases lipid and inflammatory levels, may have favorable effects on pulse wave velocity in overweight adults.


Description:

The diets will be calculated in Microsoft Excel 2018 software, using tables of nutritional composition, glycemic index and glycemic load, which have foods with high glycemic index or glycemic load (white rice, white bread, corn flakes, mashed potatoes, orange juice (brown rice, whole wheat bread, whole noodles, oat bran, yogurt, milk, apple, pear, peach). The methodology for calculating GC estimates will be based on the FAO / WHO Protocol. The diets will be designed in 1200, 1400, 1600, 1800 and 2000 kcal / day. All participants will be categorized according to one of the five levels of the diet's energy content. In addition, all patients will receive a leaflet with nutritional guidelines according to their diet.

During the study, participants will be required to maintain their medication consumption, if any, as prescribed by a physician. To assess adherence to the diet, participants will consult with a nutritionist on a weekly basis and complete the 24-hour food recall.

It will be measured the pulse wave velocity.This outcome will be evaluated before the beginning of the diets and 6 weeks after the beginning of the diets.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 92
Est. completion date July 31, 2021
Est. primary completion date December 31, 2020
Accepts healthy volunteers No
Gender All
Age group 20 Years to 59 Years
Eligibility Inclusion Criteria:

- Both sex

- Between 20 and 59 years old

- Body mass index = 25.0 kg/m²

- Physically inactive (physical activity <150 min/week)

Exclusion Criteria:

- Pregnant women

- Vegetarians

- Vegans

- Users of dietary supplements

- Smokers

- Alcohol abusers (men: more than 4 doses in a single day or more than 14 doses per week; women: more than 3 doses in a single day or more than 7 doses per week)

- Individuals with a previous diagnosis of hypertension

- Chronic kidney disease

- Type 1 or 2 diabetes mellitus

- Hypothyroidism

- Hyperthyroidism

- Events in the last 6 months (coronary artery disease, acute myocardial infarction, cerebral vascular disease, peripheral arterial disease, or heart failure)

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Low glycemic load diet
Foods with low glycemic index or glycemic load (brown rice, brown bread, whole wheat pasta, oat bran, yogurt, milk, apple, pear, peach)

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Instituto de Cardiologia do Rio Grande do Sul

Outcome

Type Measure Description Time frame Safety issue
Primary Pulse wave velocity The calibrated and validated Mobil-O-Graph® portable monitor (IEM GmbH, Stolberg, Germany) will be used. This module is connected to a computer to record the brachial pulse wave. It performs pulse wave analysis based on the oscillometric method. The arterial pulsation generates pressure oscillations, which are transmitted to the blood pressure cuff and measured by the transducer to be interpreted by a specific software, recording the pulse wave of the brachial artery and deriving a pulse wave from the aortic arch.
All measurements will be performed by the same evaluator on the right side of the volunteer, at rest. Subjects will be instructed to be with empty bladder, not to drink coffee 60 minutes before gauging and alcoholic beverage in the last 24 hours.
The pulse wave velocity will be evaluated before the beginning of the diets and 6 weeks after the beginning of the diets.
6 weeks
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