Body Composition of Individuals With Cardiovascular Diseases Submitted to Conventional Cardiac or Virtual Reality Rehabilitation: A Randomized Clinical Trial

Materials and methods Ethical aspects Participants included in the study will be instructed in relation to all procedures that will be performed and sign the informed consent form agreeing to participate in the study (Annex 1), which was approved by the Institutional Ethics Committee (CAAE: CAAE 62437816.4.0000.5515,protocol number 1.865.530) and is in line with CONEP resolution 466/2012.

Experimental design In the first instance, the patients will perform an initial evaluation (Appendix 2) for the detection of comorbidities, diagnosis identification, clinical history, and collection of drug data. The following will be evaluated before and after 8 weeks of intervention: food frequency, food consumption, anthropometric variables, abdominal circumference, body composition, glycemic behavior, and functional capacity.

Food frequency The Food Frequency Questionnaire (FFQ) will be used to analyze the periodicity of food consumption. The FFQ has a space that contains the food and another for the respondent to register how often they consume this food. The frequency is recorded in units of time: days, weeks, months, years, according to the needs of the evaluation. It is considered a practical and easily applied questionnaire, besides being important for studies that associate diet with chronic diseases .

Food consumption The 24-hour food recall (R24h) will be used to measure the current food consumption of the individuals. The R24h is a quantitative assessment of food and beverage intake. It provides detailed information on weight and total volume of portions consumed in the previous 24 hours. This method aims to evaluate the current diet and estimate absolute or relative values of nutrient intake, according to the total of the foods offered to the individual. The recall will be completed by the patients for three consecutive days.

Anthropometric variables Weight and height will be evaluated through anthropometry, using a Filizola® scale (accuracy of 100g), with the patient wearing light, comfortable clothes and barefoot. Height will be measured using a Filizola® stadiometer (0.1 cm accuracy) with the patient barefoot, in the orthostatic position, their back to the marker, feet together, head adjusted to the Frankfurt plane, and the metal bar on the patient's head. The body mass index (BMI) will be calculated based on the patient's weight and height, through the weight / height ratio.