Obesity & Overweight
Conditions
Keywords
obesity, HIIT, MICT
Brief summary
The objective of the present project is to compare the effects of two types of training on cardiovascular health components and physical fitness in young adults with obesity.
Detailed description
Obesity represents a serious public health problem, and its prevalence continues to rise worldwide. Numerous studies have documented the positive effects of moderate-intensity continuous training (MICT) on cardiovascular and metabolic health in individuals living with obesity; however, the effects of high-intensity interval training (HIIT) are still being explored. Therefore, the objective of the present research protocol is to analyze and compare the effects of an MICT program and an HIIT program on cardiometabolic biomarkers and physical fitness in young adults with obesity.
Interventions
The HIIT group will undergo training for 12 weeks, with a frequency of three sessions per week, completing a total of 36 sessions. Each session will include a 5-minute warm-up and a 5-minute cool-down at 50-60% of maximum heart rate (HRmax). The training protocol will consist of 2-minute high-intensity intervals performed at 90-95% HRmax, corresponding to a Borg rating of perceived exertion (RPE) of 17-18, alternated with 2-minute recovery periods at 70% HRmax (RPE 12-14). A total of five intervals will be completed per session, resulting in an overall high-intensity workload of 18 minutes. All training sessions will be conducted on a stationary cycle ergometer
OTHERModerate-intensity continuous training intervention
The MICT group will perform moderate-intensity continuous training at 60-70% HRmax, corresponding to an RPE of 12-14, for 35-45 minutes on a stationary cycleergometer. Heart rate and physical activity levels will be continuously monitored in both groups using a chest-strap heart rate sensor (Polar H9, Polar Electro, Finland).
OTHEREducational sessions
In addition, four educational sessions will be conducted to provide dietary recommendations to all participants. These sessions will aim to promote balanced eating habits and to discourage the excessive consumption of ultra-processed foods or alcohol, as these factors could interfere with the intervention outcomes.
Sponsors
Centro Universitario de Tlajomulco, Universidad de Guadalajara
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 35 Years
Healthy volunteers
No
Inclusion criteria
* Young adults * BMI ≥ 30 kg/m\^2 and \< 40 kg/m\^2 * Signed informed consent form
Exclusion criteria
* Participants who smoke * Clinical diagnosis of hypothyroidism * Clinical diagnosis of type 1 diabetes mellitus * Clinical diagnosis of type 2 diabetes mellitus * Clinical diagnosis of grade 3 obesity * Clinical diagnosis of hypertension * Clinical diagnosis of acute myocardial infarction or angina pectoris * Use of nitrates and calcium channel blockers within 4 days prior to the start of the study * Use of beta-blockers or hypoglycemic agents within 7 days prior to the intervention * Pregnant women * Breastfeeding women * Men consuming more than 40 g of alcohol per day or women consuming more than 20 g per day * Postural and biomechanical disorders (knee, foot, and spine)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| C-reactive protein (CRP) | Baseline and after 12 weeks | CRP (mg/dl): Changes from baseline to 12 weeks of intervention |
| Maximum oxygen uptake (VO₂max) | Baseline and after 12 weeks | VO₂max (ml/min/kg): Change from Baseline at 12 weeks, measured using a submaximal exercise test based on the Åstrand-Ryhming protocol |
| Weight | Baseline and after 12 weeks | Weight (kg): Changes in weight from baseline to 12 weeks of intervention. |
| Height | Baseline and after 12 weeks | Height (cm): Changes in height from baseline to 12 weeks of intervention. |
| Body mass index (BMI) | Baseline and after 12 weeks | BMI (kg/m2): Change from Baseline at 12 weeks, calculated by: weight (kg)/ height (m\^2) |
| Body fat percentage | Baseline and after 12 weeks | Body fat percentage (%): Changes in body fat assessed by bioelectrical impedance analysis (BIA) |
| Muscle mass percentage | Baseline and after 12 weeks | Muscle mass percentage (%): Changes in muscle mass measured using bioelectrical impedance analysis (BIA) |
| Waist circumference | Baseline and after 12 weeks | Waist circumference (cm): Changes in waist circumference will be measured using a Lufkin measuring tape (USA) following the guidelines of the International Society for the Advancement of Kinanthropometry (ISAK) |
| Waist-to-hip ratio | Baseline and after 12 weeks | Waist-to-hip ratio: Changes in waist-to-hip ratio will be calculated by dividing the waist measurement by the hip measurement |
| Glucose | Baseline and after 12 weeks | Glucose (mg/dl): Changes from baseline to 12 weeks of intervention |
| Triglycerides | Baseline and after 12 weeks | Triglycerides (mg/dl): Changes from baseline to 12 weeks of intervention |
| Total cholesterol | Baseline and after 12 weeks | Total cholesterol (mg/dl): Changes from baseline to 12 weeks of intervention |
| HDL cholesterol | Baseline and after 12 weeks | HDL cholesterol (mg/dl): Changes from baseline to 12 weeks of intervention |
| LDL cholesterol | Baseline and after 12 weeks | LDL cholesterol (mg/dl): Changes from baseline to 12 weeks of intervention |
| Systolic blood pressure (SBP) | Baseline and after 12 weeks | SBP (mmHg): Changes from baseline to 12 weeks of intervention |
| Diastolic blood pressure (DBP) | Baseline and after 12 weeks | DBP (mmHg): Changes from baseline to 12 weeks of intervention |
Countries
Mexico
Outcome results
None listed