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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| HIIT Group | Experimental | This group will train for 12 weeks |
|
| MICT Group | Active Comparator | This group will train for 12 weeks |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| High-intensity interval training intervention | Other | 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 |
| Measure | Description | Time Frame |
|---|---|---|
| Maximum oxygen uptake (VOâ‚‚max) | VOâ‚‚max (ml/min/kg): Change from Baseline at 12 weeks, measured using a submaximal exercise test based on the Ã…strand-Ryhming protocol | Baseline and after 12 weeks |
| Weight | Weight (kg): Changes in weight from baseline to 12 weeks of intervention. | Baseline and after 12 weeks |
| Height | Height (cm): Changes in height from baseline to 12 weeks of intervention. | Baseline and after 12 weeks |
| Body mass index (BMI) | BMI (kg/m2): Change from Baseline at 12 weeks, calculated by: weight (kg)/ height (m^2) | Baseline and after 12 weeks |
| Body fat percentage | Body fat percentage (%): Changes in body fat assessed by bioelectrical impedance analysis (BIA) | Baseline and after 12 weeks |
| Muscle mass percentage | Muscle mass percentage (%): Changes in muscle mass measured using bioelectrical impedance analysis (BIA) | Baseline and after 12 weeks |
| Waist circumference | 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) | Baseline and after 12 weeks |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Centro Universitario de Tlajomulco, Universidad de Guadalajara | Guadalajara | Jalisco | 45650 | Mexico |
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| Moderate-intensity continuous training intervention | Other | 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). |
|
| Educational sessions | Other | 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. |
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| Waist-to-hip ratio | Waist-to-hip ratio: Changes in waist-to-hip ratio will be calculated by dividing the waist measurement by the hip measurement | Baseline and after 12 weeks |
| Glucose | Glucose (mg/dl): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| Triglycerides | Triglycerides (mg/dl): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| Total cholesterol | Total cholesterol (mg/dl): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| HDL cholesterol | HDL cholesterol (mg/dl): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| LDL cholesterol | LDL cholesterol (mg/dl): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| C-reactive protein (CRP) | CRP (mg/dl): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| Systolic blood pressure (SBP) | SBP (mmHg): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| Diastolic blood pressure (DBP) | DBP (mmHg): Changes from baseline to 12 weeks of intervention | Baseline and after 12 weeks |
| ID | Term |
|---|---|
| D009765 | Obesity |
| D050177 | Overweight |
| ID | Term |
|---|---|
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
| D001835 | Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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