Metabolic Syndrome, Obesity, Adolescent
Conditions
Brief summary
Pediatric obesity is considered one of the most important public health problems worldwide due to its high prevalence and associated comorbidities. Physical exercise has been shown to have an important role in the treatment of obesity and associated cardiometabolic dysfunction. Small-sided soccer games (SSSG) have been explored as a promising way of increasing physical exercise due to its benefits on cardiometabolic health and high degree of enjoyment, which favors long-term adherence. The objective of this research is to determine the effects of a 16-week high-intensity SSSG-based exercise intervention on cardiometabolic risk factors, physical fitness, adherence to 24-hour movement patterns, enjoyment and adherence to the intervention in adolescents with metabolic dysfunction and compare them to the effects of a traditional soccer intervention. The investigators hypothesize that high-intensity SSSG are more effective in improving the obesity-related cardiometabolic risk profile in adolescents with cardiometabolic dysfunction compared to traditional soccer training. A parallel 3-arm randomized controlled trial will be conducted in adolescents with overweight and metabolic dysfunction between 11 and 15 years of age. The inclusion criteria are: (i) age between 11-15 years at the time of intervention start; (ii) overweight or obesity (BMI\> 85th percentile); (iii) Abdominal obesity ≥90th percentile as assessed by waist circumference or a waist-to-height ratio ≥ 0.5; (iv) willing to participate in the study regardless of possible group allocation; (v) informed consent given by participant and legal representatives. Exclusion criteria: (i) health condition not compatible with participation in physical exercise; (ii) history of recent musculoskeletal injury hindering exercise participation; (iii) concurrent participation in a structured weight loss or exercise program. Those eligible to participate in the study will be randomly assigned to one of three groups: i) SSSG group, ii) traditional soccer play group (TSG), or, iii) non-exercise intervention control group (CG). Participants in both exercise intervention groups will undergo a 16-week intervention. The SSSG group will participate in a high-intensity small-sided soccer games training, while the TSG will undergo a technical and tactical skills training program and traditional soccer training. The CG participants will continue with regular school physical education classes without any additional intervention. Before and after the intervention, all participants will be assessed for cardiometabolic and hepatic biochemical markers, physical fitness, anthropometry and body composition, blood pressure, objective daily physical activity and sleep quality, and perceived enjoyment of participation in SSSG and TSG. The primary outcomes of the study will be waist circumference and cardiorespiratory fitness. The study protocol was approved by the Ethics Committee of the Faculty of Sport of the University of Porto and by the Scientific Ethics Committee of the Adventist University of Chile.
Interventions
Physical exercise intervention
Physical exercise intervention
Sponsors
Study design
Eligibility
Inclusion criteria
* Age between 11-15 years at the time of intervention start * Overweight or obesity (BMI\> 85th percentile) * Abdominal obesity ≥90th percentile as assessed by waist circumference or a waist-to- height ratio ≥ 0.5 * Willing to participate in the study regardless of possible group allocation * Informed consent given by participant and legal representatives
Exclusion criteria
* Health condition not compatible with participation in physical exercise * History of recent musculoskeletal injury hindering exercise participation * Concurrent participation in a structured weight loss or exercise program
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Waist circumference | 16 weeks | Anthropometric measurement of abdominal obesity; cm |
| Cardiorespiratory fitness | 16 weeks | 1-mile walk/run test; minutes to run 1 mile |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Variation in HOMA-IR | 16 weeks | Variation in HOMA-IR after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in glycosylated hemoglobin concentration (mg/dL) | 16 weeks | Variation in Glycosylated hemoglobin concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in high-density lipoprotein cholesterol concentration (mg/dL) | 16 weeks | Variation in High-density lipoprotein cholesterol concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in low-density lipoprotein cholesterol concentration (mg/dL) | 16 weeks | Variation in low-density lipoprotein cholesterol concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in total cholesterol concentration (mg/dL) | 16 weeks | Variation in total cholesterol concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in blood triglycerides concentration (mg/dL) | 16 weeks | Variation in blood triglycerides concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in blood Alanine aminotransferase concentration (U/L) | 16 weeks | Variation in blood Alanine aminotransferase concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in blood Aspartate aminotransferase concentration (U/L) | 16 weeks | Variation in blood Aspartate aminotransferase concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in blood Gamma glutamyl transferase concentration (U/L) | 16 weeks | Variation in blood Gamma glutamyl transferase concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Variation in fasting blood glucose concentration (mg/dL) | 16 weeks | Variation in fasting blood glucose concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
| Hand grip strength | 16 weeks | Hand grip strength test measured with a digital hand dynamometer |
| Lower limb strength | 16 weeks | Assessed by Horizontal jump test. |
| Body composition | 16 weeks | Assessed by the electrical bioimpedance method |
| Body mass index | 16 weeks | Weight and height will be combined to report BMI in kg/m\^2 |
| Neck circumference | 16 weeks | Assessed by anthropometric techniques |
| Blood Pressure (mmHg) | 16 weeks | Systolic and diastolic blood pressure measured with digital sphygmomanometer |
| Physical activity | 16 weeks | Physical activity will be assessed objectively with a triaxial accelerometer used 24h/d during 7 consecutive days. |
| Sleep quality | 16 weeks | Sleep quality will be assessed objectively with a triaxial accelerometer used 24h/d during 7 consecutive days. |
| Perceived enjoyment of physical activity | 16 weeks | Assessed by the Physical Activity Enjoyment Scale questionnaire (PACES). Raw scores are transformed into a scale from 16 to 80. Higher scores correspond to higher perceived enjoyment. |
| 6-minute walk test | 16 weeks | Distance covered walking in 6 minutes. |
| Variation in serum insulin concentration (mU/L) | 16 weeks | Variation in serum insulin concentration after 16 weeks of intervention. Blood samples will be obtained from each subject early in the morning by venipuncture from the antecubital vein, following a 10-h overnight fast. |
Countries
Portugal