Adherence to the Mediterranean Diet and Arterial Blood Pressure in Schoolchildren: The Role of Parental Eating Habits
Abstract
1. Introduction
2. Materials and Methods
2.1. Study Design and Participants
2.2. Bioethics
2.3. Inclusion and Exclusion Criteria
2.4. Measurements
2.4.1. Children’s Screening
- Sociodemographic characteristics: Age (years) and gender (female/male).
- Anthropometric indices: A flat scale with light clothing was used to measure body weight, while a calibrated stadiometer with an accuracy of 0.1 cm was used to measure height. The z-scores for BMI-for-age, weight-for-age, and height-for-age were calculated according to WHO growth reference data for boys and girls aged 5 to 19 years old [13]. The International Obesity Task Force (IOTF) established age- and sex-specific body mass index cut-off criteria that were used to evaluate the weight status of the participants [14]. Consequently, they were classified into four categories: underweight, normal weight, overweight, and obese. Waist and hip circumferences were measured with a flexible non-stretch tape without clothes. Waist circumference was measured in the middle, between the lowest rib and the iliac crest, using an inelastic measuring tape to the nearest 0.1 cm, while hip circumference was measured between the greater trochanter and the lower buttock level. To define abdominal adiposity, the waist-to-hip ratio was used.
- Eating habits: The KIDMED score (range from −4 to 12), a quality index intended for children and adolescents, was used to evaluate adherence to the Mediterranean Diet [15]. A score of +1 was assigned to dietary behaviors that show a favorable aspect to this dietary pattern, while a score of −1 was assigned to dietary practices that have unfavorable associations. Lower adherence to the Mediterranean diet was indicated by lower scores, while higher devotion was shown by higher scores.
- Clinical parameters: BP was measured in the right arm by using standard procedures [16]. A validated automated oscillometric device (OMRON M3, HEM-7154-E, Omron Corporation (Kyoto, Japan)) suitable for children was used to measure BP. Using a cuff size chosen based on the child’s mid-upper arm circumference, measurements were taken on the child’s right upper arm. Children were told to sit quietly, with their backs supported, feet flat on the ground, and arms at the level of the heart. Following a minimum of five minutes of rest, two consecutive BP measures were obtained. During the procedure, the children were instructed not to move or speak. The mean value of two BP measurements that were obtained at least two minutes apart was used in the present work [17].
2.4.2. Parental Screening
- Sociodemographic characteristics: The sociodemographic data were age (years), gender (female/male), and level of education (secondary/tertiary/postgraduate education).
- Eating habits: A semi-quantitative, validated, and reproducible food frequency questionnaire was used to evaluate dietary habits [18]. The consumption of several food groups (including red meat and meat products, poultry, fish, milk or other dairy products, fruits, vegetables, legumes, olive oil, and beverages, including alcohol), was assessed. Finally, the level of adherence to the Mediterranean Diet was assessed using the MedDietScore (range: 0–55) [19]. Lower values indicated lower adherence, while higher values indicated greater adherence.
2.5. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
BMI | Body mass index |
DBP | Diastolic blood pressure |
SBP | Systolic blood pressure |
WAz | Weight-to-age z-score |
HAz | Height-to-age z-score |
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Children (N = 102) | Age (years) | 12.2 ± 3.2 |
Female, n (%) | 46 (45) | |
Weight (kg) | 51.6 ± 19.8 | |
WAz | 0.63 ± 1.2 | |
Height (cm) | 152 ± 19.6 | |
HAz | 0.05 ± 1.3 | |
Waist circumference (cm) | 71.7 ± 11.7 | |
Hip circumference (cm) | 84.6 ± 17.5 | |
Waist-to-hip ratio | 0.89 ± 0.2 | |
z-BMI | 0.62 ± 1.6 | |
Normal weight, n (%) | 50 (49) | |
KIDMED (−4 to 12) | 5.56 ± 2.6 | |
SBP (mm Hg) | 109 ± 12 | |
DBP (mm Hg) | 68 ± 9.1 | |
Parents (N = 102) | Female, n (%) | 86 (84) |
Secondary education, n (%) | 37 (36.3) | |
Tertiary education, n (%) | 36 (35.3) | |
Postgraduate education, n (%) | 29 (28.4) | |
MedDietScore (0–55) | 32.0 ± 4.1 |
First Tertiary Low (n = 19) | Second Tertiary Medium (n = 44) | Third Tertiary High (n = 39) | p | ||
---|---|---|---|---|---|
Children (N = 102) | Age (years) | 13.4 ± 3.7 | 12.4 ± 3.0 | 11.3 ± 3.3 | 0.08 |
Female, n (%) | 7 (37) | 24 (55) | 19 (49) | 0.43 | |
Weight (kg) | 59 ± 19 | 51 ± 18 | 48 ± 22 | 0.12 | |
WAz | 0.89 ± 0.9 | 0.48 ± 1.1 | 0.67 ± 1.5 | 0.47 | |
Height (cm) | 159 ± 21 | 152 ± 18 | 147 ± 19 | 0.06 | |
HAz | 0.28 ± 1.3 | −0.02 ± 1.1 | 0.01 ± 1.53 | 0.70 | |
Waist circumference (cm) | 77 ± 8.4 | 71 ± 10 | 70 ± 14 | 0.10 | |
Hip circumference (cm) | 95 ± 12 | 84 ± 16 | 81 ± 19 | 0.01 | |
Waist-to-hip ratio | 0.83 ± 0.13 | 0.88 ± 0.21 | 0.91 ± 0.22 | 0.39 | |
z-BMI | 0.81 ± 1.3 | 0.43 ± 1.8 | 0.75 ± 1.5 | 0.57 | |
Normal weight, n (%) | 8 (42) | 25 (57) | 17 (44) | 0.36 | |
SBP (mm Hg) | 120 ± 11.7 | 109 ± 8.7 | 106 ± 13.9 | <0.001 | |
DBP (mm Hg) | 73 ± 9.3 | 66 ± 8.4 | 67 ± 8.9 | 0.009 | |
Parents (N = 102) | Female, n (%) | 17 (90) | 36 (82) | 33 (85) | 0.74 |
Secondary education, n (%) | 8 (42) | 14 (31) | 15 (38) | 0.84 | |
Tertiary education, n (%) | 7 (37) | 17 (39) | 12 (31) | ||
Postgraduate education, n (%) | 4 (21) | 13 (30) | 12 (31) | ||
MedDietScore (0–55) | 31 ± 4.7 | 32 ± 4.1 | 32 ± 3.9 | 0.49 |
First Tertiary Low (n = 31) | Second Tertiary Medium (n = 32) | Third Tertiary High (n = 39) | p | ||
---|---|---|---|---|---|
Children (N = 102) | Age (years) | 12.9 ± 3.2 | 12.4 ± 3.4 | 11.4 ± 3.3 | 0.15 |
Female, n (%) | 12 (39) | 14 (44) | 24 (62) | 0.13 | |
Weight (kg) | 58 ± 21 | 51 ± 20 | 45 ± 18 | 0.03 | |
WAz | 0.83 ± 1.4 | 0.71 ± 1.2 | 0.41 ± 1.1 | 0.33 | |
Height (cm) | 154 ± 20 | 154 ± 18 | 148 ± 20 | 0.40 | |
HAz | −0.16 ± 1.3 | 0.36 ± 1.37 | −0.03 ± 1.2 | 0.26 | |
Waist circumference (cm) | 78 ± 13 | 70 ± 13 | 69 ± 8.3 | 0.03 | |
Hip circumference (cm) | 91 ± 14 | 83 ± 22 | 82 ± 14 | 0.07 | |
Waist-to-hip ratio | 0.87 ± 0.11 | 0.91 ± 0.31 | 0.88 ± 0.15 | 0.75 | |
z-BMI | 1.1 ± 1.1 | 0.65 ± 1.2 | 0.26 ± 2.1 | 0.12 | |
Normal weight, n (%) | 14 (45) | 16 (50) | 20 (51) | 0.81 | |
SBP (mm Hg) | 115 ± 13 | 109 ± 12 | 105 ± 10 | <0.001 | |
DBP (mm Hg) | 72 ± 8.4 | 67 ± 8.2 | 65 ± 9.2 | 0.004 | |
KIDMED score (−4 to 12) | 5.29 ± 2.6 | 6.25 ± 2.5 | 5.21 ± 2.8 | 0.20 | |
Parents (N = 102) | Female, n (%) | 21 (68) | 31 (97) | 34 (88) | 0.005 |
Secondary education, n (%) | 14 (45) | 13 (41) | 10 (26) | 0.07 | |
Tertiary education, n (%) | 11 (35) | 10 (31) | 15 (38) | ||
Postgraduate education, n (%) | 6 (19) | 9 (28) | 14 (36) |
(A) b ± SE, for KIDMED | p | (B) b ± SE for MedDietScore | p | ||
---|---|---|---|---|---|
SBP | Model 1: KIDMED (A) or MedDietScore (B) | −1.70 ± 0.44 | <0.001 | −1.22 ± 0.28 | <0.001 |
Model 2: Model 1 + child’s age | −1.22 ± 0.44 | 0.006 | −1.01 ± 0.26 | <0.001 | |
Model 3: Model 2 + child’s sex | −1.23 ± 0.44 | 0.006 | −1.05 ± 0.27 | <0.001 | |
Model 4: Model 3 + child’s z-BMI | −1.35 ± 0.41 | 0.001 | −0.89 ± 0.26 | 0.001 | |
Model 5: Model 4 + parents’ sex | −1.32 ± 0.41 | 0.002 | −1.01 ± 0.27 | <0.001 | |
Model 6: Model 5 + parents’ education level | −1.34 ± 0.41 | 0.002 | −1.01 ± 0.27 | <0.001 | |
Model 7: Model 6 + MedDietScore (A) or KIDMED (B) | −1.33 ± 0.39 | <0.001 | −1.01 ± 0.25 | <0.001 | |
DBP | Model 1: KIDMED (A) or MedDietScore (B) | −0.70 ± 0.34 | 0.04 | −0.78 ± 0.21 | <0.001 |
Model 2: Model 1 + child’s age | −0.65 ± 0.35 | 0.07 | −0.77 ± 0.21 | <0.001 | |
Model 3: Model 2 + child’s sex | −0.67 ± 0.36 | 0.06 | −0.78 ± 0.22 | <0.001 | |
Model 4: Model 3 + child’s z-BMI | −0.71 ± 0.36 | 0.048 | −0.75 ± 0.22 | <0.001 | |
Model 5: Model 4 + parents’ sex | −0.73 ± 0.36 | 0.044 | −0.77 ± 0.23 | 0.001 | |
Model 6: Model 5 + parents’ education level | −0.78 ± 0.34 | 0.024 | −0.75 ± 0.21 | <0.001 | |
Model 7: Model 6 + MedDietScore (A) or KIDMED (B) | −0.77 ± 0.32 | 0.017 | −0.75 ± 0.21 | <0.001 |
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Foscolou, A.; Papandreou, P.; Bikaki, A.; Skouroliakou, M.; Gioxari, A. Adherence to the Mediterranean Diet and Arterial Blood Pressure in Schoolchildren: The Role of Parental Eating Habits. Children 2025, 12, 844. https://doi.org/10.3390/children12070844
Foscolou A, Papandreou P, Bikaki A, Skouroliakou M, Gioxari A. Adherence to the Mediterranean Diet and Arterial Blood Pressure in Schoolchildren: The Role of Parental Eating Habits. Children. 2025; 12(7):844. https://doi.org/10.3390/children12070844
Chicago/Turabian StyleFoscolou, Alexandra, Panos Papandreou, Aikaterini Bikaki, Maria Skouroliakou, and Aristea Gioxari. 2025. "Adherence to the Mediterranean Diet and Arterial Blood Pressure in Schoolchildren: The Role of Parental Eating Habits" Children 12, no. 7: 844. https://doi.org/10.3390/children12070844
APA StyleFoscolou, A., Papandreou, P., Bikaki, A., Skouroliakou, M., & Gioxari, A. (2025). Adherence to the Mediterranean Diet and Arterial Blood Pressure in Schoolchildren: The Role of Parental Eating Habits. Children, 12(7), 844. https://doi.org/10.3390/children12070844