Do School Athletes Really Eat Better? Nutritional and Body Composition Differences in Saudi Adolescents.

Background

Obesity among Saudi adolescents has risen sharply, yet whether school athletic participation is associated with students showing improved dietary habits and better anthropometric profiles compared to those of their non-athlete peers remains unclear. This study compared anthropometric indices and dietary habits between school athletes and non-athletes in Riyadh.

Methods

A cross-sectional study was conducted with 124 male secondary school students (70 athletes and 54 non-athletes aged 16-17 years) in Riyadh, Saudi Arabia. Athletes were defined as students who reported engaging in vigorous-intensity sport for ≥3 days/week for ≥60 min/session. BMI, body weight, and waist circumference were measured objectively. Dietary habit frequencies across ten food categories were assessed using the validated Arab Teens Lifestyle Study (ATLS) questionnaire. Independent samples t-tests and chi-square tests were used; effect sizes were calculated as Cohen's d. A Bonferroni-corrected threshold (p < 0.005) was applied for multiple dietary comparisons.

Results

Athletes had significantly lower BMI (23.64 ± 5.39 vs. 30.28 ± 7.25 kg/m2; p < 0.001, d = 1.06), body weight (p < 0.001, d = 0.93), and waist circumference (85.46 ± 12.61 vs. 95.50 ± 17.89 cm; p < 0.001, d = 0.66). Obesity prevalence was 15.7% among athletes versus 51.9% among non-athletes. Of ten dietary variables, only fresh fruit consumption showed a between-group difference (62.9% vs. 40.7% high-frequency; p = 0.010), which did not survive Bonferroni correction.

Conclusions

School athletes demonstrated substantially better anthropometric profiles than their non-athlete peers, but dietary habit frequencies were largely similar across both groups. The high obesity prevalence among non-athletes underscores the need for school-based programs that combine structured physical activity with targeted nutrition education.