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Belkadi Adel https://orcid.org/0000-0002-8715-2036
Houcine Asli https://orcid.org/0000-0003-1733-1829
Lalia Cherara https://orcid.org/0000-0002-5375-1911
Saddek Benhammou https://orcid.org/0000-0002-2726-5493
Mokrani Djemal https://orcid.org/0000-0001-5911-7930
Mohammed Sebbane https://orcid.org/0000-0003-3448-5299

Abstract

Objective: This study aimed to Explore the relationship between cardiac autonomic modulation (CAM) and resting heart rate (HRR) in children and adolescents, focusing on how physical activity levels influence autonomic regulation and cardiovascular health.


Methods: A total of 134 children and adolescents participated in this study. CAM and HRR were assessed using Polar heart rate monitors, and physical activity levels were evaluated using the Rider questionnaire. The relationship between CAM and HRR, stratified by physical activity levels, was analysed using linear regression adjusted for sex, age, and somatic maturation.


Results: Insufficiently active individuals exhibited a significant inverse relationship between high HRR and lower HRV indices, including RMSSD (β = -0.125), SDNN (β = -0.142), SD1 (β = -0.176), and SD2 (β = -0.114). In contrast, physically active individuals showed a weaker relationship, with only the SD1/SD2 index (β = -0.006) significantly associated with HRR. These findings suggest that regular physical activity preserves autonomic balance and reduces cardiovascular risk.


Conclusions: High resting heart rate is associated with reduced cardiac autonomic modulation in insufficiently active children and adolescents, while physical activity mitigates this relationship. These results underscore the importance of promoting physical activity in youth to enhance autonomic regulation and prevent future cardiovascular diseases. Future research should explore longitudinal and mechanistic insights to further elucidate these relationships.

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Keywords

Cardiac, autonomic, Heart rate, Physical activity, Youth

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Adel, B., Asli, H., Cherara, L., Benhammou, S., Djemal, M., & Sebbane, M. (2025). INVESTIGATING THE RELATIONSHIP BETWEEN CARDIAC AUTONOMIC MODULATION AND RESTING HEART RATE IN YOUTH ACROSS PHYSICAL ACTIVITY LEVELS. Physical Education and Sport Through The Centuries, 12(1), 17–31. Retrieved from https://phedss.fsfv-pr.rs/index.php/phedss/article/view/26
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