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https://open.uns.ac.rs/handle/123456789/3209
Назив: | Does body fat percentage predict post-exercise heart rate response in non-obese children & adolescents? | Аутори: | Jezdimirović, Tatjana Štajer, Valdemar Semeredi, Saša Calleja-Gonzalez, Julio Ostojić, Sergej |
Кључне речи: | adolescents;autonomic regulation;body fat;children;heart rate;obesity | Датум издавања: | 2017 | Часопис: | Journal of Pediatric Endocrinology and Metabolism | Сажетак: | Background: A correlation between adiposity and postexercise autonomic regulation has been established in overweight and obese children. However, little information exists about this link in non-obese youth. The main purpose of this cross-sectional study was to describe the relationship between body fat percentage (BFP) and heart rate recovery after exercise [post-exercise heart rate (PEHR)], a marker of autonomic regulation, in normalweight children and adolescents. Methods: We evaluated the body composition of 183 children and adolescents (age 15.0 ± 2.3 years; 132 boys and 51 girls) who performed a maximal graded exercise test on a treadmill, with the heart rate monitored during and immediately after exercise. Results: A strong positive trend was observed in the association between BFP and PEHR (r =0.14; p =0.06). Hierarchical multiple regression revealed that our model explained 18.3% of the variance in PEHR (p =0.00), yet BFP accounted for only 0.9% of the variability in PEHR (p =0.16). The evaluation of the contribution of each independent variable revealed that only two variables made a unique statistically significant contribution to our model (p <0.01), with age contributing 38.7% to our model (p =0.00) while gender accounted for an additional 25.5% (p 0.01). Neither BFP (14.4%; p =0.16) nor cardiorespiratory endurance (5.0%, p =0.60) made a significant unique contribution to the model. Conclusions: Body fatness seems to poorly predict PEHR in our sample of non-obese children and adolescents, while non-modifiable variables (age and gender) were demonstrated as strong predictors of heart rate recovery. The low amount of body fat reported in non-obese young participants was perhaps too small to cause disturbances in autonomic nervous system regulation. | URI: | https://open.uns.ac.rs/handle/123456789/3209 | ISSN: | 0334-018X | DOI: | 10.1515/jpem-2016-0468 |
Налази се у колекцијама: | FSFV Publikacije/Publications |
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