Abstract
This study examined cardiovascular adaptations in 8- to 10-year-old schoolchildren after 10 months (a full school year) of 3 × 40 minute per week of small-sided ball games (SSG, including football, basketball, and/or floorball) or circuit strength training (CST). The study involved 291 Danish schoolchildren, 8-10 years old, cluster-randomized to SSG (n = 93, 4 schools, 5 classes), CST (n = 83, 4 schools, 4 classes), or a control group (CON, n = 115, 2 schools, 5 classes). Before and after the 10-month intervention, resting heart rate and blood pressure measurements were performed as well as comprehensive transthoracic echocardiography and peripheral arterial tonometry (PAT). Analysis of baseline-to-10-months changes showed between-group differences (P < 0.05) after both training interventions in diastolic blood pressure (delta scores: SSG −2.1 ± 6.0 mm Hg; CST −3.0 ± 7.1 mm Hg; CON 0.2 ± 5.3 mm Hg). Moreover, there were between-group differences in delta scores (P < 0.05) in interventricular septum thickness (SSG 0.17 ± 0.87 mm; CST 0.30 ± 0.94 mm; CON −0.15 ± 0.68 mm), left-atrial volume index (SSG 0.32 ± 5.13 mL/m2; CON 2.60 ± 5.94 mL/m2), and tricuspid annular plane systolic excursion (SSG −0.4 ± 3.3 mm; CON: 0.1 ± 3.6 mm). No significant between-group differences were observed for the PAT-derived reactive hyperemia index. In conclusion, 10 months of 3 × 40 minutes per week of SSG and CST in 8- to 10-year-old children decreased diastolic blood pressure and elicited discrete cardiac adaptations, suggesting that intense physical exercise in school classes can have effects on cardiovascular health in children.
Original language | English |
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Journal | Scandinavian Journal of Medicine & Science in Sports |
Volume | 28 |
Issue number | Suppl. 1 |
Pages (from-to) | 33-41 |
Number of pages | 9 |
ISSN | 0905-7188 |
DOIs | |
Publication status | Published - Aug 2018 |
Keywords
- Faculty of Science
- Ball games
- Blood pressure
- Cardiac function
- Cardiac structure
- Echocardiography
- Football