Cardiovascular adaptations after 10 months of intense school-based physical training for 8- to 10-year-old children

TY - JOUR

T1 - Cardiovascular adaptations after 10 months of intense school-based physical training for 8- to 10-year-old children

AU - Larsen, Malte Nejst

AU - Nielsen, Claus Malta

AU - Madsen, Mads

AU - Manniche, Vibeke

AU - Hansen, Lone

AU - Bangsbo, Jens

AU - Krustrup, Peter

AU - Hansen, Peter Riis

N1 - CURIS 2018 NEXS 252

PY - 2018/8

Y1 - 2018/8

N2 - 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.

AB - 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.

KW - Faculty of Science

KW - Ball games

KW - Blood pressure

KW - Cardiac function

KW - Cardiac structure

KW - Echocardiography

KW - Football

U2 - 10.1111/sms.13253

DO - 10.1111/sms.13253

M3 - Journal article

C2 - 30047176

SN - 0905-7188

VL - 28

SP - 33

EP - 41

JO - Scandinavian Journal of Medicine & Science in Sports

JF - Scandinavian Journal of Medicine & Science in Sports

IS - Suppl. 1

ER -