Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, and CIC 1403 - Clinical Investigation Center, F-59000, Lille, France.
Univ. Lille, CHU Lille, ULR 2694 - METRICS: Évaluation des Technologies de Santé et des Pratiques Médicales et Départment de Biostatistiques, F-59000, Lille, France.
Eur J Clin Nutr. 2022 Jun;76(6):871-878. doi: 10.1038/s41430-021-01038-6. Epub 2021 Nov 12.
BACKGROUND/OBJECTIVES: The study purpose was to assess the impact of birth weight and breastfeeding duration on physical fitness components.
SUBJECTS/METHODS: Study participants were 985 adolescents boys and 1246 girls (12.5-17.5 years) participating in the HELENA study. Standardised physical fitness procedures included: cardio-respiratory fitness, flexibility, upper body muscular strength, and lower body explosive strength. Birth weight and breastfeeding duration were assessed by parents' questionnaire. Associations between neonatal data and physical fitness were investigated using linear mixed models.
Significant associations between body muscular strength, and breastfeeding duration were observed in the unadjusted analyses for boys. When adjusting for potential confounding factors (z-score body mass index, fat-free mass, fat mass), only lower body muscular strength, by standing broad jump-a proxy measure of muscular explosivity- was positively associated with breastfeeding duration. Furthermore, significant associations were observed between upper body muscular strength (by hand grip),-a proxy measure of muscular power-in boys as well as in girls.
Birth weight and breastfeeding duration have different effects on muscular strength components. The present results suggest that birth weight positively influences the development of muscular power, while breastfeeding duration positively influences muscular explosivity.
背景/目的：本研究旨在评估出生体重和母乳喂养持续时间对身体素质成分的影响。
受试者/方法：研究参与者为 985 名男青少年和 1246 名女青少年（12.5-17.5 岁），他们参加了 HELENA 研究。标准化的身体素质程序包括：心肺适能、柔韧性、上肢肌肉力量和下肢爆发力。出生体重和母乳喂养持续时间由家长问卷评估。使用线性混合模型研究新生儿数据与身体素质之间的关联。
在未调整的男孩分析中，身体肌肉力量与母乳喂养持续时间之间存在显著关联。当调整潜在混杂因素（z 分数体重指数、去脂体重、体脂）后，仅下肢肌肉力量（通过站立跳远——肌肉爆发力的替代指标）与母乳喂养持续时间呈正相关。此外，在男孩和女孩中，上肢肌肉力量（通过握力）——肌肉力量的替代指标——也存在显著关联。
出生体重和母乳喂养持续时间对肌肉力量成分有不同的影响。本研究结果表明，出生体重对肌肉力量的发展有积极影响，而母乳喂养持续时间对肌肉爆发力有积极影响。
