Pelegrini Andreia, Bim Mateus Augusto, Alves Agnes Day, Scarabelot Karoline Sousa, Claumann Gaia Salvador, Fernandes Rômulo Araújo, de Angelo Hector Cris Colares, Pinto André de Araújo
Physical Education Department, Santa Catarina State University, Florianópolis, Santa Catarina, Brazil.
Physical Education Department, Santa Catarina State University, Florianópolis, Santa Catarina, Brazil.
J Clin Densitom. 2022 Jan-Mar;25(1):54-60. doi: 10.1016/j.jocd.2021.09.001. Epub 2021 Sep 24.
Adolescence is an important period for the acquisition of bone mass, which can be enhanced by several factors. This study aimed examine the relationships of handgrip strength, free-fat mass, and fat mass with bone mineral density in adolescents. 118 adolescents (60 girls), aged 10 to 14 years, participated in the study. Information on sex, age, handgrip strength, free-fat mass, fat mass and bone mineral density were collected. Multiple linear regression analyses were conducted to examine possible relationships between bone mineral density and handgrip strength, free-fat mass and fat mass. There was a relation between handgrip strength and free-fat mass with bone mineral density in both sexes. Fat mass was correlated with bone mineral density only in girls (r= 0.314, p< 0.014). The final models, adjusted for sexual maturation, included free-fat mass (girls - β= 0.419, p< 0.001; boys - β= 0.455; p< 0.001) and handgrip strength (girls - β= 0.358, p< 0.05; boys - β= 0.325; p< 0.05) and these variables together explained 51.8% and 62.9% of the variation of bone mineral density, in girls and boys, respectively. Handgrip strength and free-fat mass were positively associated with bone mineral density. A sex-specific difference indicated that higher levels of free-fat mass are of paramount importance for both sexes.
青春期是获取骨量的重要时期，有几个因素可以增强骨量。本研究旨在探讨青少年握力、去脂体重和脂肪量与骨密度之间的关系。118名年龄在10至14岁的青少年（60名女孩）参与了该研究。收集了有关性别、年龄、握力、去脂体重、脂肪量和骨密度的信息。进行了多元线性回归分析，以检验骨密度与握力、去脂体重和脂肪量之间的可能关系。握力和去脂体重与两性的骨密度均有关系。脂肪量仅在女孩中与骨密度相关（r = 0.314，p < 0.014）。经性成熟调整后的最终模型包括去脂体重（女孩 - β = 0.419，p < 0.001；男孩 - β = 0.455；p < 0.001）和握力（女孩 - β = 0.358，p < 0.05；男孩 - β = 0.325；p < 0.05），这些变量共同分别解释了女孩和男孩骨密度变化的51.8%和62.9%。握力和去脂体重与骨密度呈正相关。性别特异性差异表明，较高水平的去脂体重对两性都至关重要。
