• Bruna Thamyres Ciccotti Saraiva, Ricardo Ribeiro Agostinete, Ismael Forte Freitas Júnior, Daniel Eduardo Rodrigues de Sousa, Luis Alberto Gobbo, William Rodrigues Tebar, and Diego Giulliano Destro Christofaro.
• Department of Physical Education, São Paulo State University (UNESP), School of Sciences and Technology, Presidente Prudente, SP, CEP 19060-900, Brazil.
• Bmc Pediatr. 2021 Apr 28; 21 (1): 207.

BackgroundTo examine the association of handgrip strength (HGS) and bone mineral density (BMD) of Brazilian children and adolescents.MethodsThe sample included 243 children and adolescents aged from 4 to 15 years (9.3 ± 2.2 years), 171 males and 72 females. The following measurements were performed: weight, height, trunk length, and years to the peak height velocity (PHV). The percentage lean soft tissue (PLST), percentage fat mass (PFM), and BMD were obtained using Dual Energy X-ray Absorptiometry (DXA) and HGS using a dynamometer.ResultsIn girls, HGS was positively associated with higher BMD, even after the adjustments, by arms [β = 0.006; p < 0.001], legs [β = 0.014; p < 0.001], pelvis [β = 0.019; p < 0.001], trunk [β = 0.013; p < 0.001], spine [β = 0.013; p = 0.008], and total body [β = 0.009; p < 0.001]. The same occurred in the boys, even after the adjustments a positive relationship was observed, whereas higher HGS was related to greater BMD in arms [β = 0.006; p < 0.001], legs [β = 0.017; p < 0.001], pelvis [β = 0.014; p < 0.001], trunk [β = 0.009; p < 0.001], spine [β = 0.008; p < 0.001], and total body [β = 0.007; p < 0.001].ConclusionHGS was positively associated to BMD in boys and girls, regardless of age, PHV, PLST, and PFM.

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