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Table 1 Characteristics of the sample and comparisons according to sex based on the independent t-test

From: Association between handgrip strength and bone mineral density of Brazilian children and adolescents stratified by sex: a cross-sectional study

Variable

Boys (n = 171)

Mean (SD)

Girls (n = 72)

Mean (SD)

P-value

Age (years)

9.36 (2.30)

9.39 (1.97)

0.923

Weight (kg)

38.97 (14.28)

40.90 (14.33)

0.338

Height (cm)

140.63 (13.92)

141.42 (13.32)

0.684

PHV (years)

−4.52 (1.35)

− 4.29 (1.18)

0.210

APHV (years)

13.18 (1.35)

13.65 (0.92)

0.313

HGS (kg)

16.04 (6.17)

16.16 (6.35)

0.894

PLST (%)

71.51 (13.93)

67.04 (11.39)

0.039*

PFM (%)

23.21 (11.92)

30.28 (13.50)

< 0.001*

BMD Arms (g/cm2)

0.63 (0.06)

0.63 (0.06)

0.961

BMD Legs (g/cm2)

0.93 (0.15)

0.95 (0.13)

0.354

BMD Pelvis (g/cm2)

0.87 (0.13)

0.91 (0.16)

0.023*

BMD Trunk (g/cm2)

0.74 (0.08)

0.77 (0.10)

0.039*

BMD Spine (g/cm2)

0.78 (0.10)

0.85 (0.18)

0.002*

BMD Total (g/cm2)

0.92 (0.08)

0.94 (0.08)

0.248

  1. SD = standard deviation, PHV = years from peak height velocity, APHV = age of peak height velocity, HGS = handgrip strength, PLST = percentage lean soft tissue, PFM = percentage fat mass, BMD = bone mineral density, * = p-value < 0.05