Effects of Two Different Low-Volume Resistance Training Programs Applied During the Off-Season Period on the Speed-Power Performance of Elite Youth Soccer Players.

Loturco, I, Nunes, RFH, Lampert, RR, Silva, RLP, Hespanhol, JE, Novack, LF, Conde, JHS, Pereira, LA, and McGuigan, MR. Effects of two different low-volume resistance training programs applied during the off-season period on the speed-power performance of elite youth soccer players. .

Positive association of lean mass and negative association of protein intake on bone mass and bone geometry of adolescent soccer players.

Objective: The aim of this study was to evaluate the association of food consumption and body composition on bone parameters in adolescent soccer players.

Methods: There were 148 male soccer players 12 to 18 y who participated in the study. Body composition was assessed by dual energy x-ray absorptiometry, comprising bone mineral density (BMD) and bone mineral content (BMC) of total body without head (TBLH), lumbar spine (L1-L4), and right femoral neck (RFN).

Linear and nonlinear relationships between body mass index and physical fitness in Brazilian children and adolescents.

Objectives: The purpose of this study was to evaluate the linear and curvilinear relationship between body mass index (BMI) and physical fitness in children and adolescents.

Methods: Participants were 4567 (2505 girls) children aged 6-16 years. Weight and height were measured and BMI was calculated and adjusted for age and sex using WHO z-scores.

Waist Circumferences of Chilean Students: Comparison of the CDC-2012 Standard and Proposed Percentile Curves.

The measurement of waist circumference (WC) is considered to be an important means to control overweight and obesity in children and adolescents. The objectives of the study were to (a) compare the WC measurements of Chilean students with the international CDC-2012 standard and other international standards, and (b) propose a specific measurement value for the WC of Chilean students based on age and sex. A total of 3892 students (6 to 18 years old) were assessed.

Referencial values for the physical growth of school children and adolescents in Campinas, Brazil.

Aims: To compare the values of weight, height and IMC with the regional curve (Cariri); to compare with the international references of the CDC-2000; and to construct references that will measure physical growth from childhood to adolescence.

Subjects And Methods: The sample consists of 6531 individuals with an age range of 6.0-17.