The Experts below are selected from a list of 6 Experts worldwide ranked by ideXlab platform

Martha Mcmurry - One of the best experts on this subject based on the ideXlab platform.

  • effects of dairy products on bone and body composition in pubertal girls
    The Journal of Pediatrics, 1995
    Co-Authors: Gary M Chan, Karen Hoffman, Martha Mcmurry
    Abstract:

    Abstract Objective: To study the effect of calcium supplementation with dairy products on the bone and body composition of pubertal girls. Design: Randomized control study with 12-month follow-up. Setting: General community. Subjects: Forty-eight white girls whose mean age was 11 years and sexual development at Tanner stage 2. Intervention: One group's diet was supplemented with dairy products to the recommended dietary allowance of 1200 mg calcium daily. The other group ate their usual diet. Main outcome measures: Bone mineral content and density were measured at the radius, femoral neck, lumbar Spine, and total body bone mineral by single-photon and dual-energy x-ray absorptiometry at the start of the study and after 3, 6, 9, and 12 months. Body composition (lean body mass and body fat) was measured by dual-energy x-ray absorptiometry at the same intervals. Serum calcium, phosphate, 25-hydroxyvitamin D, 1,25-dihydroxyvitamin D, alkaline phosphatase, magnesium, and albumin concentrations were determined at the start and end of the study. The urinary calcium/creatinine ratio and hydroxyproline concentration were also determined. Results: The dairy group had higher intakes of calcium, phosphate, vitamin D, and protein than control subjects. The dairy group had significantly greater increases during the 1-year study in bone mineral density at the lumbar Spine Bones (22.8% ± 6.9% vs 12.9% ± 8.3%) and in total body bone mineral (14.2% ± 7.0% vs 7.6% ± 6.0%) than control subjects. Dietary calcium, phosphate, vitamin D, and protein intakes were associated with the lumbar bone density and total body bone calcium. There were no differences in serum or urinary biochemical values between the two groups at the start or end of the study. Conclusions: Young girls whose dietary calcium intake was provided primarily by dairy products at or above the recommended dietary allowances had an increased rate of bone mineralization. Increased intake of dairy foods did not increase overall total or saturated fat intake and was not associated with excessive weight gain or increased body fat. (J PEDIATR 1995;126:551-6)

Gary M Chan - One of the best experts on this subject based on the ideXlab platform.

  • effects of dairy products on bone and body composition in pubertal girls
    The Journal of Pediatrics, 1995
    Co-Authors: Gary M Chan, Karen Hoffman, Martha Mcmurry
    Abstract:

    Abstract Objective: To study the effect of calcium supplementation with dairy products on the bone and body composition of pubertal girls. Design: Randomized control study with 12-month follow-up. Setting: General community. Subjects: Forty-eight white girls whose mean age was 11 years and sexual development at Tanner stage 2. Intervention: One group's diet was supplemented with dairy products to the recommended dietary allowance of 1200 mg calcium daily. The other group ate their usual diet. Main outcome measures: Bone mineral content and density were measured at the radius, femoral neck, lumbar Spine, and total body bone mineral by single-photon and dual-energy x-ray absorptiometry at the start of the study and after 3, 6, 9, and 12 months. Body composition (lean body mass and body fat) was measured by dual-energy x-ray absorptiometry at the same intervals. Serum calcium, phosphate, 25-hydroxyvitamin D, 1,25-dihydroxyvitamin D, alkaline phosphatase, magnesium, and albumin concentrations were determined at the start and end of the study. The urinary calcium/creatinine ratio and hydroxyproline concentration were also determined. Results: The dairy group had higher intakes of calcium, phosphate, vitamin D, and protein than control subjects. The dairy group had significantly greater increases during the 1-year study in bone mineral density at the lumbar Spine Bones (22.8% ± 6.9% vs 12.9% ± 8.3%) and in total body bone mineral (14.2% ± 7.0% vs 7.6% ± 6.0%) than control subjects. Dietary calcium, phosphate, vitamin D, and protein intakes were associated with the lumbar bone density and total body bone calcium. There were no differences in serum or urinary biochemical values between the two groups at the start or end of the study. Conclusions: Young girls whose dietary calcium intake was provided primarily by dairy products at or above the recommended dietary allowances had an increased rate of bone mineralization. Increased intake of dairy foods did not increase overall total or saturated fat intake and was not associated with excessive weight gain or increased body fat. (J PEDIATR 1995;126:551-6)

Karen Hoffman - One of the best experts on this subject based on the ideXlab platform.

  • effects of dairy products on bone and body composition in pubertal girls
    The Journal of Pediatrics, 1995
    Co-Authors: Gary M Chan, Karen Hoffman, Martha Mcmurry
    Abstract:

    Abstract Objective: To study the effect of calcium supplementation with dairy products on the bone and body composition of pubertal girls. Design: Randomized control study with 12-month follow-up. Setting: General community. Subjects: Forty-eight white girls whose mean age was 11 years and sexual development at Tanner stage 2. Intervention: One group's diet was supplemented with dairy products to the recommended dietary allowance of 1200 mg calcium daily. The other group ate their usual diet. Main outcome measures: Bone mineral content and density were measured at the radius, femoral neck, lumbar Spine, and total body bone mineral by single-photon and dual-energy x-ray absorptiometry at the start of the study and after 3, 6, 9, and 12 months. Body composition (lean body mass and body fat) was measured by dual-energy x-ray absorptiometry at the same intervals. Serum calcium, phosphate, 25-hydroxyvitamin D, 1,25-dihydroxyvitamin D, alkaline phosphatase, magnesium, and albumin concentrations were determined at the start and end of the study. The urinary calcium/creatinine ratio and hydroxyproline concentration were also determined. Results: The dairy group had higher intakes of calcium, phosphate, vitamin D, and protein than control subjects. The dairy group had significantly greater increases during the 1-year study in bone mineral density at the lumbar Spine Bones (22.8% ± 6.9% vs 12.9% ± 8.3%) and in total body bone mineral (14.2% ± 7.0% vs 7.6% ± 6.0%) than control subjects. Dietary calcium, phosphate, vitamin D, and protein intakes were associated with the lumbar bone density and total body bone calcium. There were no differences in serum or urinary biochemical values between the two groups at the start or end of the study. Conclusions: Young girls whose dietary calcium intake was provided primarily by dairy products at or above the recommended dietary allowances had an increased rate of bone mineralization. Increased intake of dairy foods did not increase overall total or saturated fat intake and was not associated with excessive weight gain or increased body fat. (J PEDIATR 1995;126:551-6)

Martín M. - One of the best experts on this subject based on the ideXlab platform.

  • Modeling human tissues : an efficient integrated methodology
    2020
    Co-Authors: Gavidia Giovana, Soudah Eduardo, Cerrolaza Miguel, Martín M.
    Abstract:

    Geometric models of human body organs are obtained from imaging techniques like computed tomography (CT) and magnetic resonance image (MRI) that oallow an accurate visualization of the inner body, thus providing relevant information about their its structure and pathologies. Next, these models are used to generate surface and volumetric meshes, which can be used further for visualization, measurement, biomechanical simulation, rapid prototyping and prosthesis design. However, going from geometric models to numerical models is not an easy task, being necessary to apply image-processing techniques to solve the complexity of human tissues and to get more simplified geometric models, thus reducing the complexity of the subsequent numerical analysis. In this work, an integrated and efficient methodology to obtain models of soft tissues like gray and white matter of brain and hard tissues like jaw and Spine Bones is proposed. The methodology is based on image-processing algorithms chosen according to some characteristics of the tissue: type, intensity profiles and boundaries quality. First, low-quality images are improved by using enhancement algorithms to reduce image noise and to increase structures contrast. Then, hybrid segmentation for tissue identification is applied through a multi-stage approach. Finally, the obtained models are resampled and exported in formats readable by computer aided design (CAD) tools. In CAD environments, this data is used to generate discrete models using finite element methed (FEM) or other numerical methods like the boundary element method (BEM). Results have shown that the proposed methodology is useful and versatile to obtain accurate geometric models that can be used in several clinical cases to obtain relevant quantitative and qualitative information

Gavidia Giovana - One of the best experts on this subject based on the ideXlab platform.

  • Modeling human tissues : an efficient integrated methodology
    2020
    Co-Authors: Gavidia Giovana, Soudah Eduardo, Cerrolaza Miguel, Martín M.
    Abstract:

    Geometric models of human body organs are obtained from imaging techniques like computed tomography (CT) and magnetic resonance image (MRI) that oallow an accurate visualization of the inner body, thus providing relevant information about their its structure and pathologies. Next, these models are used to generate surface and volumetric meshes, which can be used further for visualization, measurement, biomechanical simulation, rapid prototyping and prosthesis design. However, going from geometric models to numerical models is not an easy task, being necessary to apply image-processing techniques to solve the complexity of human tissues and to get more simplified geometric models, thus reducing the complexity of the subsequent numerical analysis. In this work, an integrated and efficient methodology to obtain models of soft tissues like gray and white matter of brain and hard tissues like jaw and Spine Bones is proposed. The methodology is based on image-processing algorithms chosen according to some characteristics of the tissue: type, intensity profiles and boundaries quality. First, low-quality images are improved by using enhancement algorithms to reduce image noise and to increase structures contrast. Then, hybrid segmentation for tissue identification is applied through a multi-stage approach. Finally, the obtained models are resampled and exported in formats readable by computer aided design (CAD) tools. In CAD environments, this data is used to generate discrete models using finite element methed (FEM) or other numerical methods like the boundary element method (BEM). Results have shown that the proposed methodology is useful and versatile to obtain accurate geometric models that can be used in several clinical cases to obtain relevant quantitative and qualitative information