scholarly journals Sex-specific association of physical activity with bone mass distribution at the femoral neck and trochanter in young adults

2013 ◽  
Author(s):  
Vera Zymbal ◽  
Lurdes Rebocho ◽  
Graca Cardadeiro ◽  
Fatima Baptista
Keyword(s):  
Physical Activity ◽  
Young Adults ◽  
Femoral Neck ◽  
Bone Mass ◽  
Mass Distribution ◽  
Specific Association

scholarly journals A randomized double-blind controlled calcium supplementation trial, and bone height acquisition in children

1995 ◽  
Vol 74 (1) ◽  
pp. 125-139 ◽  
Author(s):  
Warren T. K. Lee ◽  
Sophie S. F. Leung ◽  
Doram. Y. Leung ◽  
Heidi S. Y. Tsang ◽  
Joseph Lau ◽  
...  
Keyword(s):  
Physical Activity ◽  
Femoral Neck ◽  
Bone Mass ◽  
Bone Mineral ◽  
Chinese Children ◽  
Study Group ◽  
Double Blind ◽  
Baseline Serum ◽  
Lumbar Spinal ◽  
25 Hydroxycholecalciferol

There is limited information relating Ca intake to bone and height acquisition among Oriental children who consume little or even no milk. The present controlled study investigated the acquisition of bone mass and height of Chinese children with an initial Ca intake of approximately 567 mg/d who were supplemented to about 800 mg/d. Eighty-four 7-year-old Hong Kong Chinese children underwent an 18-month randomized, double-blind, controlled Ca-supplementation trial. The children were randomized to receive either 300 mg elemental Ca or a placebo tablet daily. Bone mass of the distal one-third radius was measured by single-photon absorptiometry, lumbar spine and femoral neck were determined using dual-energy X-ray absorptiometry. Measurements were repeated 6-monthly. Baseline serum 25-hydroxycholecalciferol concentration and physical activity were also assessed. Baseline Ca intakes of the study group and controls were respectively 571 (SD 326) and 563 (SD 337) mg/d. There were no significant differences in baseline serum 25-hydroxycholecalciferol concentration (P= 0·71) and physical activity (P= 0·36) between the study and control groups. After 18 months the study group had significantly greater increases in lumbar-spinal bone mineral content (20·9v. 16. 34%;P= 0·035), lumbar-spinal area (11·16v. 8·71%;P= 0middot;049), and a moderately greater increment in areal bone mineral density of the radius (7·74 0·600%;P= 0.081) when compared with the controls. The results confirm a positive effect of Ca on bone mass of the spine and radius but no effects on femoral-neck and height increase. A longer trial is warranted to confirm a positive Ca effect during childhood that may modify future peak bone mass.

Physical Activity, Bone Geometry, and Bone Mass at the Proximal Femur Regions in Young Adults

2014 ◽  
Vol 46 ◽  
pp. 38 ◽  
Author(s):  
Vera Zymbal ◽  
Lurdes Rebocho ◽  
Graça Cardadeiro ◽  
Fátima Baptista
Keyword(s):  
Physical Activity ◽  
Young Adults ◽  
Bone Mass ◽  
Proximal Femur ◽  
Bone Geometry

scholarly journals Influence of a School-based Physical Activity Intervention on Cortical Bone Mass Distribution: A 7-year Intervention Study

2016 ◽  
Vol 99 (5) ◽  
pp. 443-453 ◽  
Author(s):  
Jesper Fritz ◽  
Rachel L. Duckham ◽  
Timo Rantalainen ◽  
Björn E. Rosengren ◽  
Magnus K. Karlsson ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Cortical Bone ◽  
Mass Distribution ◽  
Intervention Study ◽  
Physical Activity Intervention ◽  
School Based ◽  
Cortical Bone Mass

Comparative high-resolution pQCT analysis of femoral neck indicates different bone mass distribution in osteoporosis and osteoarthritis

2011 ◽  
Vol 23 (7) ◽  
pp. 1967-1975 ◽  
Author(s):  
A. Rubinacci ◽  
D. Tresoldi ◽  
E. Scalco ◽  
I. Villa ◽  
F. Adorni ◽  
...  
Keyword(s):  
High Resolution ◽  
Femoral Neck ◽  
Bone Mass ◽  
Mass Distribution

The Effects of Body Composition, Dietary Intake, and Physical Activity on Calcaneus Quantitative Ultrasound in Spanish Young Adults

2016 ◽  
Vol 18 (4) ◽  
pp. 439-444 ◽  
Author(s):  
María Correa-Rodríguez ◽  
Jacqueline Schmidt Rio-Valle ◽  
Emilio González-Jiménez ◽  
Blanca Rueda-Medina
Keyword(s):  
Physical Activity ◽  
Young Adults ◽  
Body Composition ◽  
Bone Mass ◽  
Dietary Intake ◽  
Lean Mass ◽  
Quantitative Ultrasound ◽  
Early Adulthood ◽  
Broadband Ultrasound Attenuation ◽  
Modifiable Factors

Identifying modifiable factors that influence bone gain during early adulthood in order to maximize peak bone mass (PBM) is a potential primary strategy in the prevention of osteoporosis in later life. The present study examined the relationships between body composition, dietary intake and physical activity (PA), and bone health measured by quantitative ultrasound (QUS) at the right calcaneus. The study population consisted of 781 Spanish men and women (age 19.1 ± 3.6). Body composition, dietary intake, PA, and bone strength were assessed. Calcaneus QUS was significantly correlated with age, height, weight, body mass index, lean mass, fat mass, protein intake, and moderate and high PA. No significant correlation between calcium intake and broadband ultrasound attenuation (BUA, dB/MHz) was detected. Linear regression analyses revealed that independent variables accounted for 18.8% of the total variance of calcaneus BUA ( p = .000). Lean mass and high PA were significant predictors of BUA variance in young adults ( p = .000 and p = .045, respectively). Results indicate that lifestyle choices and their consequences during early adulthood could influence bone mass, particularly PA and lean mass. Furthermore, this study provides novel data about bone mass as indicated by the QUS measurements at the time of PBM acquisition.

Interactive effects of habitual physical activity and calcium intake on bone density in boys and girls

2004 ◽  
Vol 97 (4) ◽  
pp. 1203-1208 ◽  
Author(s):  
Ann V. Rowlands ◽  
David K. Ingledew ◽  
Sarah M. Powell ◽  
Roger G. Eston
Keyword(s):  
Physical Activity ◽  
Femoral Neck ◽  
Bone Mass ◽  
Bone Mineral ◽  
Proximal Femur ◽  
Calcium Intake ◽  
Habitual Physical Activity ◽  
Interactive Effects ◽  
Vigorous Activity ◽  
Total Body

The purpose of this study was to assess the interactive effects of habitual physical activity (total and vigorous intensity) and calcium intake on bone mineral content (BMC) in prepubertal boys and girls. Seventy-six children, aged 8–11 yr, wore accelerometers for up to 7 days to assess activity. Calcium intake was estimated by a 4-day weighted food diary. BMC and areal density (bone mineral density) were measured at the total body, proximal femur, and femoral neck by using dual-energy X-ray absorptiometry. Moderated regression analyses were used to assess the contributions of physical activity (total and vigorous) and calcium intake to BMC, residualized for bone area and body mass. Interactive effects of vigorous activity (≥6 metabolic equivalents) and calcium intake were found at the total body in boys ( b = 2.90 × 10−3) and in girls ( b = 6.58 × 10−3) and at the proximal femur ( b = 9.87 × 10−5) and femoral neck ( b = 2.29 × 10−5; where b is the regression coefficient from final equation) in boys only; residualized BMC was high only if both vigorous activity and calcium intake were high. There were no interactive effects of total activity and calcium intake. This study provides evidence for synergistic action of habitual vigorous activity and calcium intake on bone mass in children. Recommendations for optimizing bone mass should reflect this synergism.

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