Relations of endogenous anabolic hormones and physical activity to bone mineral density and lean body mass in elderly men

1994 ◽  
Vol 40 (5) ◽  
pp. 653-661 ◽  
Author(s):  
Daniel Rudman ◽  
Paul J. Drinka ◽  
Charles R. Wilsont ◽  
Dale E. Mattson ◽  
Francis Scherman ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Mineral Density ◽  
Elderly Men ◽  
Anabolic Hormones

scholarly journals High Levels of Physical Activity May Promote a Reduction in Bone Mineral Density in Peritoneal Dialysis

Medicina ◽  
2020 ◽  
Vol 56 (9) ◽  
pp. 464
Author(s):  
Armando Raimundo ◽  
Zelinda Charrua ◽  
Nuno Batalha ◽  
Catarina Pereira ◽  
Jose Parraca ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Body Composition ◽  
Peritoneal Dialysis ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Biochemical Parameters ◽  
Vigorous Activity ◽  
Mineral Density

Background and objectives: Peritoneal dialysis (PD) patients are expected to present lower levels of physical activity, unhealthy changes at the body composition level, and low levels of strength. Firstly, this study aimed to report the sex differences in physical activity, body composition and muscle strength and the relations among these variables. Secondly, we analyze the relationship between physical activity and biochemical parameters. Materials and Methods: Thirty-four patients (13 women and 21 men) participated in this study. Body composition was assessed by bioimpedance and dual-energy X-ray absorptiometry (DXA), and maximum isokinetic unilateral strength, analytical parameters and physical activity levels were evaluated. Results: The men showed higher values for weight, height, lean body mass, bone mineral content, bone mineral density (BMD) and total body water, while women showed higher values for the percentage of fat mass and hydration of lean body mass (p < 0.05). No differences between the sexes were found in different levels of physical activity; however, males registered significantly higher values for isokinetic strength variables except for knee extensor strength. BMD was positively related to sedentary activity and negatively related to moderate and vigorous activity (r = 0.383 and r = −0.404, respectively). Light physical activity was negatively correlated with albumin (r = −0.393) and total protein (r = −0.410) levels, while moderate/vigorous activity was positively correlated with urea distribution volume (r = 0.446) and creatinine clearance (r = 0.359) and negatively correlated with the triglyceride level (r = −0.455). Conclusions: PD patients with higher levels of physical activity present better results in terms of body composition and biochemical parameters. Additional studies should be conducted to clarify the relation between physical activity level and BMD.

Phytase supplementation increases bone mineral density, lean body mass and voluntary physical activity in rats fed a low-zinc diet☆

2010 ◽  
Vol 21 (7) ◽  
pp. 653-658 ◽  
Author(s):  
Angus G. Scrimgeour ◽  
Louis J. Marchitelli ◽  
Jered S. Whicker ◽  
Yang Song ◽  
Emily Ho ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Mineral Density ◽  
Voluntary Physical Activity

Effect of Calcium Intake, Tennis Playing, and Body Composition on Bone-Mineral Density of Brazilian Male Adolescents

2008 ◽  
Vol 18 (5) ◽  
pp. 524-538 ◽  
Author(s):  
Claudia Ridel Juzwiak ◽  
Olga Maria Silverio Amancio ◽  
Maria Sylvia Souza Vitalle ◽  
Vera Lúcia Szejnfeld ◽  
Marcelo Medeiros Pinheiro
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Body Composition ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Calcium Intake ◽  
Mineral Density ◽  
Tennis Players ◽  
Dietary Nutrient

In this prospective, cross-sectional study male adolescent tennis players (44) and nonathletic controls (32) were evaluated to determine the effects of physical activity, dietary nutrient intakes, sexual maturation, and body composition on bone-mineral density (BMD). Dietary nutrient intakes and physical activity expenditure were estimated by 4-d diaries. Total body composition, bone-mineral content (BMC), and BMD (L1–L4, femur, and nondominant forearm) were assessed by dual-energy X-ray absorptiometry. Tennis players had significantly greater lean body mass (mean [SEM] 50.6 [1.6] kg vs. 45.1 [1.7] kg, p = .022), trochanter BMD (1.0 [0.02] g/cm2 vs. 0.9 [0.03] g/cm2, p = .032), and dominant forearm BMC (173.7 [7.4] g vs. 146.5 [9.3] g) but lower BMD in the nondominant forearm (0.7 [0.02] g/cm2 vs. 0.8 [0.03] g/cm2, p = .028). Daily average calcium intake was below the recommendation in both groups. No correlation was found between BMD and calcium intake and exercise. Lean body mass was the best predictor of BMD and BMC for both tennis players and controls (R2 = .825, .628, and .693 for L1–L4, total femur, and nondominant forearm, respectively). Based on these results the authors conclude that lean body mass is the best predictor of BMD and BMC for both tennis players and others. Tennis exerts a site-specific effect, and training should focus on ways minimize this effect. Although calcium intake showed no effect on BMD, nutrition education for young athletes should focus on promoting a balanced diet, providing energy and nutrients in adequate amounts.

scholarly journals Hubungan tingkat kecukupan zat gizi, lean body mass, dan aktivitas fisik dengan kepadatan tulang pada mahasiswa Universitas Udayana Denpasar

2016 ◽  
Vol 4 (2) ◽  
pp. 96-101
Author(s):  
Ni Putu Puspita Adhytiarini Dewi ◽  
Hardhono Susanto ◽  
Ali Rosidi
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Vitamin D ◽  
Vitamin A ◽  
Vitamin C ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Research Subjects ◽  
Mineral Density

Background: Bone formation and peak bone mass determine with bone density in adulthood related with osteopenia or osteoporosis. It could be influenced by nutrition intakes, lean body mass, and physical activity.Objective: to analyze the correlation between nutritional adequacy, lean body mass, physical activity and bone mineral density in Udayana University Economic’s students, Denpasar. Methods: Cross-sectional study design was done to female students of Faculty of Economic and Business, Udayana University, Denpasar. Seventy five subjects were choosen by simple random sampling. Results: Research subjects were aged 20-25 years old. The mean t-score of bone mineral density is -0,363 ± 1,057. Research subjects were classified as low bone density (osteopenia) 26,7% and 73,3% are normal. Intakes of animal protein (p = 0,042) and lean body mass (p = 0,011) are related with bone mineral density protein (p = 0,955) but not on intakes of vitamin A (p = 0,249), vitamin C (p = 0,632), vitamin D (p = 0,864), calcium (p = 0,724), iron (p = 0,768), magnesium (p = 0,689), phosphorus (p = 0,716), and physical activity (p = 0,254). There were a positive trend on the level of protein, vitamin A, vitamin C, vitamin D, calcium, iron, magnesium and phosphorus sufficiency.Conclusions: Intakes of Animal protein, lean body mass and physical activity related with bone mineral density but not on protein, vitamin A, vitamin C, vitamin D, calcium, iron, magnesium, and phosphorus intake.

scholarly journals Lean Body Mass in the Prediction of Bone Mineral Density in Postmenopausal Women

2018 ◽  
Vol 7 (1) ◽  
pp. 150-158 ◽  
Author(s):  
Bolaji Lilian Ilesanmi-Oyelere ◽  
Jane Coad ◽  
Nicole Roy ◽  
Marlena Cathorina Kruger
Keyword(s):  
Bone Mineral Density ◽  
Postmenopausal Women ◽  
Lean Body Mass ◽  
Body Mass ◽  
Bone Mineral ◽  
Mineral Density
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