Increasing Weight-Bearing Physical Activity and Calcium Intake for Bone Mass Growth in Children and Adolescents: A Review of Intervention Trials

2000 ◽  
Vol 31 (6) ◽  
pp. 722-731 ◽  
Author(s):  
Simone A. French ◽  
Jayne A. Fulkerson ◽  
Mary Story
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Children And Adolescents ◽  
Calcium Intake ◽  
Weight Bearing ◽  
Mass Growth ◽  
Intervention Trials

scholarly journals Calcium, physical activity and bone health – building bones for a stronger future

2001 ◽  
Vol 4 (1a) ◽  
pp. 117-123 ◽  
Author(s):  
Francesco Branca ◽  
Silvia Vatueña
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Calcium Intake ◽  
Weight Bearing ◽  
Bone Matrix ◽  
The United States ◽  
Dietary Adequacy ◽  
Enzymatic Systems ◽  
Bone Mass Measurements ◽  
Adequate Provision

AbstractAdequate provision of nutrients composing the bone matrix and regulating bone metabolism should be provided from birth in order to achieve maximal bone mass, compatible with individual genetic background, and to prevent osteoporosis later in life. Low calcium intake (<250 mg day−1) in children is associated with both a reduced bone mineral content and hyperparathyroidism. Optimal calcium intake is, however, still a matter of controversy. The minimisation of fracture risk would be the ideal functional outcome on which to evaluate lifetime calcium intakes, but proxy indicators, such as bone mass measurements or maximal calcium retention, are used instead. Calcium recommendations in Europe and the United States are based on different concepts as to requirements, leading to somewhat different interpretations of dietary adequacy. Minerals and trace elements other than calcium are involved in skeletal growth, some of them as matrix constituents, such as magnesium and fluoride, others as components of enzymatic systems involved in matrix turnover, such as zinc, copper and manganese. Vitamins also play a role in calcium metabolism (e.g. vitamin D) or as co-factors of key enzymes for skeletal metabolism (e.g. vitamins C and K). Physical activity has different effects on bone depending on its intensity, frequency, duration and the age at which it is started. The anabolic effect on bone is greater in adolescence and as a result of weight-bearing exercise. Adequate intakes of calcium appear necessary for exercise to have its bone stimulating action.

scholarly journals EXERCISE AND PEAK BONE MASS: RECOMMENDATION FOR BUILDING HEALTHY BONES IN CHILDREN

2016 ◽  
Vol 1 (2) ◽  
pp. 137
Author(s):  
A Andi Kurniawan
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Bone Health ◽  
Weight Status ◽  
Bone Development ◽  
Weight Bearing ◽  
Well Being ◽  
Vital Role ◽  
High Impact ◽  
Childhood And Adolescence

Regular Physical activity (PA) and exercise plays a vital role in the health and well-being of people of all ages, and its associated with positive outcomes relating to weight status, cardiometabolic markers, chronic disease prevention, bone health and mental health. Genetic factors are the strongest determinants of bone mass, but PA and exercise with loading of the bone also has a major impact on bone mass as well as on bone strength. Physical activity has been proposed as a key factor for developing healthy bones in childhood and adolescence, mainly when high-impact and weight-bearing exercise above a certain intensity and duration. It has been associated with bone accretion showing an important osteogenic effect, mainly when high-impact and weight bearing physical activity occur. Muscle mass is also a determinant of bone development. Several studies have examined the association between PA and bone health among youths.

Body Composition and Its Relationship to Growth and Bone Mass in Patients with Thalassemia

Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 3890-3890
Author(s):  
Ellen Fung ◽  
Yan Xu ◽  
Janet Kwiatkowski ◽  
Sylvia Titi Singer ◽  
Ashutosh Lal ◽  
...  
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Nutritional Status ◽  
Bone Mass ◽  
Body Fat ◽  
Lean Mass ◽  
Bone Health ◽  
Calcium Intake ◽  
Z Score ◽  
Percentage Body Fat

Abstract Optimal nutritional status is imperative for achieving the genetic potential for growth and development in children as well as for robust immune function and bone health in adults. Patients with thalassemia (Thal) are known to have abnormal growth, altered development and immune function and deficits in bone mass. For children, weight and height is commonly used to assess overall nutritional status, whereas for adults, body composition is a gross marker of an individual’s overall nutritional health. Nutritional status and body composition has not been explored in patients with Thal. To examine this, we have assessed body composition (fat, lean) and bone density by dual energy x-ray absorptiometry (DXA, Hologic Delphi A) in 370 subjects enrolled in a cross-sectional study of the Thal Clinical Research Network (TCRN), a North American collaborative research group. In addition to DXA, weight and height were measured, medical history obtained and a brief calcium food frequency and physical activity questionnaire completed. The total sample was divided into 2 groups: (TxThal) 257 transfused thalassemia major and E-beta thal patients (23.7 ± 11 yr, 131 male), and (NTxThal) 113 never or minimally transfused patients with other thalassemia syndromes (21.3 ± 13 yr, 50 male). Body mass index (BMI) was calculated (kg/m2) and cutoffs determined for children (<17=underweight, ≥30 obese) and adults (<18.5=underweight, ≥30 obese). As expected there was a high correlation between BMI and fat and lean mass by DXA (r=0.7 to 0.86, p<0.001). 6.2% of adults and 39.3% of children were classified as underweight by BMI and nearly 1/3 of children with Thal had abnormally low percentage body fat; while only 3.4% of adults and 2.2% of children were considered obese. Compared to median data from NHANES, adult patients with Thal are much leaner (BMI: 22.8±0.4) compared to contemporary adult Americans (28.1±0.2, p<0.0001). TxThal had more total body fat mass (14.3 vs 11.4 g, p<0.0001) and percentage body fat (27.3% vs. 24.9% p=0.007) compared to NTxThal. As has been observed in epidemiological studies of healthy subjects, calcium intake was inversely related to fat mass (p=0.009) as well as lean mass (p=0.007) after controlling for the effects of age, gender and diagnosis. Current physical activity level was a strong predictor of reduced body fat (p=0.007), whereas hemoglobin level was positively related to lean mass (p=0.001). Moreover, body fat was a positive predictor for height Z-score (p<0.0001). Low bone mass (BMD Z-Score <−2.0) was found in 50% of subjects, and BMD Z-score was moderately correlated with height Z-score (p<0.0001) and weight Z-score (p<0.0001). Though the majority of patients with Thal were classified as having a healthy body composition with very few obese patients, nearly 40% of the children in this sample were underweight. NTxThal appear at particular risk for underweight. These results suggest that an adequate amount of body fat is necessary for optimal growth and bone health in patients with Thal, and that calcium intake is associated with optimal body composition. These preliminary findings support the need for more careful study of nutritional status and its relationship to overall health in patients with thalassemia.

Calcium intake, physical activity and bone mass in pre-menopausal women

1991 ◽  
Vol 4 (3) ◽  
pp. 171-177 ◽  
Author(s):  
M. Nelson ◽  
A. B. Mayer ◽  
O. Rutherford ◽  
D. Jones
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Calcium Intake ◽  
Menopausal Women

Nutrition, Exercise, and Bone Status in Youth

1998 ◽  
Vol 8 (2) ◽  
pp. 124-142 ◽  
Author(s):  
Susan I. Barr ◽  
Heather A. McKay
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Calcium Intake ◽  
Peak Bone Mass ◽  
Bone Growth ◽  
Important Determinant ◽  
Critical Role ◽  
Childhood And Adolescence ◽  
Bone Status ◽  
The Impact

The maximal amount of bone mass gained during growth (peak bone mass) is an important determinant of bone mass in later life and thereby an important determinant of fraeiure risk. Although genetic factors appear lo be primary determinants of peak bone mass, environmental factors such as physical activity and nutrition also contribute. In this article, bone growth and maintenance are reviewed, and mechanisms are described whereby physical activity can affect bone mass. Studies addressing the effects of physical activity on bone status in youth are reviewed: Although conclusive data are not yet available, considerable evidence supports the importance of activity, especially activity initiated before puberty. The critical role of energy in bone growth is outlined, and studies assessing the impact of calcium intake during childhood and adolescence are reviewed. Although results of intervention trials are equivocal, other evidence supports a role for calcium intake during growth. Recommendations for physical activity and nutrition, directed lochildren and adolescents, are presented.

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