scholarly journals Do bone mineral content and density determine fracture in children? A possible threshold for physical activity

2017 ◽  
Vol 82 (3) ◽  
pp. 396-404 ◽  
Author(s):  
Ana Martins ◽  
Teresa Monjardino ◽  
Luísa Nogueira ◽  
Helena Canhão ◽  
Raquel Lucas
Keyword(s):  
Physical Activity ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content

scholarly journals The Positive Relationship between Moderate-to-Vigorous Physical Activity and Bone Mineral Content Is Not Mediated by Free Leptin Index in Prepubertal Children: The PANIC Study

2021 ◽  
Vol 18 (10) ◽  
pp. 5365
Author(s):  
Annie M. Constable ◽  
Josie E. Porter ◽  
Danielle Benger ◽  
Dimitris Vlachopoulos ◽  
Alan R. Barker ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content ◽  
Vigorous Physical Activity ◽  
Normal Weight ◽  
Cross Sectional ◽  
Prepubertal Children ◽  
Total Body ◽  
The Relationship

Purpose: Moderate-to-vigorous physical activity (MVPA) positively influences bone mineral content (BMC) in prepubertal children, but it is unknown whether this relationship is partially mediated by free leptin index. The aim of this study was to examine whether the relationship between MVPA and total body less head (TBLH) BMC is mediated or moderated by free leptin index in prepubertal children. Methods: We performed a cross-sectional analysis on 401 children (194 girls) from baseline examinations of the Physical Activity and Nutrition in Childhood Study. We applied the four-way decomposition mediation analysis method to assess whether free leptin index, measured from fasted blood samples, mediated the relationship between accelerometer-measured MVPA and TBLH BMC measured by dual-energy X-ray absorptiometry. Results: MVPA had a positive controlled direct effect on TBLH BMC in girls and boys (β = 0.010 to 0.011, p < 0.05). There was no mediation or interaction between MVPA, free leptin index and TBLH BMC in girls or boys (β = −0.000 to 0.001, p > 0.05). Conclusion: Our study indicates that MVPA positively influences TBLH BMC through pathways not related to free leptin index in predominantly normal-weight prepubertal children, likely primarily through mechanical loading. The relationships between MVPA, free leptin index and TBLH BMC may be influenced by other factors such as pubertal status and adiposity, so it is unknown whether these observations extend to overweight and obese children at different stages of puberty.

scholarly journals Influence of Physical Activity on Bone Mineral Content and Density in Overweight and Obese Children with Low Adherence to the Mediterranean Dietary Pattern

Nutrients ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1075 ◽  
Author(s):  
Victoria Muñoz-Hernandez ◽  
Lide Arenaza ◽  
Luis Gracia-Marco ◽  
Maria Medrano ◽  
Elisa Merchan Ramirez ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Dietary Pattern ◽  
Mineral Content ◽  
Overweight And Obesity ◽  
Moderate Intensity ◽  
Obese Children ◽  
Mediterranean Dietary Pattern ◽  
The Mediterranean

The objective of the present cross-sectional study was to examine the associations of physical activity and the adherence to the Mediterranean dietary pattern (MDP) with bone mineral content (BMC) and density (BMD) in children with overweight and obesity. A total of 177 (n = 80 girls) children with overweight and obesity aged 8 to 12 years old participated in the study. Both BMC and BMD were assessed by Dual-Energy X-ray absorptiometry. Dietary patterns were assessed by the KIDMED questionnaire and two 24-hour recalls. Physical activity was assessed by accelerometers for 7 consecutive days (24 hours/day). Low adherence to the MDP was observed in 82.4% of participants. Higher physical activity levels (of at least moderate intensity) and lower sedentary time were significantly associated with BMC and BMD in children with low adherence to the MDP (all p < 0.05). No associations were observed between physical activity and BMC and BMD in children with high adherence to the MDP. In conclusion, engaging in moderate to vigorous physical activity and reducing the time spent in sedentary behavior might be particularly beneficial for improving bone health in overweight or obese children with poor adherence to the Mediterranean dietary pattern.

scholarly journals Lean Mass is a Stronger Predictor of Bone Mineral Content and Density than Fat Mass and Physical Activity in Young and Old Women

2007 ◽  
Vol 39 (Supplement) ◽  
pp. S439
Author(s):  
Gunnhildur Hinriksdóttir ◽  
Sigurbjörn Á. Arngrímsson ◽  
Mark M. Misic ◽  
Daina M. Mallard ◽  
Ellen M. Evans
Keyword(s):  
Physical Activity ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Fat Mass ◽  
Lean Mass ◽  
Mineral Content

3-year follow-up results of bone mineral content and density after a school-based physical activity randomized intervention trial

Bone ◽  
2013 ◽  
Vol 55 (1) ◽  
pp. 16-22 ◽  
Author(s):  
Ursina Meyer ◽  
Dominique Ernst ◽  
Lukas Zahner ◽  
Christian Schindler ◽  
Jardena J. Puder ◽  
...  
Keyword(s):  
Physical Activity ◽  
Bone Mineral Content ◽  
Bone Mineral ◽  
Mineral Content ◽  
Intervention Trial ◽  
School Based ◽  
Randomized Intervention

Does childhood and adolescence fracture influence bone mineral content in young adulthood?

2010 ◽  
Vol 35 (3) ◽  
pp. 235-243 ◽  
Author(s):  
Chantal E. Kawalilak ◽  
Adam D.G. Baxter-Jones ◽  
Robert A. Faulkner ◽  
Donald A. Bailey ◽  
Saija A. Kontulainen
Keyword(s):  
Physical Activity ◽  
Bone Mineral Content ◽  
Young Adulthood ◽  
Bone Mineral ◽  
Mineral Content ◽  
Bone Fragility ◽  
Primary Objective ◽  
Childhood And Adolescence ◽  
Pediatric Fracture ◽  
Total Body

Previous fracture may predispose an individual to bone fragility because of impaired bone mineral accrual. The primary objective of the study was to investigate the influence of fractures sustained during childhood and (or) adolescence on total body (TB), lumbar spine (LS), femoral neck (FN), and total hip (TH) bone mineral content (BMC) in young adulthood. It was hypothesized that there would be lower TB, LS, FN, and TH BMC in participants who had sustained a pediatric fracture. Participant anthropometrics, physical activity, and BMC (measured with dual energy X-ray absorptiometry) were assessed longitudinally during childhood and adolescence (from 1991 to 1997), and again in young adulthood (2002 to 2006). Sex, adult height, adult lean mass, adult physical activity, and adolescent BMC adjusted TB, LS, FN, and TH BMC in young adulthood, for those who reported 1 or more fractures (n = 42), were compared with those who reported no fractures (n = 101). There were no significant differences (p > 0.05) in adjusted BMC between fracture and nonfracture groups at the TB, LS, FN, and TH sites in young adulthood. These results suggest that fractures sustained during childhood and adolescence may not interfere with bone mass in young adulthood at clinically relevant bone sites.

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