The Effects of a 16 Week Physical Activity Program on Bone Mineral Density in Lean and Obese Prepubescent Children Ages 8-11 PDF Download
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Author: Ryan Cody Squibb
Publisher:
ISBN:
Category : Bones
Languages : en
Pages : 107
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Book Description
The current obesity epidemic has become a major health crisis to citizens around the United States. Obesity has been successfully linked to a plethora of different disease states including cardiovascular disease, diabetes, and stroke. Although many people might not recognize the trends, the obesity epidemic is putting children as young as 5 and 6 years of age at a health disadvantage compared to children of a healthier weight. With 17% of American's children being classified as obese, it is important to uncover what detrimental influences obesity has on the childhood body. Specifically, with respect to bone health, there is a good amount of information supporting the concept that there is increased acquisition of bone mineral density (BMD) through exercise in children. However, none of these studies have investigated the effects of physical exercise on BMD in obese children compared to lean children. Previous studies show that overweight and obese children are at an increased risk of bone fracture due to low bone mass and bone area for weight. An increased response in BMD or bone mineral content (BMC) of obese children due to exercise could improve bone strength and decrease fracture risk. The purpose of this study was to investigate whether there were differences in BMD acquisition in lean and obese children in response to a 16-week exercise intervention. Dual energy X-absorptiometry (DEXA) was used to assess the change in BMD in children at week 0 and 16. Participants were grouped by body mass index percentile as obese (n=41) or lean (n=19) and then randomly assigned to exercise or control groups. The exercise protocol consisted of aerobic activities such as running, basketball, tennis, football, etc. Participants were required to meet a heart rate average of>140 beats per minute each one-hour exercise session. The protocol for the study was reviewed and approved by the East Carolina University Institutional Review Board. Both lean and obese exercise groups increased total body bone mineral density (+0.026±0.001g/cm2, +0.028±0.001g/cm2 respectively; p
Author: Ryan Cody Squibb
Publisher:
ISBN:
Category : Bones
Languages : en
Pages : 107
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Book Description
The current obesity epidemic has become a major health crisis to citizens around the United States. Obesity has been successfully linked to a plethora of different disease states including cardiovascular disease, diabetes, and stroke. Although many people might not recognize the trends, the obesity epidemic is putting children as young as 5 and 6 years of age at a health disadvantage compared to children of a healthier weight. With 17% of American's children being classified as obese, it is important to uncover what detrimental influences obesity has on the childhood body. Specifically, with respect to bone health, there is a good amount of information supporting the concept that there is increased acquisition of bone mineral density (BMD) through exercise in children. However, none of these studies have investigated the effects of physical exercise on BMD in obese children compared to lean children. Previous studies show that overweight and obese children are at an increased risk of bone fracture due to low bone mass and bone area for weight. An increased response in BMD or bone mineral content (BMC) of obese children due to exercise could improve bone strength and decrease fracture risk. The purpose of this study was to investigate whether there were differences in BMD acquisition in lean and obese children in response to a 16-week exercise intervention. Dual energy X-absorptiometry (DEXA) was used to assess the change in BMD in children at week 0 and 16. Participants were grouped by body mass index percentile as obese (n=41) or lean (n=19) and then randomly assigned to exercise or control groups. The exercise protocol consisted of aerobic activities such as running, basketball, tennis, football, etc. Participants were required to meet a heart rate average of>140 beats per minute each one-hour exercise session. The protocol for the study was reviewed and approved by the East Carolina University Institutional Review Board. Both lean and obese exercise groups increased total body bone mineral density (+0.026±0.001g/cm2, +0.028±0.001g/cm2 respectively; p
Author: Committee on Physical Activity and Physical Education in the School Environment
Publisher: National Academies Press
ISBN: 0309283140
Category : Medical
Languages : en
Pages : 503
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Book Description
Physical inactivity is a key determinant of health across the lifespan. A lack of activity increases the risk of heart disease, colon and breast cancer, diabetes mellitus, hypertension, osteoporosis, anxiety and depression and others diseases. Emerging literature has suggested that in terms of mortality, the global population health burden of physical inactivity approaches that of cigarette smoking. The prevalence and substantial disease risk associated with physical inactivity has been described as a pandemic. The prevalence, health impact, and evidence of changeability all have resulted in calls for action to increase physical activity across the lifespan. In response to the need to find ways to make physical activity a health priority for youth, the Institute of Medicine's Committee on Physical Activity and Physical Education in the School Environment was formed. Its purpose was to review the current status of physical activity and physical education in the school environment, including before, during, and after school, and examine the influences of physical activity and physical education on the short and long term physical, cognitive and brain, and psychosocial health and development of children and adolescents. Educating the Student Body makes recommendations about approaches for strengthening and improving programs and policies for physical activity and physical education in the school environment. This report lays out a set of guiding principles to guide its work on these tasks. These included: recognizing the benefits of instilling life-long physical activity habits in children; the value of using systems thinking in improving physical activity and physical education in the school environment; the recognition of current disparities in opportunities and the need to achieve equity in physical activity and physical education; the importance of considering all types of school environments; the need to take into consideration the diversity of students as recommendations are developed. This report will be of interest to local and national policymakers, school officials, teachers, and the education community, researchers, professional organizations, and parents interested in physical activity, physical education, and health for school-aged children and adolescents.
Author: Fredrick HAHN
Publisher: AMACOM Div American Mgmt Assn
ISBN: 0814413552
Category : Health & Fitness
Languages : en
Pages : 178
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Book Description
All parents want their children to be healthy, fit, and more active, but there is a pervasive myth that keeps many kids from reaching their full potential. A popular misconception is that young athletes shouldn’t engage in strength training because it is harmful. However, current research, including a recent study from the Mayo Clinic, indicates that nothing could be further from the truth. Strength training is the single most effective exercise method for reversing adolescent obesity and can dramatically alter and improve a child's body composition. With his blockbuster book The Slow BurnTM Fitness Revolution , renowned personal trainer Fredrick Hahn revealed the secret to strengthening muscles, enhancing flexibility, burning fat and improving performance in just 30 minutes a week. Now, in Strong Kids, Healthy Kids, he shows parents, caregivers, teachers, and doctors how his fitness program can change the lives of children and teens everywhere, no matter what their athletic ability. Whether a child is inactive or a competitive athlete looking to take his performance to the next level, he can become much stronger and fitter. As the founder of the Mighty Tykes and TeensTM program, Hahn is an expert on child fitness. Here, he shows kids how to: get strong fast • increase bone density and resistance to injury • improve cardiovascular health • enhance flexibility • increase their metabolism and reduce body fat With this proven program, all children can build their self-esteem, improve their performance, and lead healthier lives.
Author: Karim Khan
Publisher: Human Kinetics
ISBN: 9780880119689
Category : Medical
Languages : en
Pages : 296
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Book Description
With an emphasis on exercise and its effect on bone, this text includes sections on basic anatomy and the physiology of the structure and function of bone as well as exercises to maintain a healthy skeleton through to old age.
Author: Robyn K. Fuchs
Publisher:
ISBN:
Category : Bone densitometry
Languages : en
Pages : 196
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Book Description
High impact loading activities such as jumping, performed during childhood is advocated as one preventive method for increasing peak bone mass. Thus, we conducted a randomized intervention to examine the effect of high impact loading on bone mass in 34 pre-pubescent boys and girl over a seven month period. Participants meeting all inclusion criteria were randomized into either a jumping (n=18) or stretching group (n=16), both of which exercised three times per week for 15 minutes. The jumping group completed 100 jumps off 24-inch boxes each session, while the stretching group performed low impact flexibility exercises. Attrition was 85% (6 drop outs), with an overall attendance rate of 95%. Bone area and bone mineral content (BMC) was assessed using dual energy x-ray absorptiometery (Ho logic QDR 1000/W) for the left hip (femoral neck, greater trochanter, total hip), and lumbar spine (L[subscript 2-4]). Other measures were body composition (Lang skinfold calipers); physical activity (self-report questionnaire); and calcium intake (food survey). All measurements were assessed at baseline and 7 months. Significance is denoted as p.05. Analysis of variance (ANOVA) revealed no baseline difference between groups for age, height, weight, body fat, physical activity, or calcium intake (p.05); however, gender differences were found for FN BMC at baseline (p.05). Repeated measures ANOVA identified significant group differences for FN BMC (p=.015), with a trend for significance for FN area (p=.055). No significant differences in BMC or bone area were found at all other skeletal sites (p.05). No group by gender interactions were found at baseline or at the completion of the seven month intervention. No significant differences between groups were identified for body composition, physical activity, or calcium intake in repeated measures ANOVA analyses (p>.05). In conclusion, 100 jumps performed 3 times per week at approximately 8x body weight were sufficient to stimulate an osteogenic response at the femoral neck in pre-pubescent boys and girls. Implementing jumping exercises into regular physical activity programs during pre-pubescent growing years may increase peak bone mass and potentially reduce the onset of osteoporosis.
Author: United States Public Health Service
Publisher:
ISBN: 9781410219275
Category : Health & Fitness
Languages : en
Pages : 0
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Book Description
This first-ever Surgeon General's Report on bone health and osteoporosis illustrates the large burden that bone disease places on our Nation and its citizens. Like other chronic diseases that disproportionately affect the elderly, the prevalence of bone disease and fractures is projected to increase markedly as the population ages. If these predictions come true, bone disease and fractures will have a tremendous negative impact on the future well-being of Americans. But as this report makes clear, they need not come true: by working together we can change the picture of aging in America. Osteoporosis, fractures, and other chronic diseases no longer should be thought of as an inevitable part of growing old. By focusing on prevention and lifestyle changes, including physical activity and nutrition, as well as early diagnosis and appropriate treatment, Americans can avoid much of the damaging impact of bone disease and other chronic diseases. This Surgeon General's Report brings together for the first time the scientific evidence related to the prevention, assessment, diagnosis, and treatment of bone disease. More importantly, it provides a framework for moving forward. The report will be another effective tool in educating Americans about how they can promote bone health throughout their lives. This first-ever Surgeon General's Report on bone health and osteoporosis provides much needed information on bone health, an often overlooked aspect of physical health. This report follows in the tradition of previous Surgeon Generals' reports by identifying the relevant scientific data, rigorously evaluating and summarizing the evidence, and determining conclusions.
Author: Marcia Kelly Scott
Publisher:
ISBN:
Category : Body composition
Languages : en
Pages : 364
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Book Description
Author: Joshua Reid Vick
Publisher:
ISBN:
Category : Aerobic exercises
Languages : en
Pages : 93
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Book Description
C-reactive protein (CRP) is a non-specific marker of systemic inflammation that has been associated with heart disease, obesity, and metabolic disorders in adults and children. Previous physical activity interventions have yielded inconsistent results regarding the effects of exercise training on CRP concentrations in children. Purpose: The purpose of this study was to determine the effects of a 16-week aerobic activity intervention on serum CRP concentrations in 8-11 year old African American and Caucasian children, and to evaluate the extent to which body composition influenced this outcome. Methods: Serum CRP was analyzed from blood samples collected before and after 16 weeks of an aerobic physical activity intervention in 60 healthy pre-pubescent children (Tanner stage
Author: Derek P. Hales
Publisher:
ISBN:
Category : Education, Elementary
Languages : en
Pages : 198
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Book Description
Author: Jeremy Bauer
Publisher:
ISBN:
Category : Bones
Languages : en
Pages : 164
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Book Description
Introduction: Recent reports in exercise related bone research have shown increased bone mineral content (BMC) at the femoral neck for prepubescent children participating in exercise programs consisting of repeated drop landings from a height of 61 cm. Increases in BMC from this type of exercise are believed to be the result of both high rate and magnitude of loading at the proximal femur. However, the dynamic characteristics associated with these landings in children have not been studied. Purpose: To describe the dynamic characteristics of children during landing and to quantify the forces associated with an activity associated with increases in bone mass. Methods: 13 prepubescent children (males=8, females=5, age 9.3 ± 0.7 years) who had previously completed drop landings over a 7 month period as part of an exercise intervention to increase bone mass participated in this research. Each subject performed 100 drop landings onto a force plate from a height of 61 cm. Ground reaction forces and two-dimensional kinematic data were recorded. Hip joint reaction forces were calculated using inverse dynamics based on a four segment rigid body model. Vertical ground reaction force and displacement data were fit to two single degree of freedom models, the Voigt and standard linear solid (SLS). The goodness of fit was quantified using the standard deviation of the error (SDE) between the experimental and the predicted data. Results: Peak vertical ground reaction forces were 8.5 ± 2.2 (mean ± SD) body weights (BW) while hip joint reactions were 6.0 ± 1.8 BW. Loading rates for ground reaction forces during initial impact were in excess of 470 BW/s. Across 100 jump trials, ground reaction forces changed significantly for 5 subjects (4 increase, 1 decrease, p
