The Effects of a 7-month High Impact Jumping Intervention on Bone Mass in Pre-pubescent Boys and Girls PDF Download
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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: 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: David W. Dempster
Publisher: Academic Press
ISBN: 0128130741
Category : Science
Languages : en
Pages : 1950
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Book Description
Marcus and Feldman's Osteoporosis, Fifth Edition, is the most comprehensive, authoritative reference on this disease. Led by a new editorial team, this fifth edition offers critical information on reproductive and hormonal risk factors, new therapeutics, ethnicity, nutrition, therapeutics, management and economics, comprising a tremendous wealth of knowledge in a single source not found elsewhere. Written by renowned experts in the field, this two-volume reference is a must-have for biomedical researchers, research clinicians, fellows, academic and medical libraries, and any company involved in osteoporosis drug research and development. - Summarizes the latest research in bone biology and translational applications in a range of new therapeutic agents, including essential updates on therapeutic uses of calcium, vitamin D, SERMS, bisphosphonates, parathyroid hormone, and new therapeutic agents - Recognizes the critical importance of new signaling pathways for bone health, including Wnt, OPG and RANK, of interest to both researchers who study bone biology and clinicians who treat osteoporosis - Offers new insights into osteoporosis associated with menopause, pre-menopause, chronic kidney disease, diabetes, HIV and other immune disorders
Author: Robert Marcus
Publisher: Academic Press
ISBN: 0080553478
Category : Medical
Languages : en
Pages : 1987
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Book Description
Now in its third edition, Osteoporosis, is the most comprehensive, authoritative reference on this disease. Written by renowned experts in the field, this two-volume reference is a must-have for academic and medical libraries, physicians, researchers, and any company involved in osteoporosis research and development. Worldwide, 200 million women between 60-80 suffer from osteoporosis and have a lifetime risk of fracture between 30 and 40 percent continuing to make osteoporosis a hot topic in medicine. This newest edition covers everything from basic anatomy and physiology to diagnosis, management and treatment in a field where direct care costs for osteoporitic fractures in the U.S. reach up to $18 billion each year.NEW TO THIS EDITION:*Recognizes the critical importance of the Wnt signaling pathway for bone health *Incorporates new chapters on osteocytes, phosphatonins, mouse genetics, and CNS and bone *Examines essential updates on estrogen prevention and treatment and the recent results from the WHI *Discusses the controversial topics of screening and clinical trial design for drug registration *Includes essential updates on therapeutic uses of calcium, vitamin D, SERMS, bisphosphonates, and parathyroid hormone * Offers critical reviews of reproductive and hormonal risk factors, ethnicity, nutrition, therapeutics, management, and economics comprising a tremendous wealth of knowledge in a single source not found elsewhere
Author: Benjamin Z. Leder
Publisher: Springer Nature
ISBN: 3319692879
Category : Medical
Languages : en
Pages : 518
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Book Description
Completely revised and updated, and utilizing the most current evidence and practice guidelines for the treatment of osteoporosis, this comprehensive third edition discusses the basic aspects of bone metabolism, the pathophysiology of osteoporosis, current diagnostic techniques and medical treatment strategies. Osteoporosis is a common disorder that is prevalent in over 20 million Americans over the age of 60. One and a half million osteoporotic fractures occur in the United States every year, including 300,000 hip fractures. Mortality rates after hip fracture approach 25%, with another 50% of patients experiencing a major decrease in their prior level of independence and quality of life. Despite the wide prevalence and severe consequences of osteoporosis, it remains a disorder that is severely under-diagnosed and treated. In this context, specialists and primary care physicians alike are having increasing difficulty keeping up with the rapid changes to the field and incorporating these advances to clinical care. In the years since the last edition of this book was published, the osteoporosis field has changed drastically. In addition to revising and updating existing chapters and removing a few that are no longer as relevant, new chapters discuss an advanced understanding of the cellular and molecular mechanisms underlying the disorder, the introduction of new diagnostic imaging techniques, a more nuanced appreciation of the risks and benefits of osteoporosis therapies, and the introduction of two new classes of osteoporosis medications. Following the format of the second edition, and including helpful key points at the opening of each chapter, this text will present a comprehensive overview of both the basic and clinical concepts relating to each topic, when appropriate. Chapter authors were chosen based on their high level of expertise and leadership in the field. Taken together, this text should thus be of great interest to physicians of multiple specialties, allied health professionals, as well as basic and clinical researchers.
Author: Robyn K. Fuchs
Publisher:
ISBN:
Category : Exercise for children
Languages : en
Pages : 326
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Book Description
To examine the potential for exercise to build bone mass during growth, objectives of this dissertation included: 1) determine the effects of 7 months of jumping followed by 7 months of detraining on hip and spine bone mass in the prepubertal children; 2) determine variables that best predict bone mineral content (BMC;g) of the hip and spine in order to develop prediction equations for healthy, Caucasian children, specific to Hologic fan-beam DXA machines; and 3) to examine the potential synergy between calcium intake and the bone response to jump training in prepubertal children. Results/Conclusions Objective 1 (Chapters 2, 3 and 4): children who performed 300 jumps/week at a load magnitude of 8 body weights had significantly greater 7-month changes for BMC at the femoral neck and lumbar spine than controls (4.5% and 3.1%, respectively), and significantly greater 7-month changes for bone area (BA; cm2) at the femoral neck than controls (2.9%). After 7- months of detraining (no box jumping exercises) the jumping group maintained 4% greater BMC and 4% greater BA at the femoral neck than controls. By contrast, at the spine, gains in BMC from the intervention were not retained after an equivalent period of detraining. These data indicate that high-impact jumping enhances growth at the hip. Results/Conclusions Objective 2 (Chapter 5): Age, height, and weight were entered as predictor variables in order to create regression models for healthy, young Caucasian boys and girls. Of these, height and weight independently predicted femoral neck and total hip BMC in both boys (femoral neck: R2=.48, total hip: R2=.63) and girls (femoral neck: R2=.49, total hip R2=.65). Height best predicted spine BMC in boys (R2=.58), but both height and weight independently predicted spine BMC in girls (R2=.54). We report that height and weight not age, best predict bone mineral content at the hip and spine. Results/Conclusions Objective 3 (Chapter 6): Children responded similarly to the jumping program regardless of calcium intake. 73% of our population had dietary intakes of calcium that met the recommended values for their age group.
Author: Hong-wen Deng
Publisher: World Scientific
ISBN: 9812701222
Category : Medical
Languages : en
Pages : 562
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Book Description
This book reviews important topics in osteoporosis, with the emphasis on both clinical management and basic research of the disease. From the clinical perspective, topics covering pathogenesis, diagnosis, and treatment of osteoporosis are extensively elaborated. Several more chapters complement clinical overview of osteoporosis, that discuss the effects of nutrition and exercise to bone health, the application of biochemical markers in osteoporosis diagnosis, novel potential drug targets for osteoporosis treatment, and osteoporosis in males and in children. As the prevalence of osteoporosis now reaches epidemiological levels, epidemiology and social impacts of osteoporosis is also reviewed in the book. Basic research on osteoporosis is also highlighted in the book, with a number of chapters dedicated to the review of genetics of osteoporosis, animal models for osteoporosis, and statistical methods in osteoporosis study.
Author: Robin M. Daly
Publisher: Karger Medical and Scientific Publishers
ISBN: 3805582757
Category : Medical
Languages : en
Pages : 173
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Book Description
Osteoporosis and related fractures are a major public health problem globally. Although traditionally considered to be a disease affecting the elderly, increased recognition that osteoporosis may have its foundation early in life has stimulated substantial research interest into factors which can influence skeletal development, including both genetic and lifestyle factors. This book provides a summary and integrative review of the current state of knowledge of factors that influence the development of bone health during childhood and adolescence. The focus is on the role of physical activity for optimizing bone development. Other relevant topics that are reviewed include the influence of genetics, nutrition, and hormonal factors on skeletal development. In addition, there are expert views on practical lifestyle strategies and guidelines that can be adopted to optimize bone health and prevent fractures during growth. The book provides an excellent source of recent information for exercise specialists, pediatricians, nutritionists, biomedical researchers, health promotion worker and public health professionals.
Author: Jonathan H. Tobias
Publisher: Frontiers Media SA
ISBN: 2889197514
Category : Diseases of the endocrine glands. Clinical endocrinology
Languages : en
Pages : 101
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Book Description
This research topic is focused on recent advances in our understanding of effects of mechanical loading on the skeleton, and research methods used in addressing these. Though it is well established that mechanical loading provides an essential stimulus for skeletal growth and maintenance, there have been major advances recently in terms of our understanding of the molecular pathways involved, which are thought to provide novel drug targets for treating osteoporosis. The articles included in this topic encompass the full spectrum of laboratory and clinical research, and range from review articles, editorials, hypothesis papers and original research articles. Together, they demonstrate how mechanical loading underpins many aspects of bone biology, including the pathogenesis and treatment of osteoporosis and other clinical disorders associated with skeletal fragility.
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: Victor R. Preedy
Publisher: Springer Science & Business Media
ISBN: 1441917950
Category : Medical
Languages : en
Pages : 3113
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Book Description
Growth is one of the human body’s most intricate processes: each body part or region has its own unique growth patterns. Yet at the individual and population levels, growth patterns are sensitive to adverse conditions, genetic predispositions, and environmental changes. And despite the body’s capacity to compensate for these developmental setbacks, the effects may be far-reaching, even life-long. The Handbook of Growth and Growth Monitoring in Health and Disease brings this significant and complex field together in one comprehensive volume: impact of adverse variables on growth patterns; issues at different stages of prenatal development, childhood, and adolescence; aspects of catch-up growth, endocrine regulation, and sexual maturation; screening and assessment methods; and international perspectives. Tables and diagrams, applications to other areas of health and disease, and summary points help make the information easier to retain. Together, these 140 self-contained chapters in 15 sections [ok?] cover every area of human growth, including: Intrauterine growth retardation. Postnatal growth in normal and abnormal situations. Cells and growth of tissues. Sensory growth and development. Effects of disease on growth. Methods and standards for assessment of growth, and more. The Handbook of Growth and Growth Monitoring in Health and Disease is an invaluable addition to the reference libraries of a wide range of health professionals, among them health scientists, physicians, physiologists, nutritionists, dieticians, nurses, public health researchers, epidemiologists, exercise physiologists, and physical therapists. It is also useful to college-level students and faculty in the health disciplines, and to policymakers and health economists.
