Reducing Stress Fracture in Physically Active Military Women (1998) / Chapter Skim
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A: Workshop Agenda and Abstracts
A: Workshop Agenda and Abstracts
Pages 69-92
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From page 69... ...
AGENDA 8:30 A.M.-:40 A.M. Welcome on Behalf of the Committee on Body Composition, Nutrition, and Health of Military Women Barbara 0.
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From page 70... ...
Naval Health Research Center, San Diego, CA 9:50 A.M.-10:10 A.M. Rehabilitation of Stress Fractures in Army Basic Trainees CPTPau!
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IlI. DIET AND PHYSICAL ACTIVITY Quantitative Ultrasound and Other Risk Factors for Stress Fracture during Basic Training in Female U.S.
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From page 72... ...
members and speakers immediately following in the Rotunda Dinner for committee and military liaison pane] members and speakers following reception in the Members Room Presentation: The Art and Science of Longitudinal Studies of Healthy Young People Tom Lloyd, The Pennsylvania State University College of Medicine, Hershey Medical Center
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From page 73... ...
Dietary factors, in particular calcium levels, may contribute to the development of stress fractures via influences on bone density and bone remodeling. In animal studies, a calcium-deficient diet decreased the ability of bone to adapt to mechanical strain, while high dietary calcium intake had a favorable effect on bone biomechanical properties.
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From page 74... ...
PHYSICAL TRAINING INTERVENTIONS TO REDUCE STRESS FRACTURE INCIDENCE IN NAVY AND MARINE CORPS RECRUIT TRAINING CDR Richard A Shaffer, MSC, USN, Ph.D., MP.H., Naval Health Research Center, San Diego, CA 92186 Introduction Stress fractures during military trading have a high fiscal and operational impact in Navy and Manne Corps populations.
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From page 75... ...
· Physical training modifications, based on identified risk factors and military training goals, are under development for female Marine Corps recruits. STRESS FRACTURE EXPERIENCE AT FORT JACKSON CPT Paul Stoneman, MS., USA, Fitness Training Company, 120th Adjutant General Battalion, Fort Jackson, SC 29207 Introduction Fort Jackson is We largest integrated Army basic combat trading (B CT)
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From page 76... ...
IS THERE A GENETIC BASIS FOR STRESS FRACTURES? Eitan Friedman, MD., Ph.D.; Liat Ries, MSc.; Galia Yablonsk'-Gat, Ph.D.; Iris Vered, MD.; Uri Givon, MD.; and Joshua Shemer, M.D., The Suzanne Levy Oncogenetics Unit and the Endocrine Institute, Sheba Medical Center and the Medical Corps, IDF, Israel Several lines of indirect evidence made it plausible (and testable)
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From page 77... ...
Brodine Introduction Intense military physical training subjects the bones of Me lower limb to repetitive bending and torsional stresses that can lead to failure or stress fracture. Because not ever litary recruit suffers a stress fracture during training suggests that individuals with stress fractures have weaker bones.
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Recruits were followed through the 12-wk training to ascertain stress fractures using standard diagnostic criteria. Results A total of 36 recruits (5.2 %)
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Unforturlately, information regarding Be rates arid magnitudes of such charge arid Be factors influencing such change in humans are scanty. Whether pretrairung exercise regimens can be designed to precondition bones to minimize stress fractures has yet to be determined.
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; menstrual onset and regularity; birth control pills; current and lifetime calcium intake and general nutrition; corticosteroid usage)
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Means and relative risks are presented in Table A-3. For a subset of 840 soldiers, the risk factors were combined in one backwards logistic regression analysis.
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Both stress fracture during military basic training and osteoporotic fracture are examples of fragility fracture. Evaluating fitness, QUS, and smoking history-three independent determinants of stress fracture risk gives a complete yet conveniently obtained picture of stress
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From page 83... ...
Specker, Ph.D., South Dakota State University, Broohngs, SD 57007 Both calcium intake and physical activity are thought to affect bone mass accretion early In life and bone loss later In life. However, results from randomized trials are not consistent.
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Some concern has been raised that high calcium Intakes compromise iron, magnesium, and zinc status. Several recent studies have shown no had effects on magnesium status of up to 2 g/d of calcium intake.
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female population (USDA, Diet and Health Knowledge Survey, 1988-1991) identified inadequate calcium intake with the potential health outcome of osteoporosis, even Cough 50 percent of female soldiers believed their diets were too low In calcium.
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It is well recognized that these situations result in increased bone turnover, bone loss, nitrogen loss, and skeletal muscle Reconditioning. A series of studies were conducted in viva that focused on improving an existing catabolic model of inactivity and testing countermeasures to prevent nitrogen, muscle, and bone loss within the enhanced catabolic model.
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From page 87... ...
In these penods, formation exceeds resorption avid accretion of bone and positive skeletal balance. Turnover, also termed remocleling, reaches a nadir as peak bone mass is attained during the third and fourth decades and the skeleton is in zero balance.
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From page 88... ...
is abundant in the adult skeleton and plays a central role In remodeling as well as In acquisition of peak bone mass. Moreover, growth hormone and IGF-1 are major determinants of tears body mass.
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From page 89... ...
These data suggest that IGF-1 may play a key role in determining peak bone mass, and the heritable differences In the expression of IGF-l could detente muscuToskeletal strength and balance. These findings, produced through the unique collaborative efforts of several investigators, may have future implications for screening recruits who are at high risk for subsequent stress fractures.
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From page 90... ...
Recognition that calcium intake by young American women declined markedly in the past three decades while the prevalence of osteoporosis among older women increased dramatically has led to widespread investigations of the relationships between calcium intake and bone health. However.
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From page 91... ...
Because Caucasian women acquire at least 95 percent of their bone mass by age 20, the volunteers must be studied again at and after this age. With regard to bone health, attention has been focused on fracture reduction, bone density has been used to reflect fracture risk.
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