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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
All U.S. Navy service members are required to meet percent body fat (%BF) standards as a condition of military service. Naval personnel who exceed standards for %BF can be separated from active duty. Currently, %BF predictions are determined by circumference measurements and a prediction equation (circumference equation = CEQ). In view of the importance these prediction results have for personnel retention, a validation study was undertaken to determine the accuracy of %BF prediction for a population determined to be overfat by the CEQ. The population for the validation study comprised men with 22%BF or greater and women with 30%BF or greater. Values for %BF were determined for 49 men and 50 women by hydrostatic weighing (HW) and circumference measurements at the Naval Submarine Medical Research Laboratory (NSMRL) using a regression equation developed at the Naval Health Research Center (NHRC), San Diego, California. The HW and CEQ values were compared to a superset of the original NHRC population. The correlation coefficients for the NSMRL validation group were lower than those reported in the original NHRC group. The results are attributed to the restricted range of NSMRL data and greater error of prediction at extreme ranges of values. A medical diagnostic model was used to evaluate the sensitivity, specificity, and predictive value of CEQ. It shows that the Navy's current procedures produce a 6.8 to 18% false positive rate for individual declared as having excess body fat. The data suggest that caution should be utilized when using the CEQ method for individual career decisions. Body fat, Prediction, Hydrostatic weighing, Circumference.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
All U.S. Navy service members are required to meet percent body fat (%BF) standards as a condition of military service. Naval personnel who exceed standards for %BF can be separated from active duty. Currently, %BF predictions are determined by circumference measurements and a prediction equation (circumference equation = CEQ). In view of the importance these prediction results have for personnel retention, a validation study was undertaken to determine the accuracy of %BF prediction for a population determined to be overfat by the CEQ. The population for the validation study comprised men with 22%BF or greater and women with 30%BF or greater. Values for %BF were determined for 49 men and 50 women by hydrostatic weighing (HW) and circumference measurements at the Naval Submarine Medical Research Laboratory (NSMRL) using a regression equation developed at the Naval Health Research Center (NHRC), San Diego, California. The HW and CEQ values were compared to a superset of the original NHRC population. The correlation coefficients for the NSMRL validation group were lower than those reported in the original NHRC group. The results are attributed to the restricted range of NSMRL data and greater error of prediction at extreme ranges of values. A medical diagnostic model was used to evaluate the sensitivity, specificity, and predictive value of CEQ. It shows that the Navy's current procedures produce a 6.8 to 18% false positive rate for individual declared as having excess body fat. The data suggest that caution should be utilized when using the CEQ method for individual career decisions. Body fat, Prediction, Hydrostatic weighing, Circumference.
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 030904586X
Category : Technology & Engineering
Languages : en
Pages : 371
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Book Description
This book surveys the entire field of body composition as it relates to performance. It includes a clear definition of terminology and a discussion of the various methods for measuring body composition. The authored papers represent a state-of-the-art review of this controversial field and address questions such as: What is a better measure of body compositionâ€"body fat or lean body mass? Does being overweight for one's height really affect performance? The book also addresses the issue of physical appearance as it relates to body fatness and performance. It includes an in-depth discussion of many of the topics of interest to those involved in sports medicine and exercise physiology.
Author: Paul F. Thomas
Publisher:
ISBN:
Category : Body composition
Languages : en
Pages : 144
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Book Description
Author: Keith A. Peterson
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
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Book Description
This study compared several weight-height indices with an estimate of percent body fat based on a few circumference measurements. The utility of alternative obesity/overfatness measures was assessed by comparing the strength of their associations with several measures of physical fitness, including a 1.5-mile run/walk, 2-minute sit-ups test, sit-reach flexibility test, and an average fitness score. Study participants included 5710 Navy men and 477 Navy women, For men, percent body fat estimated from circumference measures predicted all the components of physical fitness significantly better than any of the weight-height indices. For women, estimated percent body fat was a significantly better predictor of two of the four fitness measures. Overall, the pattern of associations between physical fitness and both the estimated percent body fat and the weight-height measures was similar for men and women; however, the correlations between the percent fat and the fitness measures were stronger for men than for women. These findings suggest that the Navy's procedure for estimating fatness using circumference measures provides a better screen for physical fitness testing than would any of the commonly used weight-height indices.
Author: David C. Nieman
Publisher: Human Kinetics Publishers
ISBN:
Category : Anthropometry
Languages : en
Pages : 94
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Book Description
Author: American College of Sports Medicine
Publisher: Lippincott Williams & Wilkins
ISBN: 1609136055
Category : Medical
Languages : en
Pages : 480
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Book Description
The flagship title of the certification suite from the American College of Sports Medicine, ACSM's Guidelines for Exercise Testing and Prescription is a handbook that delivers scientifically based standards on exercise testing and prescription to the certification candidate, the professional, and the student. The 9th edition focuses on evidence-based recommendations that reflect the latest research and clinical information. This manual is an essential resource for any health/fitness and clinical exercise professional, physician, nurse, physician assistant, physical and occupational therapist, dietician, and health care administrator. This manual give succinct summaries of recommended procedures for exercise testing and exercise prescription in healthy and diseased patients.
Author: Steven Heymsfield
Publisher: Human Kinetics
ISBN: 9780736046558
Category : Anthropometry
Languages : en
Pages : 544
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Book Description
The 2nd edition of Human Body Composition includes updated information and new chapters. The editors and 35 contributors are well respected researchers in the field of body composition science. This is one of few texts that provides comprehensive coverage of body composition research. The primary intent is to present current information on research methods. This book can serve as a textbook for those who are students or new researchers. Descriptions of various methods and background information are imparted in great detail with numerous references. New chapters address energy expenditure, animal body composition, molecular genetics and body composition as it relates to disease states of cancer, HIV, obesity and certain inflammatory diseases like rheumatoid arthritis, inflammatory bowel disease, congestive heart failure and chronic obstructive pulmonary disease. This book is recommended for students and new researchers in the field of body composition research who need to learn various methods, histories and practical applications--Publisher's description.
Author: George A. Bray
Publisher: CRC Press
ISBN: 020391337X
Category : Medical
Languages : en
Pages : 1064
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Book Description
Offering perspectives on the history, prevalence and genetics of obesity, this book examines the origins and etiology of obesity. It considers the relationship between behavioural neuroscience and obesity.
Author: Robin H. Lock
Publisher: John Wiley & Sons
ISBN: 1119163668
Category : Mathematics
Languages : en
Pages : 819
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Book Description
Statistics: Unlocking the Power of Data, 2nd Edition continues to utilize these intuitive methods like randomization and bootstrap intervals to introduce the fundamental idea of statistical inference. These methods are brought to life through authentically relevant examples, enabled through easy to use statistical software, and are accessible at very early stages of a course. The program includes the more traditional methods like t-tests, chi-square texts, etc. but only after students have developed a strong intuitive understanding of inference through randomization methods. The focus throughout is on data analysis and the primary goal is to enable students to effectively collect data, analyze data, and interpret conclusions drawn from data. The program is driven by real data and real applications.
Author:
Publisher: FEMA
ISBN:
Category :
Languages : en
Pages : 258
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Book Description
