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Energy Cost of Heavy Load Carriage and Prolonged Walking in ROTC Collegiate Participants

Energy Cost of Heavy Load Carriage and Prolonged Walking in ROTC Collegiate Participants PDF Author: Sara Krajewski
Publisher:
ISBN:
Category : Exercise
Languages : en
Pages : 76

Book Description
The load military service members carry while marching has increased throughout history, and the military routinely uses rucksacks that range in weight from 22-68 kilograms, depending on the type of mission and weather conditions (Van Dijk, 2009). Previous studies have examined the energy cost of load carriage under relatively short time frames, such as 30-45 minutes, but typical marching time greatly exceeds these limits during military operations. Few studies have examined marching times upwards of two hours with a fixed load during flat, incline, and decline conditions with trained military personnel. PURPOSE: The purpose of this study was to measure the energy cost of prolonged marching under heavy load. METHODS: Eleven members of East Carolina University's ROTC completed four days of testing, including a control day when they walked without load and three load carriage days that were randomized to a flat stage, -4% decline, and 5% incline. Load mass was 30 kg, and subjects attempted to walk for two hours under each treatment condition. Metabolic data was collected during the last five minutes of every twenty minute stage. RESULTS: Of the nine participants who completed four days of testing, only two were physically able to complete all of the two hour marches. In statistical analysis, Kaplan-Meier survival curves were used to measure load carriage fail time between groups (those who finished and those who did not) and by testing condition. Significance was found for VO2 between groups of those who completed versus those who did not complete the two hour tests at p=0.0098. VCO2 was found to be significant between groups at p=0.0084. Significance by test was found to be significant for VO2 during the flat phase. VE and RER were not significant. Based on thresholds, the incline proved to be the most physically challenging test, followed by the flat then the decline phases. Threshold cutoffs were clinically determined to observe if the load carriage indicators (VO2, VCO2, VE, and RER) were associated with load carriage fail time. Those who reached the incline, decline, and flat thresholds in the first 60 minutes were more likely to fail the two hour time endpoint. The trajectory of the data was relatively stable throughout and did not exponentially increase as was hypothesized during the second hour. While there was some variation, it appeared that the metabolic measures at which participants started each test did not vary tremendously over time, suggesting that if participants started around the threshold cutoffs, they were more likely to fatigue quicker. CONCLUSION: Overall, these findings suggest that the measured variables do not increase over ruck marches lasting two hours in duration. Initial metabolic values may be indicative of how long an individual may be able to exercise beyond 60 minutes until fatigue. This information can help military commanders identify soldiers at high risk of fatigue and monitor their load, pace, and fueling strategies to limit loss of manpower and injury.

Energy Cost of Heavy Load Carriage and Prolonged Walking in ROTC Collegiate Participants

Energy Cost of Heavy Load Carriage and Prolonged Walking in ROTC Collegiate Participants PDF Author: Sara Krajewski
Publisher:
ISBN:
Category : Exercise
Languages : en
Pages : 76

Book Description
The load military service members carry while marching has increased throughout history, and the military routinely uses rucksacks that range in weight from 22-68 kilograms, depending on the type of mission and weather conditions (Van Dijk, 2009). Previous studies have examined the energy cost of load carriage under relatively short time frames, such as 30-45 minutes, but typical marching time greatly exceeds these limits during military operations. Few studies have examined marching times upwards of two hours with a fixed load during flat, incline, and decline conditions with trained military personnel. PURPOSE: The purpose of this study was to measure the energy cost of prolonged marching under heavy load. METHODS: Eleven members of East Carolina University's ROTC completed four days of testing, including a control day when they walked without load and three load carriage days that were randomized to a flat stage, -4% decline, and 5% incline. Load mass was 30 kg, and subjects attempted to walk for two hours under each treatment condition. Metabolic data was collected during the last five minutes of every twenty minute stage. RESULTS: Of the nine participants who completed four days of testing, only two were physically able to complete all of the two hour marches. In statistical analysis, Kaplan-Meier survival curves were used to measure load carriage fail time between groups (those who finished and those who did not) and by testing condition. Significance was found for VO2 between groups of those who completed versus those who did not complete the two hour tests at p=0.0098. VCO2 was found to be significant between groups at p=0.0084. Significance by test was found to be significant for VO2 during the flat phase. VE and RER were not significant. Based on thresholds, the incline proved to be the most physically challenging test, followed by the flat then the decline phases. Threshold cutoffs were clinically determined to observe if the load carriage indicators (VO2, VCO2, VE, and RER) were associated with load carriage fail time. Those who reached the incline, decline, and flat thresholds in the first 60 minutes were more likely to fail the two hour time endpoint. The trajectory of the data was relatively stable throughout and did not exponentially increase as was hypothesized during the second hour. While there was some variation, it appeared that the metabolic measures at which participants started each test did not vary tremendously over time, suggesting that if participants started around the threshold cutoffs, they were more likely to fatigue quicker. CONCLUSION: Overall, these findings suggest that the measured variables do not increase over ruck marches lasting two hours in duration. Initial metabolic values may be indicative of how long an individual may be able to exercise beyond 60 minutes until fatigue. This information can help military commanders identify soldiers at high risk of fatigue and monitor their load, pace, and fueling strategies to limit loss of manpower and injury.

The Corrective Action Handbook, Second Edition

The Corrective Action Handbook, Second Edition PDF Author: Denise E. Robitaille
Publisher: Paton Professional
ISBN: 0965044572
Category : Business & Economics
Languages : en
Pages : 81

Book Description
If the term "mangement review" conjures up visions of a wasteful and burdensome ordeal, The Management Review Handbook is just what you need to add value to your review process. The Management Review Handbook provides managers with a simple explanation of how to effectively document, implement, and maintain a management review process.Denise Robitaille's book is an excellent guide to management review for anyone involved in the process. The book's precepts hold true for any size company across a wide spectrum of industries and organizations. The tools found in the handbook can be used by top management, ISO 9001 coordinators, production supervisors, customer service managers, quality technicians, or anyone else involved in the management review process.Plus, the book includes sample forms that aid in the management review process. The forms may be photocopied. They include:* Management review agenda* Data analysis planning worksheet* Action item checklist* Customer contact form

Unbroken

Unbroken PDF Author: Laura Hillenbrand
Publisher: Random House Trade Paperbacks
ISBN: 0812974492
Category : Biography & Autobiography
Languages : en
Pages : 530

Book Description
#1 NEW YORK TIMES BESTSELLER • NOW A MAJOR MOTION PICTURE • Look for special features inside. Join the Random House Reader’s Circle for author chats and more. In boyhood, Louis Zamperini was an incorrigible delinquent. As a teenager, he channeled his defiance into running, discovering a prodigious talent that had carried him to the Berlin Olympics. But when World War II began, the athlete became an airman, embarking on a journey that led to a doomed flight on a May afternoon in 1943. When his Army Air Forces bomber crashed into the Pacific Ocean, against all odds, Zamperini survived, adrift on a foundering life raft. Ahead of Zamperini lay thousands of miles of open ocean, leaping sharks, thirst and starvation, enemy aircraft, and, beyond, a trial even greater. Driven to the limits of endurance, Zamperini would answer desperation with ingenuity; suffering with hope, resolve, and humor; brutality with rebellion. His fate, whether triumph or tragedy, would be suspended on the fraying wire of his will. Appearing in paperback for the first time—with twenty arresting new photos and an extensive Q&A with the author—Unbroken is an unforgettable testament to the resilience of the human mind, body, and spirit, brought vividly to life by Seabiscuit author Laura Hillenbrand. Hailed as the top nonfiction book of the year by Time magazine • Winner of the Los Angeles Times Book Prize for biography and the Indies Choice Adult Nonfiction Book of the Year award “Extraordinarily moving . . . a powerfully drawn survival epic.”—The Wall Street Journal “[A] one-in-a-billion story . . . designed to wrench from self-respecting critics all the blurby adjectives we normally try to avoid: It is amazing, unforgettable, gripping, harrowing, chilling, and inspiring.”—New York “Staggering . . . mesmerizing . . . Hillenbrand’s writing is so ferociously cinematic, the events she describes so incredible, you don’t dare take your eyes off the page.”—People “A meticulous, soaring and beautifully written account of an extraordinary life.”—The Washington Post “Ambitious and powerful . . . a startling narrative and an inspirational book.”—The New York Times Book Review “Magnificent . . . incredible . . . [Hillenbrand] has crafted another masterful blend of sports, history and overcoming terrific odds; this is biography taken to the nth degree, a chronicle of a remarkable life lived through extraordinary times.”—The Dallas Morning News “An astonishing testament to the superhuman power of tenacity.”—Entertainment Weekly “A tale of triumph and redemption . . . astonishingly detailed.”—O: The Oprah Magazine “[A] masterfully told true story . . . nothing less than a marvel.”—Washingtonian “[Hillenbrand tells this] story with cool elegance but at a thrilling sprinter’s pace.”—Time “Hillenbrand [is] one of our best writers of narrative history. You don’t have to be a sports fan or a war-history buff to devour this book—you just have to love great storytelling.”—Rebecca Skloot, author of The Immortal Life of Henrietta Lacks

Biomechanics in Ergonomics

Biomechanics in Ergonomics PDF Author: Shrawan Kumar
Publisher: CRC Press
ISBN: 0849379091
Category : Medical
Languages : en
Pages : 744

Book Description
Safety or comfort? Can you truly have one without the other? Is it feasible to have both? Although by no means the only factor, a deep understanding of biomechanics plays a leading role in the design of work and workplaces that are both pain and injury free. Standing firmly on the foundation built by the previous edition, the second edition of Biom

Designing Resistance Training Programs

Designing Resistance Training Programs PDF Author: Steven J. Fleck
Publisher: Human Kinetics
ISBN: 1492584312
Category : Sports & Recreation
Languages : en
Pages : 520

Book Description
Designing Resistance Training Programs, Fourth Edition, is a guide to developing individualized training programs for both serious athletes and fitness enthusiasts. In this updated and expanded fourth edition, two of the world’s leading experts on strength training explore how to design scientifically based resistance training programs, modify and adapt programs to meet the needs of special populations, and apply the elements of program design in the real world. Fleck and Kraemer provide readers with a thorough understanding of the process of designing resistance training programs from both scientific and practical perspectives. As with previous editions, the fourth edition includes comprehensive tables that compare data and conclusions from research on core topics related to design of resistance training programs. By summarizing research and content for the reader, these tables offer a study guide, on-the-job reference, or starting point for further research. Designing Resistance Training Programs, Fourth Edition, is the only resource available that presents the body of research in the field in this organized and comprehensive format. The fourth edition has been thoroughly revised to present the most current information while retaining the studies that are the basis for concepts, guidelines, and applications in resistance training. Meticulously updated and heavily referenced, the fourth edition contains the following updates: • A full-color interior provides stronger visual appeal for the text. • Sidebars focus on a specific practical question or an applied research concept, allowing readers to connect research to real-life situations. • Multiple detailed tables summarize research from the text, offering an easy way to compare data and conclusions. • A glossary makes it simple to find key terms in one convenient location. • Newly added instructor ancillaries make the fourth edition a true learning resource for the classroom. Designing Resistance Training Programs, Fourth Edition, begins by outlining the principles of resistance training and exercise prescription, and examines the various types of strength training, including isometrics and eccentric training. This is followed by a discussion of resistance training from a physiological perspective and an overview of how resistance training programs interact with the other conditioning components such as aerobic, interval, plyometric, and flexibility training. Readers will then explore advanced training techniques, how to manipulate training variables in a long-term resistance training program, and ways to plan rest into long-term training that minimizes losses in fitness or performance gains. An important text for students, researchers, and practitioners, this textbook offers the information and tools to help readers evaluate resistance training programs and better understand the context and efficacy of new data findings in this ever-changing field. Designing Resistance Training Programs, Fourth Edition, is an essential resource for understanding the science behind resistance training and designing evidence-based resistance training programs for any population. This text provides the tools for understanding and designing resistance training programs for almost any situation or need.

Warfighting

Warfighting PDF Author: Department of the Navy
Publisher: Vigeo Press
ISBN: 9781948648394
Category :
Languages : en
Pages : 84

Book Description
The manual describes the general strategy for the U.S. Marines but it is beneficial for not only every Marine to read but concepts on leadership can be gathered to lead a business to a family. If you want to see what make Marines so effective this book is a good place to start.

ACSM's Foundations of Strength Training and Conditioning

ACSM's Foundations of Strength Training and Conditioning PDF Author: Nicholas Ratamess
Publisher: Lippincott Williams & Wilkins
ISBN: 1975149920
Category : Medical
Languages : en
Pages : 1524

Book Description
Developed by the American College of Sports Medicine (ACSM), ACSM’s Foundations of Strength Training and Conditioningoffers a comprehensive introduction to the basics of strength training and conditioning. This updated 2nd edition focuses on practical applications, empowering students and practitioners to develop, implement, and assess the results of training programs that are designed to optimize strength, power, and athletic performance. Clear, straightforward writing helps students master new concepts with ease, and engaging learning features throughout the text provide the understanding and confidence to apply lessons to clinical practice.

Redesigning America’s Community Colleges

Redesigning America’s Community Colleges PDF Author: Thomas R. Bailey
Publisher: Harvard University Press
ISBN: 0674368282
Category : Education
Languages : en
Pages : 301

Book Description
In the United States, 1,200 community colleges enroll over ten million students each year—nearly half of the nation’s undergraduates. Yet fewer than 40 percent of entrants complete an undergraduate degree within six years. This fact has put pressure on community colleges to improve academic outcomes for their students. Redesigning America’s Community Colleges is a concise, evidence-based guide for educational leaders whose institutions typically receive short shrift in academic and policy discussions. It makes a compelling case that two-year colleges can substantially increase their rates of student success, if they are willing to rethink the ways in which they organize programs of study, support services, and instruction. Community colleges were originally designed to expand college enrollments at low cost, not to maximize completion of high-quality programs of study. The result was a cafeteria-style model in which students pick courses from a bewildering array of choices, with little guidance. The authors urge administrators and faculty to reject this traditional model in favor of “guided pathways”—clearer, more educationally coherent programs of study that simplify students’ choices without limiting their options and that enable them to complete credentials and advance to further education and the labor market more quickly and at less cost. Distilling a wealth of data amassed from the Community College Research Center (Teachers College, Columbia University), Redesigning America’s Community Colleges offers a fundamental redesign of the way two-year colleges operate, stressing the integration of services and instruction into more clearly structured programs of study that support every student’s goals.

College Life in the Old South

College Life in the Old South PDF Author: E. Merton Coulter
Publisher: University of Georgia Press
ISBN: 0820331996
Category : Education
Languages : en
Pages : 342

Book Description
Relates the early history of the University of Georgia from its founding in 1785 through the Reconstruction era. In this history of America's first chartered state university, the author recounts, among other things, how Athens was chosen as the university's location; how the state tried to close the university and refused to give it a fixed allowance until long after the Civil War; the early rules and how students invariably broke them; the days when the Phi Kappa and Demosthenian literary societies ruled the campus; and the vast commencement crowds that overwhelmed Athens to feast on oratory and watermelons.

Optimizing Strength Training

Optimizing Strength Training PDF Author: William J. Kraemer
Publisher: Human Kinetics
ISBN: 9780736060684
Category : Health & Fitness
Languages : en
Pages : 262

Book Description
Periodization of resistance training -- Training principles -- Acute program variables -- Practical considerations -- Workout design -- Assessment -- Training tips and tools -- Case studies.