A Comparison of Bilateral and Unilateral Back-squat Strength as Predictors of Athletic Performance in Field Tests of Speed, Power and Agility PDF Download
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Author: Mathew Herold
Publisher:
ISBN:
Category : Back exercises
Languages : en
Pages : 142
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Book Description
Author: Mathew Herold
Publisher:
ISBN:
Category : Back exercises
Languages : en
Pages : 142
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Author: Bashir A. Ismail
Publisher:
ISBN:
Category :
Languages : en
Pages : 99
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Book Description
ABSTRACT: The purpose of the study was to investigate the relationship between unilateral (UNI) and bilateral (BIL) squat strength and field-based performance tests of sprint speed and change of direction speed (CODS) in Division III team sport athletes. Data was collected from 28 healthy male athletes (19.61 ± 1.07 year, 179.42 ± 4.85 cm, 79.91 ± 10.35 kg). Athletes represented team sports such as football, lacrosse, soccer and baseball. Subjects completed the Pro-agility, 30 m sprint test and 3 RM strength tests unilaterally with the rear foot elevated split squat (RFESS)and bilaterally with front squat, whereby load lifted was used to calculate relative strength ratio. No significant correlation was found between RFESS strength, and CODS or 30m sprint (r = -.255, p > .05, r = -.276, respectively). No significant correlation was found between BIL strength, and CODS or 30 m sprint (r = -.296, p >.05, r = -.349, respectively), although BIL strength produced a moderate to large effective size with the 30 m sprint (r2 = .121). Despite no significant relationships between lower-body strength and field-based performance measures exists, strength and conditioning practitioners should not be discouraged from implementing UNI training with their athletes. The lack of strong relationship between neither BIL or UNI strength and field-based performance measures indicates that neither method is more effective to develop foundations for speed and CODS.
Author: Dylan Michael Mudlo
Publisher:
ISBN:
Category : Muscle strength
Languages : en
Pages : 61
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Book Description
Author: Christopher Carling
Publisher: Routledge
ISBN: 1134091109
Category : Sports & Recreation
Languages : en
Pages : 274
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Book Description
What are the most effective tools, techniques and technologies available to coaches and sport scientists in the assessment of player and team performance? This is the first book dedicated to the assessment of performance in field sports such as soccer, rugby, hockey and lacrosse. It provides detailed and clear information about the laboratory and field-based methods that can be used to evaluate improvements in individual and team performance, from basic physiological assessment to the use of video and information technologies. Standing at the interface between sport sciences and sport coaching, the book examines a wide range of performance criteria, including: physiology strength, conditioning and fitness decision-making coordination and motor skills sport specific skills team play. Integrating cutting-edge theory, research and technology with best practice in applied sport science, this book is important reading for all students of sport sciences, kinesiology, human movement science, sports performance, or sports coaching. Christopher Carling is Head of Sports Science at Lille Football Club. Thomas Reilly is Director of the Research Institute for Sport and Exercise Sciences at Liverpool John Moores University. He is President of the World Commission of Science and Sports. A. Mark Williams is Professor of Motor Behaviour at the Research Institute for Sport and Exercise Sciences, Liverpool John Moores University.
Author: Frances Stephenson
Publisher:
ISBN:
Category :
Languages : en
Pages : 58
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Book Description
The purpose of this investigation was to analyze the correlation between bilateral versus unilateral strength on jump and sprint performance in college athletes. Thirteen male, college soccer athletes were asked to perform a bilateral and unilateral 5RM squat test, a bilateral and unilateral vertical and long jump test, and a 40 yard sprint test. The data was then analyzed to determine the correlations between strength and jump and sprint performance. No significant correlations were found between bilateral strength and bilateral jump and sprint performance. Nor were any significant correlations found between unilateral strength and unilateral jump or sprint performance. When the ratio of bilateral to unilateral strength was tested against the ratio of bilateral to unilateral jump performance, no significant correlations were found. Contrary to our hypothesis, a greater level of unilateral strength did not correlate with greater unilateral performance. Future research should investigate the correlation between bilateral and unilateral strength to sprint and jump performance in athletes of various levels of play as well as a variety of sports to determine if these results are universal or specific to athletes tested in this study.
Author: Hui Ying Luk
Publisher:
ISBN:
Category : Jumping
Languages : en
Pages : 268
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Book Description
Abstract: The study was designed to compare the bilateral deficit and muscle strength imbalance in bilateral (power-lifting) and unilateral (jumping) predominant contraction sports. Nineteen male subjects were included in the study. Two independent t-tests were used to compare the bilateral deficit and muscle strength imbalance between two groups. Fifteen 2 x 2 mixed factorial ANOVAs were used to examine the effect of two independent group witli two repeated measures factors (jump for dominant and non-dominant leg: 2 leg jump, single leg jump) and (dominance: dominant (D), non-dominant (ND)) with regards to five dependent variables: force, velocity, power, rate of force development, and height. Based on the analysis, the bilateral group had a lower limb symmetry index (p .05) than unilateral group; however, no difference (p .05) was observed in the bilateral deficit. Single leg jump has shown a (p
Author: Olivia H. Indorf
Publisher:
ISBN:
Category :
Languages : en
Pages : 79
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Book Description
ABSTRACT: The bilateral squat is traditionally chosen as a main lower body exercise in strength and conditioning programs, with unilateral lower body exercises being used as assistance exercises that generally receive less emphasis (McCurdy et al., 2005). Most sport skills, however, such as running, jumping, bounding, and changing direction, are performed unilaterally (Speirs et al., 2016). The purpose of the current study was to determine the relationship between unilateral and bilateral lower body strength and power. Twenty-two NCAA division III football players between the ages of 18-23 participated in the current study. Pearson product moment correlations were conducted to assess the relationship between front squat 1RM and peak power, split squat 1RM and peak power, and front squat 1RM and split squat 1RM. Significant positive linear relationships were found between peak power and front squat 1RM (r = .516, p = .014), peak power and split squat 1RM (r = .451, p = .035) and front squat 1RM and split squat 1RM (r = .778, p
Author: Steven J. Fleck
Publisher: Human Kinetics
ISBN: 1492584312
Category : Sports & Recreation
Languages : en
Pages : 520
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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.
Author: Andrew K. Papirio
Publisher:
ISBN:
Category :
Languages : en
Pages : 82
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Book Description
ABSTRACT: The bilateral deficit (BD) is a well-established phenomenon describing the difference in force capabilities between bilateral and unilateral movements. The majority of research has used seated machine-based protocols to measure the BD and deduce training implications. However, these are uncommon in modern strength training practices and do not reflect the movement patterns found in sport. The purpose of this study was to use a ground-based multi-joint exercise to determine if a BD was present in trained athletes. Forty trained NCAA Division III football players (20.9 + 0.8 years, 209.7 + 30.1 lb., 71.2 + 2.2 in) completed a bilateral and unilateral 1RM deadlift. Participants were divided into two groups to ensure that fatigue and the order of the 1RM tests did not have any effect. Group A (n = 17) completed the bilateral 1RM deadlift first, Group B (n = 23) completed the unilateral 1RM deadlift first. The remaining test was performed 48-72 hours later to provide adequate rest. Unilateral 1RM values were multiplied by two and compared to the participants’ bilateral 1RM. A significant bilateral deficit was present in both groups (M = 102.5). Participants were significantly stronger on one leg, relatively. Despite perceptions about bilateral facilitation, experienced athletes with a balanced training history appear to experience a BD and possess the capacity to be stronger on one leg. These findings suggest that trained athletes may benefit from unilateral training for the development of strength.
Author: National Strength & Conditioning Association
Publisher: Human Kinetics
ISBN: 0736095268
Category : Sports & Recreation
Languages : en
Pages : 264
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Book Description
Authored by the National Strength and Conditioning Association, Developing Power is the definitive resource for developing athletic power. With exercises and drills, assessments, analysis, and programming, this book will elevate power and performance in all sports.
