Download or read book A Study of the Relationship Between Selected Anthropometric and Strength Measurements and Bat Swing Velocity of Female High School Softball Players written by Patricia Ann Shewokis and published by . This book was released on 1984 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Completed Research in Health Physical Education Recreation Dance written by American Alliance for Health, Physical Education, Recreation and Dance (AAHPERD). and published by . This book was released on 1987 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation lists research completed in the areas of health, physical education, recreation, dance, and allied areas during 1985. In the first section references are arranged under the subject area headings in alphabetical order. Master's and doctor's theses from institutions offering graduate programs in health, physical education, recreation, dance, and allied are then presented. Institutions reporting are listed at the end of the volume. Most references are accompanied by abstracts of the research, and all are numbered in alphabetical order according to institution. Names of institutional representatives sending in abstracts are indicated in parentheses after each reference. A bibliography lists published research citing articles published in periodicals reviewed for this booklet. (JD)
Download or read book The Relationship Between Bat Velocity Upper and Lower Extremity Power and the Rotational Kinetic Chain in NCAA Division II Softball Players written by Liza S. Teichler and published by . This book was released on 2010 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Comparison of Hitting Mechanics in Softball written by Victoria M. Jensen and published by . This book was released on 2016 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: To score points to win games, a softball team must be able to hit the ball with as the largest velocity as possible. In softball, there are two well-known hitting models, rotational and linear, yet little quantitative research has been done to determine which model produces the greatest ball velocity and if certain key inputs, such as weight shift and bat velocity, of the models contribute to that velocity. To determine these components, a high-speed EXLIM camera recorded the change in ball position to calculate the its exit velocity, a 70g accelerometer measured centripetal acceleration of the bat to determine bat velocity, while two force plates measured the transfer of weight as nine softball players swung a bat twenty times- ten times with a ball on the tee and ten times with a ball off of the tee. Although it was found that the two hitting models had statistically different weight shifts with 95% confidence, the average ball velocity for a linear model, 22.0 m/s ±1.9 m/s, was not different from the average ball velocity for a rotational model, 22.0 m/s ± 0.7 m/s, at 95% confidence. Since these values are not different with statistical significance, this research concludes that players that weight shift does not effect ball velocity and that players are encouraged to use whichever model feels most comfortable to them.
Download or read book A Study of the Relationship Between Personality and Position Selection for Female Collegiate Softball Players written by Joanne M. Leight and published by . This book was released on 1991 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relationship of Upper and Lower Extremity Power and Bat Speed in Female Intercollegiate Fast Pitch Softball Players written by Kim M. Zarling and published by . This book was released on 1995 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Utility of Novel Rotational Load velocity Profiling Methods in Collegiate Softball Players written by Chad H. Herring and published by . This book was released on 2021 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purposes of this study were to determine the reliability of the bat swing (BS) and rotational medicine ball throw (RMBT) load-velocity profiling (LVP) methods and the relationships between LVP variables and batting performance in NCAA Division I softball players. Current NCAA Division I softball athletes participated in this study. Bat velocity was tracked with a swing sensor during the BS method. An inertial measurement unit (IMU) tracked forearm velocity during the BS and RMBT methods. Two-way intraclass correlation coefficients (ICC) were used for relative reliability and coefficient of variation (CV) was used for absolute reliability. For the BS method with the swing sensor, relationships between the multiple- and two-load models and between LVP variables and batting variables were examined using Pearson’s correlation coefficients. During the RMBT method and BS method using the IMU, no LVP variables were reliable (ICC [less than or equal to] 0.7; CV [greater than or equal to] 15%). For the BS method with the swing sensor, all bat loads and V0 had acceptable reliability using peak velocity (PV) and average peak velocity (PV[subscript avg]) (ICC > 0.7; CV
Download or read book The Effects of a Medicine Ball Training Program on Bat Velocity of Prepubescent Softball Players written by Mallory Kobak and published by . This book was released on 2013 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotational movements are considered an important component of hitting mechanics within the game of softball. Strength and conditioning coaches seek to improve the performance of softball players' bat velocity through various weighted implement training modes focusing on rotational movements. PURPOSE: The purpose of this study was to determine if an 8-week rotational medicine ball training protocol would increase bat velocity in a game like situation for prepubescent softball players. It was hypothesized that an 8-week rotational medicine ball training program would result in the greatest increase in bat velocity among prepubescent softball players. METHODS: Twenty-seven female prepubescent softball players (mean age = 10.2 + 1.2) participated in this study. Participants were randomly assigned to a medicine ball training (MB = 13) or control (CON = 14) group. Pre- and Post-testing consisted of warming up with 10 dry swings using the bat they normally use during competition followed by 10 hits off a pitching machine. Pitch speed was 30-40 mph depending on age. During the 8 weeks of training, the MB group completed a series of medicine ball throws that were aimed at developing rotational velocity. Exercises included side medicine ball throw for distance, side medicine ball throw for speed, partner russian twists, woodchoppers and standing side band rotations which were all done on both dominant and non-dominant sides. 8-10 year old participants used a 4-kg medicine ball while 11-13 year olds used a 6-kg medicine ball. 1 set of 12 repetitions was completed 2x/wk. RESULTS: A Repeated Measures ANOVA with a Randomized Cross-Over Design revealed no significant difference between conditions from pre- to post-testing (F=1.9, p=.18) and no significant difference over time in either group (F= .33, p= .57). Pre-test average velocity for CON = 36.1mph (+ 6.6) and MB = 36.8mph (+ 5.4). Post-test average velocity for CON =38.2mph (+ 8.6) and MB = 37.7mph (+ 4.4). CONCLUSION: Medicine ball training offers no additional benefits compared to normal in-season activities in prepubescent softball players. Mean velocity from pre- to post-testing did increase in both conditions, but not significantly. However, a more rigorous training program may prove to be more beneficial.
Download or read book The Relationship Between Certain Anthropometric Measurements and Certain Tests of Strength and Motor Ability Among College Women written by Emily M. Haymes and published by . This book was released on 1962 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An investigation of the relationship between strength as developed through a weight training program and the speed of a softball throw written by John Baker Cox and published by . This book was released on 1958 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of a Functional Fatigue Protocol on Maximal Softball Hitting written by Emilee M. Bounds and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue can affect athletic performance in many ways, including a decrease in sport specific accuracy, impairments in joint angles, and a decrease in overall muscle performance. In regards to fatigue, little research has been conducted examining the effects of fatigue on baseball and softball performance. The majority of the research stems from examining the effects of fatigue on the overhead throwing motion among collegiate baseball players. Research suggested that as a result of a functional fatigue protocol, baseball pitchers experienced impairments in joint angles in the overhead throwing motion. Among this same population, throwing velocities decreased significantly from the first to last inning pitched, resulting in a great deal of in-game fatigue. Researchers attested that such changes in angles and velocities as a result of fatigue, would negatively affect performance. The purpose of this study was to examine the effects of a functional fatigue protocol on softball hitting form. Additional research, examined the effects of fatigue on performance among skilled tennis athletes. A functional fatigue protocol was implemented, which directly simulated tennis matchplay. Results revealed decreases in tennis hitting accuracy, and just as with the baseball players, fatigue resulted in a decrease in performance. A secondary objective was to identify the relationship between hitting variables, muscular power, and body composition. Participants (n = 6) were NCAA Division II softball players with a mean age of 19.5 ± 1.4 years who completed a functional fatigue protocol (FFP). The FFP was filmed using a digital video camera, and results were analyzed using Dartfish motion analysis software. To address the secondary objectives, participants completed the Wingate Anaerobic Power test to assess muscular power and a dual-energy x-ray absorptiometry (DXA) scan to discover body composition values. To detect differences in swing angles pre- and post-fatigue, an ANOVA was conducted revealing significant (p .05) decreases in linear bat-end velocity (LBEV; F = 12.479, p = .017) and batted-ball velocity (BBV; F = 11.856, p = .018) as a result of fatigue. A Pearson's product moment correlation coefficient performed to examine relationships between hitting variables, muscular power, and body composition. Results revealed no significant relationships (p .05) between muscular power and LBEV or BBV, in addition to no significant relationships between percent fatigue as measured by WAnT or the FFP. Meaningful relationships were discovered between peak power and LBEV and BBV. A strong, negative correlation was present between peak power and BBV (r = -.73, p = .097) and a moderate, negative correlation between peak power and LBEV ( r = -.68, p = .138). Additionally, percent body fat was negatively related to percent fatigue in LBEV(r = -.76, p = .082). Results indicated that fatigue did in fact have a negative effect on softball hitting form, with significant decreases in LBEV and BBV, and that peak power and hitting velocities were inversely related. Although no differences were found in swing angles at ball contact, changes in LBEV and BBV could be detrimental to swing timing and performance. Results of this study will be utilized to further understand the effects of fatigue on softball hitting form and the role of muscular power and body composition on hitting performance.
Download or read book Relationship Between Body Mass Index and Batting Performance of Collegiate Softball Players written by Nicole Elizabeth Stratton and published by . This book was released on 2002 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relationship Between Age and Anthropometric Measurements with Physical Fitness Performance Scores of Female High School Students written by Anna Marie Williams and published by . This book was released on 1981 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relationship Between Various Structural Components and Selected Arm Strength Measures of High School Girls written by Catharine Isenberg Work and published by . This book was released on 1968 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Three Exercise Programs on Selected Anthropometric Measurements of High School Girls written by Betty Jane Chitwood and published by . This book was released on 1972 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics of Baseball Softball written by Rod Cross and published by Springer Science & Business Media. This book was released on 2011-02-22 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the physics of baseball and softball, assuming that the reader has a basic background in both physics and mathematics. The physics will be explained in a conversational style, with words and illustrations, so that the explanations make sense. The book provides an excellent opportunity to explain physics at a relatively simple level, even though the primary objective is to explain the many subtle features concerning the physics of baseball. For those readers who already know quite a bit of physics and who will be comfortable with mathematical equations, additional material of this nature will be provided in appendices. The latest research findings and statistical data have been incorporated by the author. The book also contains many simple experiments that the reader can perform to convince themselves that the effects described do indeed exist.
Download or read book The Physics of Baseball written by Robert K. Adair and published by HarperCollins. This book was released on 2015-01-20 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Blending scientific fact and sports trivia, Robert Adair examines what a baseball or player in motion does-and why. How fast can a batted ball go? What effect do stitch patterns have on wind resistance? How far does a curve ball break? Who reaches first base faster after a bunt, a right- or left-handed batter? The answers are often surprising—and always illuminating. This newly revised third edition considers recent developments in the science of sport such as the neurophysiology of batting, bat vibration, and the character of the "sweet spot." Faster pitchers, longer hitters, and enclosed stadiums also get a good, hard scientific look to determine their effects on the game. Filled with anecdotes about famous players and incidents, The Physics of Baseball provides fans with fascinating insights into America's favorite pastime.
