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Dissertations / Theses on the topic 'Height of jump'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Griggs, Cameron V. "Relationship Between Lower Body Strength, Countermovement Jump Height, and Optimal Drop Jump Drop Height." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etd/3098.

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The purpose of this study was to understand the relationship between back squat one-repetition maximum relative to body mass (1RMrel), countermovement jump height (CMJH), and optimal drop height in drop jump (DHopt). Fifteen male participants with various sport backgrounds and training experience completed a one repetition maximum (1RM) back squat, maximum countermovement jump (CMJ), and drop jumps (DJ) from incrementally increasing drop heights to determine which drop height elicited the greatest jump height. The DHopt testing protocol was unique in that smaller increments were used to determ

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2

Kerns, R. C. "The Relationship of Anthropometric Measures to Vertical Jump Height." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/honors/60.

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The capability to perform your best is an important aspect in the sport of soccer. The relationship between anthropometric measures to vertical jump height among NCAA Division I Women’s soccer players is a subject lacking sufficient scientific research. Purpose: To analyze this relationship, body mass and %body fat was correlated with un-weighted countermovement jump height to determine the strength of this relationship in NCAA DI female soccer players. Methods: Data from an ongoing athlete monitoring program from fourteen NCAA D1 female soccer players in the year 2007 was analyzed. Air

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Beckham, George, Timothy J. Suchomel, C. J. Cole, S. B. Kim, and Michael H. Stone. "Influence of Sex, Relative Maximal Strength and Unloaded Vertical Jump Height on the Countermovement Vertical Jump." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/6298.

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4

Kraska, Jenna M., Ann M. Kinser, C. Whitted, et al. "Relationship Between Isometric Force Characteristics and the Difference in Jump Height in Weighted and Un-weighted Jumps." Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etsu-works/4104.

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5

Waggener, Wesley R. "The effects of the Skyflex on vertical jump height and speed." Virtual Press, 1997. http://liblink.bsu.edu/uhtbin/catkey/1041904.

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The purpose of the study was to determine the affect of SkyFlex training would have on jumping ability. The SkyFlex is a shoe constructed with a forefoot platform elevating the heel. The design purports enhancement of the stretch reflex in the Gastrocnemius and Soleus muscles. The SkyFlex includes an Airlon Flexfit sock liner designed to keep the ankle warm during training, minimizing tightness and flexibility reductions. Division I varsity male volleyball players (n= 17) were tested for the following: standing vertical jump, approach jump, court sprint, shuttle run, and anthropometry. Two-way

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Kraska, Jenna M., Michael W. Ramsey, G. Gregory Haff, et al. "Relationship between Strength Characteristics and Unweighted and Weighted Vertical Jump Height." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etsu-works/4129.

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Purpose: To investigate the relationship between maximum strength and differences in jump height during weighted and unweighted (body weight) static (SJ) and countermovement jumps (CMJ). Methods: Sixty-three collegiate athletes (mean ± SD; age= 19.9 ± 1.3 y; body mass = 72.9 ± 19.6 kg; height = 172.8 ± 7.7 cm) performed two trials of the SJ and CMJ with 0 kg and 20 kg on a force plate; and two trials of mid-thigh isometric clean pulls in a custom rack over a force plate (1000-Hz sampling). Jump height (JH) was calculated from fight time. Force-time curve analyses determined the following:

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7

Hellström, Johannes. "Changes in Loaded Squat Jump performance following a series of isometric conditioning contraction." Thesis, Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-2932.

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Aim: The aim of this study was to investigate the effects of performing an isometric conditioning contraction (CC) consisting of two sets of five seconds maximal voluntary contraction in physically active individuals prior to three sets of Loaded Squat Jumps (LSJ). Method: 5 males and 4 females (mean ± SD: age 25 ± 2 years, height 175 ± 10 cm, body mass 70 ± 15 kg) were assessed on their power output, force production, jump height and velocity on three sets of LSJ on two separate sessions. Each participant attended two sessions in randomized order: a control session (CON) and an experimental s

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8

Larsson, Emma. "A correlation study between vertical jump height and sprint in young female teamgymnasts." Thesis, Högskolan i Halmstad, Hälsa och idrott, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-31151.

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Background: Teamgym is a relatively new and emerging sport that originating comes from Scandinavia. Teamgym differs a lot from the most known form of gymnastics, artistic gymnastic. For example artistic gymnastics is an individual sport, while teamgym is performed by 6-12 members in each team. In general gymnasts have to acquire many skills at a very young age like jumping, bouncing and twisting in different directions. A good jumping ability has been linked to a successful performance for gymnasts and is defined by a gymnast’s capacity to jump upwards and then perform series of forward and ba

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9

Bazyler, Caleb D., Jacob R. Goodin, Tara K. Whiton, Satoshi Mizuguchi, and Michael H. Stone. "The Contribution of Muscle Cross-Sectional Area to Jump Height in Collegiate Athletes." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/3832.

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PURPOSE: To determine the relative contribution of vastus lateralis (VL) and lateral gastrocnemius (LG) cross-sectional area (CSA) to countermovement jump height (JH) in collegiate athletes. METHODS: Sixty-nine male (n=33, 20.43 ± 1.68 y, 180.34 ± 11.39 cm, 77.54 ± 14.45 kg) and female (n=36, 19.79 ± 1.09 y, 168.46 ± 10.07 cm, 67.33 ± 9.48 kg) collegiate athletes competing in basketball, tennis, cross-country, weightlifting, and volleyball were recruited for the study. Testing was conducted as part of an on-going athlete monitoring program. Athletes were tested on measures of VL and LG CSA usi

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10

Sandberg, John B. "Acute Effects of Antagonist Stretching on Jump Height and Knee Extension Peak Torque." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1156.

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A great deal of research has shown decrements in force and power following static stretching. There has been little research investigating the acute effects of static stretching of the antagonist on the expression of strength and power. The purpose of this study was to investigate the effects of static stretching of the antagonist muscles on a variety of strength and power measures. Sixteen active males were tested for vertical jump height and isokinetic torque production in a slow knee extension (KES) at 60°/s and a fast knee extension (KEF) at 300°/s. Electromyography was taken during knee e

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11

Sams, Matt L., Kimitake Sato, Brad H. DeWeese, Adam L. Sayers, and Michael H. Stone. "Quantifying Changes in Squat Jump Height Across a Season of Men's Collegiate Soccer." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/4650.

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The purposes of this study were to examine the effectiveness of an athlete monitoring program in managing athlete neuromuscular fatigue across a men's collegiate soccer season as measured by changes in squat jump (SJ) height and to compare possible changes with the session rating of perceived exertion (sRPE) training load (TL). Eighteen outfield Division I men's college soccer players performed SJ testing before each game of the fall season in addition to a baseline measurement at the start of preseason. The athletes provided sRPE values after all training sessions, weight-training, and games.

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12

Kraska, Jenna Marie. "The Relationship between Isometric Force Characteristics and Vertical Jump Height under Various Loading Conditions." Digital Commons @ East Tennessee State University, 2008. https://dc.etsu.edu/etd/1965.

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Purpose: to examine the relationship between isometric force characteristics (IF) and vertical jump height under various loading conditions. Sixty-three collegiate athletes participated in this investigation. Athletes performed static jump (SJ) and countermovement jumps (CMJ) with 0 and 20kg, and isometric mid-thigh pulls on a force plate. Force-time curve analysis was conducted for each isometric pull and jump to determine force related characteristics. Jump height (JH) was derived from flight time. Isometric forces were normalized using allometric scaling: absolute force/ (body mass(kg)0.67)

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13

Ramsey, Michael W., Ashley A. Kavanaugh, Michael Israetel, Anna Swisher, Cara Nelson, and Michael H. Stone. "Changes in Relationship Between Static Jump Height, Strength Characteristics, and Body Composition With Training." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/4085.

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14

Svensson, Hannah. "A correlation study between 10 and 15 meter sprint and vertical jump height in young female teamgymnasts." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-31004.

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Background: Teamgym is originally from Scandinavia and the first competition was held in Finland in 1996. The sport includes parts such as trampette, tumbling and floor programs which is performed by the whole team which often consists of six to twelve gymnasts. Trampette and tumbling program consists of three series of tumbles and vaults performed by six gymnasts of the team. The floor program is three minutes long and performed by the team. Female elite gymnasts are often short, lightweight and have a good strength and power and are very flexible and limber. Jumping movements are common in t

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Kraska, Jenna M., Michael W. Ramsey, G. Gregory Haff, et al. "Relationship Between Isometric Force Characteristics and the Difference in Un-weighted and Weighted Vertical Jump Height." Digital Commons @ East Tennessee State University, 2008. https://dc.etsu.edu/etsu-works/4093.

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16

Sjödin, Johanna. "Telefonapplikationen My Jump2 som mätverktyg vid utförandet av unilateralt Drop Jump. : Klinisk funktionell bedömning av triceps surae hos aktiva motionärer." Thesis, Umeå universitet, Avdelningen för idrottsmedicin, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-166190.

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Introduktion: Smartphoneapplikationen My Jump2 har bedömts att ha större tillgänglighet och inte vara beroende av labbutrustning vid vertikala hopptester. I jämförelse med kraftplatta (golden standard) har applikationen visat sig valid och reliabel. My Jump2 har uppvisat mycket bra- perfekt korrelation mot övrig kraftutrustning. Jämförelse mellan My Jump2 och kliniska tester är ännu inte beprövat på detta område. Syfte: Syftet med denna kliniska studie var att analysera samband och korrelationer mellan värden från My Jump2 och kliniska tester gällande funktionell bedömning av

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Aguilar, Alain J. Padua Darin A. "A comparison of a standard warm-up model and a dynamic warm-up model on flexibility, strength, vertical jump height, and vertical jump power." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,89.

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Thesis (M.A.)--University of North Carolina at Chapel Hill, 2006.<br>Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements of the degree of Master of Arts in the Department of Exercise and Sport Science (Athletic Training)." Discipline: Exercise and Sports Science; Department/School: Exercise and Sport Science.

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18

McDonald, Tara. "TESTING VERT™ ACCELEROMETER TO IDENTIFY VALIDITY AND RELIABILITY WHEN COMPARED TO SWITCH MAT." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/honors/475.

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This present study was intended to identify the reliability and validity of the Vert™ device when compared to a Switch mat. Vert is a wireless device intended to measure jump count and jump height through an application on a smartphone or tablet and the Switch mat provides jump height using wireless sensors. Jump height is an important factor in many sports such as volleyball and basketball and it is important to have devices that coaches and trainers can use for testing that they can rely on. If this device is found to be valid and reliable, coaches and trainers could potentially use it in

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19

Sahrom, Sofyan. "Beyond jump height: Understanding the kinematics and kinetics of the countermovement jump from vertical ground reaction force data through the use of higher-order time derivatives." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2019. https://ro.ecu.edu.au/theses/2235.

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The countermovement jump (CMJ) is a complex, multi-joint movement that has been well studied in human research, largely through analysis of the ground reaction force-time signal obtained during jumping. Such analysis has required the definition and then the calculation of several critical kinematic and kinetic variables (including peak force, peak eccentric [braking] force, peak power, rate of propulsive force development, modified reactive strength index) which are used to describe jump performance as well as the jumper’s overall neuromuscular function. The accurate calculation of these varia

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20

Dahlström, Filip. "Jump ability and knee stability in adolescents with different elasticity training." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34017.

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Background: Jump height, utilization of the stretch-shortening cycle (SSC) and knee stability is key qualifications and important factors for athletic performance. This is usually practiced with the help of plyometric training. However, plyometric training is considered as an exercise with high-impact that adds stress on the body. Trampoline training is an activity with a growing number of adolescent’s performers, and with the ability to train the same qualities that plyometric training. However, few studies have investigated trampoline trainings effect on jump height, utilization of the SSC a

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21

Hoopingarner, Jacob Karl. "Relationship of Passive Hip Range of Motion to Countermovement Jump Height and Peak Power Output in Young Adults." Cleveland State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=csu1449051728.

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22

Hornsby, W. Guy, Jeremy A. Gentles, Christopher J. MacDonald, Satoshi Mizuguchi, Michael W. Ramsey, and Michael H. Stone. "Maximum Strength, Rate of Force Development, Jump Height, and Peak Power Alterations in Weightlifters across Five Months of Training." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/4114.

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The purpose of this monitoring study was to investigate how alterations in training affect changes in force-related characteristics and weightlifting performance. Subjects: Seven competitive weightlifters participated in the study. Methods: The weightlifters performed a block style periodized plan across 20 weeks. Force plate data from the isometric mid-thigh pull and static jumps with 0 kg, 11 kg, and 20 kg were collected near the end of each training block (weeks 1, 6, 10, 13, 17, and 20). Weightlifting performance was measured at weeks 0, 7, 11, and 20. Results: Very strong correlations wer

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23

Sole, Christopher J., Satoshi Mizuguchi, Kimitake Sato, Gavin L. Moir, and Michael H. Stone. "Phase Characteristics of the Countermovement Jump Force-Time Curve: A Comparison of Athletes by Jumping Ability." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/4664.

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The purpose of this study was to compare the phase characteristics of the countermovement jump (CMJ) force-time (F-t) curve between athletes based on jumping ability. An initial sample of one-hundred fifty Division-I collegiate athletes were ranked based on CMJ height. Three performance groups were then formed by taking the top, middle, and lower 30 athletes (15 men and 15 women) from the sample. Phases of the CMJ F-t curve were determined and then characterized by their duration, magnitude, area (impulse), and shape (shape factor). A series of 3-way mixed analysis of variance were used to det

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Neves, Taubi J. "A Comparison of the Traditional, Swing, and Chicken Wing Arm Movements on Volleyball Blocking in NCAA Division 1 Female Athletes." Diss., CLICK HERE for online access, 2010. http://contentdm.lib.byu.edu/ETD/image/etd3401.pdf.

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Kavanaugh, Ashley A. "Longitudinal Changes in Strength and Explosive Performance Characteristics in NCAA Division I Women’s Volleyball Athletes." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etd/2315.

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The purpose of this dissertation was to determine if a periodized strength and conditioning program resulted in long-term adaptations in NCAA Division I women’s volleyball athletes, and if these changes related to the team’s competitive performance. Specifically, this dissertation serves to: 1.) describe the changes in body composition and performance variables of 2 female volleyball athletes over a 4-year collegiate career, 2.) determine the degree and magnitude of change in performance variables after about 1, 2, and 3 years of periodized resistance training, and 3.) infer if volleyball perf

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Travis, Spencer K. "Preparing for a National Weightlifting Championship: A Case Series." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etd/3435.

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The purpose of this thesis was to observe psychological, physiological, and performance changes to determine when two high-level weightlifters were peaked for a major competition. We addressed this purpose by conducting a two-part case study series with one USA international level female and one USA national level male weightlifter. Both athletes were considered to be peaked on competition day. The results support our hypothesis that jumping performance would be peaked on competition day corresponding with an increased recovery and decreased stress state. However, contrary to our hypothesis, e

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Burke, Benjamin, Kyle Travis, Henry Lang, Jeremy Gentles, Kimitake Sato, and Caleb Bazyler. "The Effects of Caffeine on Jumping Performance and Maximal Strength in Female Collegiate Athletes." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/honors/530.

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Introduction: Caffeine has long been used to enhance athletic performance. The research regarding caffeine’s effects on strength and power performance is lacking, especially in female athletes. Purpose: To analyze the acute effects of caffeine on jumping performance and maximal strength in female collegiate athletes. Methods: Eight female collegiate athletes performed two testing sessions separated by one week. Using a double-blind approach, athletes randomly received 6 mg/kg of body mass of caffeine (CAF) or a placebo (PLA). Following 60min of quiet sitting and a standardized warm-up, athlete

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Rizzo, Frank. "Does a Tailored Nine-week Training Intervention Improve Jump Height, Single-leg Stability, and Whole-body Stability Performance in Young Cross-country Skiers?" Thesis, Umeå universitet, Avdelningen för idrottsmedicin, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-181172.

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The purpose of this study was to investigate if a nine-week training intervention composed of different mobility and stability exercises intending to improve jump height, whole-body stability, and single-leg stability of junior cross-country skiers. It was also of interest to see if the test equipment could determine the study participants' potential risk of injury with a built-in injury predictor measurement, Musculoskeletal Health (MSK). A total of 16 cross-country skiers aged 16-20 years, 8 man and 8 women, performed the following tests on a force plate; Jump Scan (i.e., to characterize an

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Sole, Christopher J., Timothy J. Suchomel, and Michael H. Stone. "Preliminary Scale of Reference Values for Evaluating Reactive Strength Index-Modified in Male and Female NCAA Division I Athletes." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/6285.

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The purpose of this analysis was to construct a preliminary scale of reference values for reactive strength index-modified (RSImod). Countermovement jump data from 151 National Collegiate Athletic Association (NCAA) Division I collegiate athletes (male n = 76; female n = 75) were analyzed. Using percentiles, scales for both male and female samples were constructed. For further analysis, athletes were separated into four performance groups based on RSImod and comparisons of jump height (JH), and time to takeoff (TTT) were performed. RSImod values ranged from 0.208 to 0.704 and 0.135 to 0.553 in

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Zhang, Kefei. "An evaluation of FFT geoid determination techniques and their application to height determination using GPS in Australia." Curtin University of Technology, School of Surveying and Land Information, 1997. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=11047.

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A new, high resolution, high precision and accuracy gravimetric geoid of Australia has been produced using updated data, theory and computational methodologies. The fast Fourier transform technique is applied to the computation of the geoid and terrain effects. The long, medium and short wavelength components of the geoid are determined from the OSU91A global geopotential model, 2'x2' (residual gravity anomalies in a 3 degrees cap and 1'x1' digital terrain model (DTM), respectively.Satellite altimeter gravity data have been combined with marine gravity data to improve the coverage of the gravi

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Zambo, Zsofia. "Vitamin deficiency, infection and cytokine interactions in pregnant Panamanian women: impact on cortisol-IGF-1-fundal height pathway." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121230.

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In developing countries, multiple micronutrient deficiencies and multiple infections co-occur during pregnancy, and may have adverse consequences on fetal growth outcome. The main objective of this study was to examine the impact of vitamin deficiencies, infection and cytokines on fetal growth. A previous cross-sectional study of pregnant indigenous women (n=184) from the Ngäbe-Buglé Comarca of western Panama provided data on maternal anthropometry, infections (severity of trichomoniasis, dental caries, vaginal candidiasis, bacterial vaginosis; presence of gonococcal, urinary tract, scabies an

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Travis, S. Kyle, Jacob R. Goodin, George K. Beckham, and Caleb D. Bazyler. "Identifying a Test to Monitor Weightlifting Performance in Competitive Male and Female Weightlifters." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/3775.

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Monitoring tests are commonly used to assess weightlifter’s preparedness for competition. Although various monitoring tests have been used, it is not clear which test is the strongest indicator of weightlifting performance. Therefore, the purpose of this study was to (1) determine the relationships between vertical jump, isometric mid-thigh pull (IMTP) and weightlifting performance; and (2) compare vertical jumps to IMTP as monitoring tests of weightlifting performance in a large cohort of male and female weightlifters. Methods: Fifty-two competitive weightlifters (31 males, 21 females) partic

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Israetel, Michael Alexandrovich. "The Interrelationships of Fitness Characteristics in Division 1 Athletes." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etd/1194.

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The purpose of this dissertation was to explore the interrelationships of several important fitness characteristics in Division 1 athletes. Sport performance magnitude is the summation of an individual athlete’s technical, psychological, and fitness characteristics. Athletes who excel in any or all characteristics perform better in their chosen sports. General fitness characteristics that are important to almost all sports include strength, power, vertical jump height, shortdistance sprinting ability, muscularity, and body fat percentage. These variables have been shown in previous research to

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Bazyler, Caleb D., Satoshi Mizuguchi, Christopher J. Sole, et al. "Jumping Performance is Preserved but Not Muscle Thickness in Collegiate Volleyball Players After a Taper." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/3780.

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The purpose of this study was to examine changes in muscle architecture and jumping performance in NCAA division I women's volleyball players throughout a competitive season and in preparation for conference championships. Ten women volleyball players were tested at preseason (T1), pretaper (T2), and post-taper (T3) on measures of vastus lateralis muscle thickness (MT), pennation angle (PA) and fascicle length (FL) using ultrasonography, and unloaded and loaded squat jump height (SJH) and peak power allometrically scaled to body mass (SJPPa) on a force platform. Rating of perceived exertion tr

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Barnes, Robert 1967. "Gonadotrophin-releasing hormone analogue treatment of idiopathic central precocious puberty presenting in girls after age five years : a multi-centre follow-up to final adult height." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32753.

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Idiopathic central precocious puberty may compromise adult height. Gonadotrophin-releasing hormone analogues (GnRHa) suppress puberty and increase final height prediction, but their influence on final height is unclear, especially in girls with pubertal onset just below eight years of age, the traditional limit of normal.<br>At seven children's hospitals, we identified 53 treated and 24 untreated patients (24 and 7 to final height, respectively) whose pubertal onset was between ages 5--8 years. At baseline, bone age advancement and predicted adult height were similar in the two groups. In both

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Bazyler, Caleb D., Satoshi Mizuguchi, Ashley A. Kavanaugh, John J. McMahon, Paul Comfort, and Michael H. Stone. "Returners Exhibit Greater Jumping Performance Improvements During a Peaking Phase Compared With New Players on a Volleyball Team." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/3778.

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Purpose: To determine if jumping-performance changes during a peaking phase differed among returners and new players on a female collegiate volleyball team and to determine which variables best explained the variation in performance changes. Methods: Fourteen volleyball players were divided into 2 groups—returners (n = 7) and new players (n = 7)—who completed a 5-wk peaking phase prior to conference championships. Players were tested at baseline before the preseason on measures of the vastus lateralis cross-sectional area using ultrasonography, estimated back-squat 1-repetition maximum, counte

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Pommerell, Félicie. "Etude des déterminants et modélisation biomécanique de la capacité de production de force en saut vertical." Electronic Thesis or Diss., Le Mans, 2025. https://cyberdoc-int.univ-lemans.fr/Theses/2025/2025LEMA1001.pdf.

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La performance en saut vertical est déterminante du succès de nombreuses actions motrices effectuées lors d’activités sportives (e.g. smash, bloc ou duel aérien). La performance en saut vertical, objectivée par l’élévation maximale du centre de masse, dépend de la capacité du système neuromusculaire à produire un travail mécanique élevé à travers la production de force sur une distance de poussée donnée. Lors de certaines actions, les sportifs doivent réaliser leurs sauts avec des contraintes temporelles variables qui peuvent nécessiter des ajustements de la distance de poussée et, en conséque

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Rosen, Adam B. "Differences in lateral drop-jumps from an unknown height among individuals with ankle instability." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 74 p, 2008. http://proquest.umi.com/pqdweb?did=1605135941&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Gomes, Ana Paula. "Efeito de ondas em margens a jusante de dissipadores de energia por ressalto hidráulico." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/178871.

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Este trabalho apresenta um estudo experimental sobre o efeito da ação das ondas nas margens de rios que estão a jusante de estruturas hidráulicas. O trabalho foi realizado em três etapas, sendo a primeira realizada em modelo físico reduzido parcial de um vertedouro em degraus com canal a jusante, instalado no Pavilhão de Obras Hidráulicas (IPH/UFRGS). Nesta primeira etapa, diferentes condições de vazão e submergência foram consideradas, com o objetivo de avaliar as características das ondas de superfície, geradas a jusante de um dissipador de energia por ressalto hidráulico. As características

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Addario-Berry, Dana. "Ballot theorems and the heights of trees." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102472.

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A ballot theorem is a theorem that yields information about the conditional probability that a random walk stays above its mean, given its value St after some specified amount of time t. In the first part of this thesis, ballot theorems are proved for all walks whose steps consist of independent, identically distributed random variables that are in the range of attraction of the normal distribution. With a mild assumption on the moments of the steps, the results are strengthened; the latter results are shown to be within a constant factor of optimal when the value of the random walk at time t

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Nowak, Stephanie Christine. "The Effect of Gluteus Medius Muscle Activation on Lower Limb Three-dimensional Kinematics And Kinetics in Male and Female Athletes during Three Drop Jump Heights." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23393.

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Women are four to eight times more likely to injure their anterior cruciate ligament (ACL) compared to men. It is most commonly injured through a non-contact mechanism during game time situations. During landings, women display valgus collapse, where a less active gluteus medius muscle (GMed) may be unable to control the internal rotation of the thigh, causing an increase in knee joint abduction angle, augmenting the risk of ACL injury. This study’s purpose was to determine the difference between 12 male and 12 female athletes in muscle activity, specifically the GMed, and the 3D kinematics an

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Guterres, Acacio da Costa. "The effects of different cutting heights, mulching and burning on the control of bellyache bush (jatropha gossypifolia L.) applicable in East Timor." Curtin University of Technology, Faculty of Science and Engineering, Muresk Institute, 2008. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=119757.

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Since bellyache bush invaded to East Timor it has significantly reduced crop and animal production and consequential loss of income from farm enterprises. Methods of control of bellyache bush chosen should be appropriate to the poor economic position of the farmers. An integrated method of controlling bellyache bush involving slashing combined with mulching and or burning is low cost and is widely used by the Timorese farmers. Although these practices are commonly used to control weeds, there are still many problems that appear in the field during and after weed control. For instance, rapid re

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Cho, Tzu-Yen, and 卓子嚴. "Eccentric impulses as mechanical determinants of countermovement jump height." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/wzqtya.

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碩士<br>國立體育大學<br>競技與教練科學研究所<br>106<br>The countermovement jump (CMJ) test is commonly used in high-performance sport to determine changes in neuromuscular (NM) function. Previous research has investigated the effects of concentric phase variables. Countermovement jump (CMJ) force-time curve related to eccentric impulse and phase duration might be useful in monitoring athletes’ performance. This study aimed to investigate the correlation between jump height and impulse and time in different phase. Method: Thirty-one Division I men’s basketball players (height = 186.2±6.8 cm; body mass = 84.5±13.

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Khuat, Cong Toai, and 郭功泰. "Determining the Appropriate Height of Drop Jump for Male Non-athletes." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/74586570401708911580.

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碩士<br>中國文化大學<br>體育學系運動教練碩博士班<br>101<br>Determining the Appropriate Height of Drop Jump for Male Non-athletes June, 2013 Student: Khuat Cong Toai Advisor: Prof. Hsien – Te Peng Abstract Drop jump is one of the most popular plyometric exercises. There is no research suggesting about appropriate drop heights according to subject’s jumping ability. This study aimed to determine the appropriate height of drop jump by percentage of vertical jump heights for male non-athletes. Fifteen physically active college students participated in this study and performed drop jumps from height

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Lin-Shu-Huang and 林書篁. "The Research of Countermovement Jump Eccentric Phase Performance and Jumping Height." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7q89rw.

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碩士<br>國立體育大學<br>競技與教練科學研究所<br>106<br>Purpose: The purpose of this study is to investigate the relationship between eccentric performance and countermovement jump (CMJ) height (JH), and whether eccentric performance is different in three different sport(basketball, judo, weightlifting).Methods: Twenty four NTSU Division I athletes participated in this study(age: 20.9± 1 year, height: 175.37± 9.63 cm, weight: 76.87 ± 15.85 kg).CMJs were measured force platforms, force-time curve were collected for further analysis. JH, eccentric center of mass (COM) displacement, force at zero velocity (F@0V), e

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Arvidsson, Julia. "Difference in Jump Height and Jump Length in Youth Soccer Players Selected or Not Selected for the National Team." Thesis, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-33916.

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Background: With the aim of professional status and sporting success, selection processes and talent identification in youth players are common in football clubs and national teams. Football requiring different types of abilities, standing out in certain abilities can be important in the selection process for national teams. Physical abilities including maximal power can differ between players in the same age group due to growth and maturation and might therefore be important factors in the selection process. Previous studies have mentioned maximal power as one of many performance indicators f

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Conradie, Érnsl. "Chiropractic adjustive therapy on sprint time and vertical jump height in rugby players." Thesis, 2014. http://hdl.handle.net/10210/9914.

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M.Tech. (Chiropractic)<br>Objective: To determine the effect of chiropractic adjustive therapy to the lumbar spine and sacroiliac joints on performance indicators such as sprint times and vertical jump height in asymptomatic, moderate-to-highly-active rugby players. Any dysfunction in the spine can affect biomechanics; neurological functioning of the lumbar spine and sacroiliac joints, as well as the surrounding muscles, and can therefore decrease performance. Methods: The study involved 60 asymptomatic male participants who were moderate-to-highly-active individuals as determined by the Inter

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"The Relationship Between Isometric Force Characteristics and Vertical Jump Height Under Various Loading Conditions." East Tennessee State University, 2008. http://etd-submit.etsu.edu/etd/theses/available/etd-0410108-163209/.

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Chang, Chin-Jung, and 張晉榮. "Effects of Drop Jump Starting Height on Eccentric Utilization Ratio and Reactive Strength Index." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/12478100140618329822.

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碩士<br>國立臺灣體育運動大學<br>體育研究所<br>105<br>The purposes of this study were to compare the effect of the heights of drop jump on the index of stretch shortening cycle (SSC), and to correlate estimates of the indexes of SSC derived from the joints of lower extremity and jump height. Fourteen male physical education university students were recruited as the participants voluntarily for this study. The mean age, height, and body mass of the participants were 21.6 ± 2.9 years old, 172.1 ± 2.9 cm, and 68.6 ± 4.4 kg, respectively. Each participant was asked to perform squat jump (SJ), counter movement jump

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Lee, Yow-Shi, and 李侑錫. "Acute and Residual effects of Weight-bearing Vibration Stimulus on Counter movement Jump Height." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/42112074103234478737.

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碩士<br>中國文化大學<br>運動教練研究所<br>98<br>Abstract Purpose: To investigate the effects of 18 kg weight-bearing vibration (30 Hz, 1 mm, 30 seconds; 5 sets, 2 minutes of rest between each set) on counter movement jump height. Methods: Twenty university students were divided into weight-bearing group and non weight-bearing group. The counter movement jump height was evaluated at 0, 10, 30 and 60 minutes following vibration stimulus by an AMTI force plates. The counter movement jump height before vibration stimulus was taken as the baseline value. Results: Compare to the baseline counter movement jump hei

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