Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Drop jump"”.
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A study of biomechanical variables in the countermovement jump and the drop jump performed by female intercollegiate athletes
… parameters during countermovement (CMJ) and drop (DJ) jumps. A secondary purpose was to descriptively compare the performances of the two jump conditions. Two sagittal view high speed videocameras filmed 25 female intercollegiate basketball and volleyball athletes performing CMJs and DJs. One …
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Monitoring Drop Jump Height and Psychological Measures throughout Competitive in-Conference Division 1 Collegiate Basketball Season "An Exploratory Study"
… during conference play and consisted of two drop jump trials and completion of the Recovery-Cue seven (RC7). Subjects also completed the Recovery-Stress questionnaire (REST-Q) on weeks 1 and 5. Results: A significant increase (P <.05) was observed in team mean RC7 scores from week 4 to week …
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Desarrollo de herramientas para identificar factores biomecánicos de riesgo de la lesión de ligamento cruzado anterior a través de protocolo de instrumentación del drop jump en deportistas colombianos
… se han evaluado diferentes saltos incluyendo el Drop Jump (DJ); sin embargo, aún no hay consenso en el protocolo de instrumentación que se debe utilizar para valoraciones biomecánicas que usen SOCM combinado con electromiografía de superficie (EMG) y sin recurrir al uso de una plataforma de …
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Does Psychological Readiness Affect Jump Biomechanics Across the Continuum of Care Following Anterior Cruciate Ligament Reconstruction?
… psychological readiness to return to sport on jump–landing biomechanics after anterior cruciate ligament reconstruction (ACLR) at the time of return to sport testing and 6 weeks after returning to sport. The first aim of the study was to examine whether the level of psychological readiness …
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Can a pre-training biomechanical pathway identify the most effective exercise to enhance a given group’s, subgroup’s or individual’s countermovement jump height?
Background: Countermovement jump (CMJ) ability is an important contributor to successful performance in many sports. While the drop jump, squat, jump squat and power clean training exercises are each purported to enhance maximal CMJ jump height, there are generally inconsistent findings regarding …
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Training load quantification in professional Australian basketball and the use of the reactive strength index as a monitoring tool
… reactive strength index (RSI) calculated from a drop jump in professional men’s basketball. Purpose: To evaluate the reliability of the reactive strength index (RSI) and jump height (JH) performance from multiple drop heights with elite basketball players. Methods: Thirteen professional …
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Anthropometry and physical characteristics in English premiership women’s rugby
… up of strength and power tests (countermovement jump, drop jump, and isometric mid-thigh pull) were investigated and grouped by position. Overall, forwards had significantly (p < 0.01) higher body mass, fat mass, lean mass, bone mineral content, and take-off momentum, and backs had significantly …
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The effect of acute fatigue on reactive strength index in modern dancers
… the Reactive Strength Index (RSI) derived from a drop jump. Methods: Twelve professional modern dancers (8 female, 4 male) participated in this study. Two force plates were utilized to record the force-time data during drop jumps (DJ) before and after an acute, fatiguing protocol. Dancers …
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The effect of Fast Eccentric Squats on measures of strength, power and speed
… peak power output (PPO) Wattbike test and 0.4m drop jump (DJ). Testing was completed seven days prior to the start of the intervention and then seven, 14 and 28 days following the intervention. There were no significant (p > 0.05) between-group differences in performance; however, the FE group …
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Landing Technique Assessment Utilizing Laboratory-Based Landing And Simulated Basketball Landing Tasks
… knee joint kinematics between the LESS vertical-drop jump (DVJ), and two simulated basketball landing performances, jump-stop jump shot (JS) and rebounding (RB). <strong>Design</strong>: Prospective, cross-sectional study. Setting: An intramural basketball court. <strong>Participants</strong>: …
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The assessment of fatigue-related changes in stride mechanics, variability and long-range correlations in recreational and elite distance runners using foot-mounted inertial sensors
… A final study assessed the impact of a fatiguing drop jump protocol on joint stiffness, stride mechanics and measures of variability. As before, a group of elite and recreational distance runners were recruited for this experiment. It was found that joint stiffness was significantly reduced after …
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The application of PCA as a movement pattern recognition technique: A proof of principle
… three sport-screening movements (i.e. bird-dog, drop jump, T-balance) were analyzed. A PCA-based pattern recognition technique was used to analyze the data. Prior to analyzing the effects of skill level or sport on movement patterns, methodological considerations related to motion analysis …
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Stretch-Shortening Cycle in Human Muscle Contraction: The Role of the Stretch Reflex in Force Production in Various Vertical Jumps
… the stretch reflex contribution during vertical jumping performance and to determine the ratio of the stretch reflex contribution relative to elasticity in the stretch-shortening contraction of the vastus lateralis muscle during the following vertical jumps: counter-movement jump (CMJ), …
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Which resistance training method best improves running economy in elite marathon runners: a 16-week randomised controlled study
… (RM) Smith machine back squat, countermovement jump, squat jump, drop jump, running biomechanics, aerobic treadmill test, maximal anaerobic running test (MART), and 5km time trial (5kmTT) were measured. A linear mixed model analysis assessed the group-by-time interaction for each variable. …
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The Relationship Between the Hamstrings to Quadriceps Strength Ratio and Anterior Cruciate Ligament Forces
… tasks: single and double-leg squatting, a drop jump, and walking. A secondary purpose was to determine the independent effects of the hamstrings and quadriceps on peak ACL forces during the same tasks by perturbing the maximal isometric force production of each muscle group within a …
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Biomechanical Study of Jumping & Landing Techniques: Ballet vs Non-ballet Athletes
… knee valgus angle presented during a vertical drop jump [8, 14, 15]. Hewett et. al. concluded that a knee valgus angle was a primary predictor of the mechanism that leads to an ACL rupture [8]. By increasing the excessive knee valgus angle during a two-legged DVJ, an athlete is in turn …
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Contemporary and novel assessment of biomechanics in plyometric and ballistic exercise and the implications for elite and recreational athletes
Jumping exercises, comprising plyometrics and ballistic jumps, are commonly used and important in the development of athletic performance. However, our ability to describe training doses with accurate and meaningful measures lags significantly behind other forms of training. Furthermore, the …
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A unique specific jumping test to estmate explosive power for basketball players: validity, reliability and differences in age, gender and playing position
… and 10-meter sprint speed tests; standing broad jump assessment; horizontal and vertical drop jump tests; 2x5-meter change of direction ability test; countermovement jump test; squat jump test; bounding power test; and spike jump test. As some of these tests suit a number of ball games, the …
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Asymmetries within elite youth soccer players: an investigation into the impact of soccer-specific loading
… isometric mid-thigh pull (IMTP), countermovement jump (CMJ), single-leg countermovement jump (SLCMJ), and single-leg drop jump (SLDJ) were analysed. The results showed good reliability for the propulsive and braking phase metrics in jumping tests (CMJ and SLCMJ), whereas the metrics in the landing …
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Significance of the smash-lunge sequence and lunges in relation to badminton singles match performance
… a badminton specific agility test, the RSI in a drop jump test, and dynamic balance in the mSEBT. Correlations between these measures and the three badminton lunging tests (SSL, SSLBB, BB) were analysed by Pearson correlation coefficients. Linear mixed effect model was also used to identify the …
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