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Showing 1 to 20 of 59 for “"countermovement jump"”.
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The Validity of The VmaxPro during Countermovement Jump and Back Squat Performance
… performance variables in the back squat and countermovement jump (CMJ) against a gold standard force plate. Squat variables assessed included mean concentric velocity (MCV), mean concentric power (MCP), depth, and duration while CMJ variables assessed included MCV, MCP, depth, duration, and …
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The acute effects of whole-body vibration and heavy resistance exercise on countermovement jump
… peak displacement were measured by means of a countermovement jump. Comparison between interventions showed no statistically significant differences in peak power or peak displacement at any time point, but ES calculations indicated that moderate to large changes occurred in peak displacement …
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The effect of variable resistance training for the post activation performance enhancement of the countermovement jump
… and VRT by steel chains on counter movement jump (CMJ) performance, specifically for jump height and positive net impulse. Twelve resistance-trained individuals volunteered to participate in three experimental trials. Completion of trials was randomised between the traditional, no-chain, and …
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Comparisons of countermovement jump and isokinetic performance in youth athletes: maturation and early sport specialization considerations
… of isokinetic knee flexion and extension, countermovement jump (CMJ)performance and muscle architecture in adolescents. Eight ultrasound variables, nine CMJ variables and six isokinetic variables were found to be reliable among this subject group and were subsequently used in the remaining …
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A study of biomechanical variables in the countermovement jump and the drop jump performed by female intercollegiate athletes
… in selected biomechanical 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 …
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Dynamic Strength Index and Countermovement Jump Performance in Female and Male Collegiate Basketball Athletes Across a Competitive Season
… levels of strength and power for actions such as jumping, sprinting, and changing direction. Monitoring these physical attributes across a competitive season can help inform training strategies. The countermovement jump (CMJ) and isometric mid-thigh pull (IMTP) are widely used to assess power and …
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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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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
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 …
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Anthropometric and physical fitness characteristics of badminton players in Icelandic youth national teams
… arm span, shoulder flexion, grip strength, countermovement jump, medicine ball throw, 505 agility test, badminton specific agility test and the YoYo intermittent recovery test level 1. Descriptive statistics were calculated for all experimental variables, and the results presented as mean …
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The Feasibility of Accelerometer-Derived Measures of Vertical Jump Height as a Marker of Neuromuscular Performance in Collegiate Soccer Players
… Tech Women's Soccer team participated in the countermovement jump assessment to find a reliable way to gauge player fatigue and readiness in these athletes. These were tested by assessing the within and between-day similarity of a countermovement jump test as a measure of neuromuscular …
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Net Impulse and Net Impulse Characteristics in Vertical Jumping
… net impulse and its characteristics in vertical jumping to monitor athletes' performance status and responses/adaptations to interventions. Five variables were proposed as net impulse characteristics: net impulse height and width, rate of force development, shape factor, and net impulse …
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Monitoring wellness, training load and neuromuscular performance: Implications for assessing athlete training status
… wellness and readiness-to-train as well as countermovement jump variables to assess neuromuscular performance were investigated within 4 inter-related studies. Methods: Four inter-related studies were designed to determine; 1) the validity and reliability of countermovement jump variables …
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Assessment and enhancement of lower extremity power of athletes
… DERIVED FROM GROUND REACTION FORCE DATA DURING COUNTERMOVEMENT JUMP AND INFLUENCE OF SAMPLING FREQUENCY. STUDY 2: COMPARISON OF FOUR DIFFERENT METHODS TO MEASURE POWER OUTPUT DURING THE HANG POWER CLEAN AND THE WEIGHTED JUMP SQUAT. STUDY 3: DOES PERFORMANCE OF HANG POWER CLEAN DIFFERENTIATE …
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7-WEEKS OF YOGA TRAINING AND ITS EFFECTS ON FLEXIBILITY, RATE OF FORCE DEVELOPMENT, AND JUMP HEIGHT IN OLYMPIC WEIGHTLIFTERS
… flexibility, rate of force development, and jump height. Pre- and post-testing was performed consisting of flexibility and jump performance measurements. The participants performed a sit and reach test followed by a loaded overhead squat test with barbell. The overhead squat test was …
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Strength factors associated with performance in change of direction tasks at different angles
… of the athletes were evaluated with a countermovement jump. The 10-to-5 repeated jump test was used to evaluate the plyometric strength capabilities of the athletes. The athletes performed a 20-m linear sprint to calculate CODD during the COD tasks. Change of direction ability was …
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Anthropometric characteristics, physical attributes, and relative age effect of elite youth soccer players: comparison between Iceland and Norway
… measurements of 10- and 30-meter sprint time, countermovement jump, Abalakov jump, the Illinois agility test, and the YoYo intermittent recovery test level 2. To analyse difference between groups, independent sample t-test was used while chi-square was used to analyse results based on date of …
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Effects of Eccentric Nordic Hamstring Exercise on Fascicle Length in Females
… ultrasound), lower body isokinetic strength, and countermovement jump height. Independent samples Mann-Whitney U test were used to assess whether the change in the outcome variables pre-to-post intervention were different between the groups. Although not statistically significant (p>0.05), the …
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Which resistance training method best improves running economy in elite marathon runners: a 16-week randomised controlled study
… 1- rep-max (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 …
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Quantifying neuromuscular performance of elite rugby union players: Measurement characteristics and moderating factors
… elite rugby union players through longitudinal countermovement jump (CMJ) monitoring. A systematic and agnostic framework for selecting CMJ metrics is proposed, integrating reliability, sensitivity, and covariance considerations. Over four studies, reliability, sensitivity, and covariance were …
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