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Rajkumar, R. Vinodh. "STANDING LONG JUMP THEOREM: AN ACCIDENTAL DISCOVERY." International Journal of Physiotherapy and Research 3, no. 4 (July 7, 2015): 1105–10. http://dx.doi.org/10.16965/ijpr.2015.151.
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Bogdanis, Gregory C., Athanasios Tsoukos, and Panagiotis Veligekas. "Improvement of Long-Jump Performance During Competition Using a Plyometric Exercise." International Journal of Sports Physiology and Performance 12, no. 2 (February 2017): 235–40. http://dx.doi.org/10.1123/ijspp.2016-0116.
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Purpose:To examine the acute effects of a conditioning plyometric exercise on long-jump performance during a simulated long-jump competition.Methods:Eight national-level track and field decathletes performed 6 long-jump attempts with a full approach run separated by 10-min recoveries. In the experimental condition subjects performed 3 rebound vertical jumps with maximal effort 3 min before the last 5 attempts, while the 1st attempt served as baseline. In the control condition the participants performed 6 long jumps without executing the conditioning exercise.Results:Compared with baseline, long-jump performance progressively increased only in the experimental condition, from 3.0%, or 17.5 cm, in the 3rd attempt (P = .046, d = 0.56), to 4.8%, or 28.2 cm, in the 6th attempt (P = .0001, d = 0.84). The improvement in long-jump performance was due to a gradual increase in vertical takeoff velocity from the 3rd (by 8.7%, P = .0001, d = 1.82) to the 6th jump (by 17.7%, P = .0001, d = 4.38). Horizontal-approach velocity, takeoff duration, and horizontal velocity at takeoff were similar at all long-jump attempts in both conditions (P = .80, P = .36, and P = .15, respectively).Conclusions:Long-jump performance progressively improved during a simulated competition when a plyometric conditioning exercise was executed 3 min before each attempt. This improvement was due to a progressive increase in vertical velocity of takeoff, while there was no effect on the horizontal velocity.
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Martínez-del-Rio, Javier, and Miguel Pérez-Valls. "The long jump." Management Research: The Journal of the Iberoamerican Academy of Management 12, no. 1 (June 10, 2014): 92–100. http://dx.doi.org/10.1108/mrjiam-03-2014-0545.
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Purpose – The purpose of this paper is to help Ibero-American researchers identify the key challenges and benefits of moving to an Anglo-Saxon university for a period in their careers. Design/methodology/approach – This is a review of the insights provided by a number of prominent Ibero-American scholars based on the main experiences they have encountered. Findings – The paper analyzes three situations: a research visit, searching for a long-term position in North America (NA) and pursuing a PhD program in NA. The paper introduces some principles to succeed in these situations. Originality/value – The paper defines different strategies to take full advantage of a professional stage in an Anglo-Saxon/US university.
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Zalech, Mirosław, and Zbigniew Bujak. "Precise verbal feedback may expedite the attainment of standing long jump accuracy in women." Kinesiology 52, no. 1 (2020): 39–45. http://dx.doi.org/10.26582/k.52.1.5.
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The purpose of this study was to determine whether the precision of verbal feedback affected the accuracy of a standing long jump performance. Sixty-eight female participants (M age=21.44±1.01) were randomly assigned to two experimental groups. In total, each subject performed nine jumps at three distances, i.e. 50 cm (3 trials), 75 cm (3 trials) and 100 cm (3 trials). Group 2 performed jumps in a reverse order. During the task execution, the study participants received verbal feedback at different levels of precision (no feedback; information that the jump was either: too far, close, or correct; information about the distance in centimetres). The results of statistical analysis indicated that the speed of changes in jump accuracy depended on the precision of verbal feedback. The difference between an actual jump result and a target result increased proportionally with jump length. With a large number of trials, verbal feedback accuracy does not affect significantly the precision of women’s long jump performance. However, when the high accuracy of task performance needs to be obtained quickly, feedback ought to define the exact difference between the target and the actual jump results. The current findings also indicate that providing no feedback does not contribute to improving motor task performance accuracy.
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., Sutrisno, Budiman Agung Pratama, and Setyo Harmono. "Analysis of Long Jump Run Up Distance in MTSN 8 Jombang’s Students." International Journal of Research and Review 10, no. 1 (January 10, 2023): 204–9. http://dx.doi.org/10.52403/ijrr.20230122.
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The run up to the long jump is the important initial stage. This initial stage determines the results of the jump. Because if the speed is obtained at the start, it will affect the explosive power when making a jump so that the after repulsion becomes perfect and produces the best jump. The problems in this study were (1) What are the results of the analysis of the starting distance with the results of long jumps in class VII A students of Jombang State Madrasah Tsanawiyah 8 (2) Which starting distance produces the farthest jump in class VII A students of Jombang State Madrasah Tsanawiyah 8? This study used a quantitative approach with percentage descriptive techniques. The instrument used in this research was the kinovea application. The conclusions of this study (1) the results of the initial distance analysis in the long jump had an important role in producing the farthest jump. Because the starting distance will determine the inertia force that will occur causing a person's thrust to produce great power at the time of take off, resulting in the farthest jump, (2) The 30 meter run up distance is the best starting distance compared to the 35 meter and 40 run up distances. This was because the initial distance of 30 meters produces maximum speed, causing a greater force when taking off Keywords: [Analysis, Long Jump run up, Athletics.]
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KARALIS, T. K. "LONG JUMP: MECHANICAL AND ENERGETIC ASPECTS." Journal of Mechanics in Medicine and Biology 04, no. 04 (December 2004): 535–57. http://dx.doi.org/10.1142/s0219519404001120.
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The use of variation techniques is applied to investigate jumper's posture at take-off, resulting in maximum distance of jump. Explicit expressions have been derived between: (i) the take-off angle ϕT (formed by the line connecting the contact point of the leg driving the jump with the ground to the centre of mass position and the horizontal), (ii) the ratio [Formula: see text] of the mean vertical component of the ground reaction force vector to athlete's weight at take-off, (iii) the time spent for the mid-support/take-off phase TT, and (iv) the change in the vertical component of the displacement of the centre of mass compared with the take-off foot ΔyT, measured between two extreme postures, i.e. the mid-support and the take-off phase. The method is illustrated by calculating the state vector [Formula: see text] at take-off, in connection with the take-off angle ϕT. The results are compared to direct measurements from real long jumps.
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Bahramgiri, Mohsen, Shahabeddin Gharaati, and Iman Dolatabadi. "Modeling jumps in organization of petroleum exporting countries basket price using generalized autoregressive heteroscedasticity and conditional jump." Investment Management and Financial Innovations 13, no. 4 (December 29, 2016): 196–202. http://dx.doi.org/10.21511/imfi.13(4-1).2016.05.
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This paper uses autoregressive jump intensity (ARJI) model to show that the oil price has both GARCH and conditional jump component. In fact, the distribution of oil prices is not normal, and oil price returns have conditional heteroskedasticity. Here the authors compare constant jump intensity with the dynamic jump intensity and evidences demonstrate that oil price returns have dynamic jump intensity. Therefore, there is strong evidence of time varying jump intensity Generalized Autoregressive Heteroscedasticity (GARCH) behavior in the oil price returns. The findings have several implications: first, it shows that oil price is highly sensitive to news, and it does settle around a trend in long-run. Second, the model separates variances of high volatilities from smooth volatilities. Third, the model rejects an optimal path for extracting oil and technology transmission. In fact, the lack of a long-term pattern can cause excessive oil extracting which can result in heavy climatic effects. Keywords: generalized autoregressive heteroscedasticity (GARCH), jumps, basket, oil price, Organization of Petroleum Exporting Countries (OPEC), Autoregre-ssive jump intensity (ARJI). JEL Classification: C32, C52, F31
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Berg, William P., and Nancy L. Greer. "A Kinematic Profile of the Approach Run of Novice Long Jumpers." Journal of Applied Biomechanics 11, no. 2 (May 1995): 142–62. http://dx.doi.org/10.1123/jab.11.2.142.
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This study determined the kinematics of the final 11 steps of the long jump approach (LJA) for 19 novice long jumpers. Associations between takeoff accuracy and jump performance were identified, and comparisons of LJA kinematics were made with previous investigations of horizontal jumps performed by expert long jumpers. Results indicated that absolute takeoff error was not an important determinant of jump distance for the novice long jumpers. Additionally, novice jumpers differed from expert jumpers in terms of the relationships among specific variables. The results suggest that kinematic variables that appear to be causally related to jump performance in experts may not piay a similar role in the performance of novices. Hypotheses for these differences were offered. Differences between the LJAs of novice and expert long jumpers warrant further investigation, so that their origins can be determined and used to develop effective training regimes.
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Souza, Wanessa, and Bárbara Pessali-Marques. "Should the Heels Touch the Floor During the Plié in Classical Ballet Jumps." International Journal of Art, Culture, Design, and Technology 11, no. 2 (July 1, 2022): 1–8. http://dx.doi.org/10.4018/ijacdt.305797.
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This paper aimed to review the literature concerning the correct execution of the plié movement in the performance of different classical dance jumps. Studies about jumping techniques (such as countermovement jump, squat jump, and drop jump), the stretch-shortening cycle of short and long duration, classical dance jump and ballet mechanical action description by Agrippina Vaganova and Balanchine raised questions concerning different forms of plié execution preceding small and big jumps. Depending on the circumstance, they were especially concerning the heels contact on the floor during the plié execution before each jump. Understanding when the contact should happen or not is crucial for the prescription of adequate and specific training.
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Pranata, Didi Yudha. "RELATIONSHIP BETWEEN WEIGHT AND HEIGHT TO JUMP RESULTS IN EARLY AGE LONG JUMP ATHLETES FOSTERED BY PASI, ACEH BESAR REGENCY." Jurnal Ilmiah Teunuleh 3, no. 1 (March 28, 2022): 79–85. http://dx.doi.org/10.51612/teunuleh.v3i1.102.
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Athletics is the oldest sport in the world. Athletics has 4 numbers, namely running, walking, jumping and throwing numbers. Jump numbers have elements of physical conditions that must be owned by athletes, such as height and weight. The long jump is a sport that combines speed, strength, flexibility, endurance and accuracy in an effort to get as far as possible. Speed ??and strong leg muscles are also related to weight and height, because in the long jump the legs get a big load in the jump. Against the background of people's assumptions which state that differences in a person's body posture or weight and height affect the jump results, this research was conducted. In this study, a correlational research design was used which aims to determine the tendency of the existence or absence of correlation between variables. This correlational research was conducted to find out how much strength the relationship between the variables to be studied was. With the research subjects 7 Early Long Jump Athletes fostered by Pasi Aceh Besar District, so that in this study there were two variables, namely the dependent variable and the independent variable. Assuming H0: there is no relationship between weight and height and with jumps. H1: there is a relationship between weight and height with jumps. The research instruments used were of two kinds, namely instruments and test instruments. The research conducted will produce data in the form of ratio data, then the collected data is analyzed through inferential statistics in the form of simple, multiple regression analysis, and correlation analysis techniques. Based on the results of data analysis carried out, three conclusions were obtained as follows. First, with the results of H0 being rejected and H1 being accepted, there is a negative relationship between body weight and the long jump, which means that the heavier the weight, the shorter the long jump. The magnitude of the effect of body weight on the jump is 0.486 or 48.6%. Second, because H0 is rejected and H1 is accepted, there is a relationship between height and jump. The magnitude of the effect of height on the jump is 0.743 or 74.3%. Third, Based on the calculation, the correlation between weight and height combined has a relationship with jumps. The magnitude of the relationship is 61.45%. The conclusion is that for each sport it is necessary to pay attention to the body composition of the athlete in order to produce maximum results.
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Idrizović, Kemal, Nebojša Vujkov, and Ratko Pavlović. "Skok - dominantni troskok." Aktuelno u praksi: bilten za strucna pitanja u fizickoj kulturi 25, no. 2 (2015): 11–19. http://dx.doi.org/10.5937/aup1502011i.
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Jumpings are biotic motor skills with dual-purpose. They serve to man to overcome space and obstacles. Two basic elements of jumping are bounce and landing. Besides the jumps, jumping character have movement structures, such as: hops and skips. Most often, each of them in their structure have the elements which modify the basic structure of jumping, however, meeting the basic principles of jumping so may be and defined. In athletics, there are four jumping disciplines: long jump, triple jump, high jump and pole vault. Triple Jump is very demanding athletic technical discipline. The entire movement structure, which represents triple jump, is divided into its constituent parts: running start, first jump (hop), second jump (step) and third jump (jump).
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Qiao, Bao Ming, Si Zhang, and Hao Jin. "The Long-Term Dynamics in Crude Oil Prices." Applied Mechanics and Materials 260-261 (December 2012): 846–51. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.846.
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This paper reviews a long-term crude oil markets and trend of dynamic prices during 1986-2011. Based on the hypothesis that crude oil prices dynamics reflect the activity of a competitive market, a jump diffusion model is investigated to examine the empirical performance in a time series. Historical data analysis shows that crude oil prices were characterized by high volatility, high intensity jumps, and strong upward drift, and were concomitant with underlying fundamentals of crude oil markets and world economy. Furthermore, the model forecast that crude oil prices will still have an increasing trend, stay in jump for the next couple of years.
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Scarlassara, Fernando. "Long comments on the long jump-I." Physics Teacher 38, no. 6 (September 2000): 330–32. http://dx.doi.org/10.1119/1.1321808.
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Rodriguez, Fernando L. "Long comments on the long jump-II." Physics Teacher 38, no. 6 (September 2000): 332–33. http://dx.doi.org/10.1119/1.1321810.
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Branger, Nicole, Patrick Konermann, and Christian Schlag. "Optimists and Pessimists in (In)Complete Markets." Journal of Financial and Quantitative Analysis 55, no. 8 (September 6, 2019): 2466–99. http://dx.doi.org/10.1017/s002210901900070x.
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We study the effects of market incompleteness on speculation, investor survival, and asset pricing moments when investors disagree about the likelihood of jumps and have recursive preferences. We consider two models. In a model with jumps in aggregate consumption, incompleteness barely matters because the consumption claim resembles an insurance product against jump risk and effectively reproduces approximate spanning. In a long-run risk model with jumps in the long-run growth rate, market incompleteness affects speculation and investor survival. Jump and diffusive risks are more balanced regarding their importance, and therefore the consumption claim cannot reproduce approximate spanning.
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Zainuddin, Erwin. "Pengaruh Latihan Depth Jump To Rimp Jump dan Box Jump dan Panjang Tungkai Terhadap Jump Shoot." Jurnal Porkes 5, no. 1 (June 30, 2022): 304–13. http://dx.doi.org/10.29408/porkes.v5i1.5828.
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The purpose of this study was to analyze the effect of depth jump to rimp jump dan box jump exercise method on jump shoot result, the difference between the influence of the limbs are long and short limbs against the results of the jump shoot and depth jump to rimp jump dan box jump exercise interaction between the methods and the length of the legs against the results jump shoot. This research uses experimental methods with a 2 x 2 factorial design. The population in this study are atlet basket University of Tadulako of 30 people. Technique of data analysis using SPSS program 20.0. The results of the research there is a difference between the methods of exercise influence depth jump to rim jump and box jump against the results jump shoot. There is a difference between atlet who have long and short limbs against the results jump shoot, there is interaction between the methods of exercise and long limbs against the results jump shoot. A summary of this research is the box jump is better than on the depth jump to rim jump in improving results jump shoot.
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Cheng, Mingmian, and Norman Swanson. "Fixed and Long Time Span Jump Tests: New Monte Carlo and Empirical Evidence." Econometrics 7, no. 1 (March 13, 2019): 13. http://dx.doi.org/10.3390/econometrics7010013.
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Numerous tests designed to detect realized jumps over a fixed time span have been proposed and extensively studied in the financial econometrics literature. These tests differ from “long time span tests” that detect jumps by examining the magnitude of the jump intensity parameter in the data generating process, and which are consistent. In this paper, long span jump tests are compared and contrasted with a variety of fixed span jump tests in a series of Monte Carlo experiments. It is found that both the long time span tests of Corradi et al. (2018) and the fixed span tests of Aït-Sahalia and Jacod (2009) exhibit reasonably good finite sample properties, for time spans both short and long. Various other tests suffer from finite sample distortions, both under sequential testing and under long time spans. The latter finding is new, and confirms the “pitfall” discussed in Huang and Tauchen (2005), of using asymptotic approximations associated with finite time span tests in order to study long time spans of data. An empirical analysis is carried out to investigate the implications of these findings, and “time-span robust” tests indicate that the prevalence of jumps is not as universal as might be expected.
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Nur Aeni, Muhammad Rusli, and La Ode Rusdin. "HUBUNGAN PANJANG TUNGKAI DENGAN KEMAMPUAN LOMPAT JAUH GAYA JONGKOK MAHASISWA PENDIDIKAN JASMANI KESEHATAN DAN REKREASI ANGKATAN 2018 UHO." Journal Olympic (Physical Education, Health and Sport) 1, no. 1 (April 10, 2021): 24–39. http://dx.doi.org/10.36709/olympic.v1i1.4.
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The purpose of this study was to determine how much the relationship between leg length and squat style long jump ability in students of the physical education department / study program health and recreation, class 2018.
The population in this study were all students of Physical Education for Health and Recreation, batch 2018, amounting to 88 people consisting of 73 boys and 15 girls, the sample in this study was taken by purposive sampling, which is then based on the skills to make good jumps, right and right. So that it is obtained 35 students as a sample. The instrument used to measure the length of the limbs was the Anthropometer, while to measure the long jump ability of the squatting force was the squat-style long jump test.
The data in this study were analyzed using the product moment statistical technique 0.05%. In the study it was concluded that there was a relationship between leg length and the ability to jump long jump squatting where rxy = 0.49> r table 0.334. while the coefficient of determination (r ^ 2) = 0.24 or 24%. This shows that the level of correlation between the leg length variable (X) and the squat style long jump ability (Y) is in moderate correlation. Besides, 76% is influenced by other biomechanical factors.
The results of this study indicate that leg length has a significant relationship with the squat style long jump ability of students of the Health and Recreation Physical Education Department / study program, batch 2018.
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Tan, Ajun, and John Zumerchik. "Kinematics of the long jump." Physics Teacher 38, no. 3 (March 2000): 147–49. http://dx.doi.org/10.1119/1.880478.
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Seyfarth, A., A. Friedrichs, V. Wank, and R. Blickhan. "Dynamics of the long jump." Journal of Biomechanics 32, no. 12 (December 1999): 1259–67. http://dx.doi.org/10.1016/s0021-9290(99)00137-2.
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de mestre, Neville. "The long jump record revisited." Journal of the Australian Mathematical Society. Series B. Applied Mathematics 28, no. 2 (October 1986): 246–59. http://dx.doi.org/10.1017/s0334270000005348.
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AbstractA mathematical model is presented in which the long Jump is treated as the motion of a projectile under gravity with slight drag. The first two terms of a perturbation solution are obtained and are shown to be more accurate than earlier approximate analytical solutions. Results from the perturbation analysis are just as accurate as results from various numerical schemes, and require far less computer time.The model is modified to include the observation that a long-jumper's centre of mass is forward of his feet at take-off and behind his feet on landing.The modified model is used to determine the take-off angle for the current world long jump record, resulting in several interesting observations for athletic coaches.
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Mann, Brittany, Allison H. Gruber, Shane P. Murphy, and Carrie L. Docherty. "The Influence of Ankle Braces on Functional Performance Tests and Ankle Joint Range of Motion." Journal of Sport Rehabilitation 28, no. 8 (November 1, 2019): 817–23. http://dx.doi.org/10.1123/jsr.2018-0315.
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Context: The lateral ankle sprain is one of the most common lower-extremity injuries in sports. Previous research has found that some prophylactic ankle supports reduce the risk of recurrent ankle sprains and provide extra support to the joint. However, there is a continued concern that these supports may negatively influence performance. Objective: To determine if wearing an ankle brace influences athlete performance and ankle kinematics during functional performance tests. Design: Repeated measures. Setting: University gymnasium. Other Participants: Male and female recreational or competitive athletes (n = 20). Intervention: Participants performed 3 trials of a standing long jump, vertical jump, 40-yard sprint, and T-drill under each of the following 3 conditions: wearing traditional lace-up brace (brace 1), modified lace-up brace (brace 2), and no-brace. Main Outcome Measures: A 2-dimensional motion capture camera was used to measure ankle range of motion (ROM) in the sagittal plane during the vertical and standing long jumps and in the frontal plane during the cutting phase of the T-drill. Performance of each test and ankle ROM were compared between each of the braced conditions. Results: Ankle braces did not influence performance in speed or agility functional performance tests (P > .05). Ankle braces negatively affected performance of the standing long jump (P = .01) and vertical jump (P = .01). There was no significant difference between brace or no-brace conditions in ankle inversion ROM during the T-drill (P > .05). Both brace conditions restricted ROM in the sagittal plane during the vertical and standing long jumps (P < .05). Conclusions: Braced conditions restricted sagittal plane ROM during the vertical jump and long jump. This decrease in ROM explains the decline in functional performance also seen during these tests.
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UÇAR, Murat, Mürsel Ozan İNCETAŞ, Işık BAYRAKTAR, and Murat ÇİLLİ. "Using Machine Learning Algorithms for Jumping Distance Prediction of Male Long Jumpers." Journal of Intelligent Systems: Theory and Applications 5, no. 2 (September 1, 2022): 145–52. http://dx.doi.org/10.38016/jista.1078474.
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The long jump is defined as an athletic event, and it has also been a standard event in modern Olympic Games. The purpose of the athletes is to make the distance as far as possible from a jumping point. The main purpose of this study was to determine the most successful machine learning algorithm in the prediction of the long jump distance of male athletes. In this paper, we used age and velocity variables for predicting the long jump performance of athletes. During the research, 328 valid jumps belonging to 73 Turkish male athletes were used as data. In determining the most successful algorithm, mean absolute error (MAE), root mean square error (RMSE), Mean Squared Error (MSE), R2 score, Explained Variance Score (EVS), and Mean Squared Logarithmic Error (MSLE) values were taken into consideration. The outcomes of the analysis showed that long jump performance can be determined by chosen independent variables. The 5-fold cross-validation technique was used for the performance evaluation of the models. As a result of the experimental tests, the Gradient Boosting Regression Trees (GBRT) algorithm reached the best result with an MSE value of 0.0865. In this study, it was concluded that the machine learning approach suggested can be used by trainers to determine the long jump performance of male athletes.
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Leukel, Christian, Sabine Karoß, Florian Gräßlin, Jürgen Nicolaus, and Albert Gollhofer. "Do Primary School Children Benefit from Drop-Jump Training with Different Schedules of Augmented Feedback about the Jump Height?" Sports 10, no. 9 (September 2, 2022): 133. http://dx.doi.org/10.3390/sports10090133.
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In children, the training of jumps leads to improved jumping and running performance. Augmented feedback about the jump height is known to facilitate performance improvements in adults. In the present study, the impact of augmented feedback on jumping performance was investigated in 4th grade primary school children executing drop-jump training for 8 weeks (24 sessions, 3 times/week). Ten children (eight males, two females, aged 9.6 ± 0.3 years), received feedback for 8 weeks, and 11 children (nine males, two females, aged 9.5 ± 0.2 years) received feedback only during the last 4 weeks. Drop-jumps training was integrated in physical education classes. Drop-jump and countermovement-jump heights were improved after 24 training sessions (p < 0.01 for both types of jumps in both groups). Ground contact times of drop-jumps were quite long (>200 ms) and not altered by training, and the reactive strength index of drop-jumps was between 0.75 and 1.5 in most children. Augmented feedback did not facilitate jumping performance like in previous studies with adult participants. In contrast, withholding augmented feedback during the first 4 weeks of training was associated with a reduction in jumping performance (p < 0.01 for drop-jumps, p < 0.05 for countermovement-jumps). Finally, improvements did not transfer to functional motor tasks containing jumps. According to the costs and outcomes we do not recommend drop-jump training with augmented feedback about the jump height for 4th grade physical education classes.
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Shi, Peng Fei. "Long Jump Motion Analysis Based on the Aerodynamics." Advanced Materials Research 791-793 (September 2013): 1441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1441.
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The long jump motion is a traditional track and field event. This sport is not only relevant with athletes congenital physical conditions, but also with the action skills in the long jump process. In the process of long jump, from the run-up to the take-off and landing, relatively large air resistance will be suffered, and the air resistance is affected by the size of the take-off speed and jumping height. Based on this, this article has carried on the detailed analysis of the air dynamic theory in the process of athletes long jump. It also has established the mathematical model of the friction resistance and air pressure resistance in the long jump process, and it has obtained the maximum incident angle when the maximum jump distance was happened by the take-off angle. Finally, through the experiment method, it has established the jumping speed loss curve and loss table under the air resistance effect, and obtained the incident angle and take-off speed in the long jump process, which provides the theory basis for the research of long jump motion.
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Grosprêtre, Sidney, Pierre Ufland, and Daniel Jecker. "The adaptation to standing long jump distance in parkour is performed by the modulation of specific variables prior and during take-off." Movement & Sport Sciences - Science & Motricité, no. 100 (November 14, 2017): 27–37. http://dx.doi.org/10.1051/sm/2017022.
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The present study aimed at investigating different variables that can be manipulated prior to and during take-off, to execute a specific standing long jump (SLJ) distance, according to jump expertise in parkour practitioners (= traceurs). Fourteen healthy young traceurs were included and separated into two groups: beginners (BEG) and experts (EXP). Firstly, classical vertical jump battery was used to characterize participants arm use and leg efficiency. Secondly, standing long jump (SLJ) performances were analyzed at four distances: 70, 80, 90, and 100% of each participant’s maximal SLJ distance. The force-time curves of the ground reaction forces (GRF) and the center of pressure (CoP) trajectory were measured with a force platform during the jump impulses. Take-off speed, angle and jump trajectory were estimated. For all of the participants, take-off speed and angle, power output, and vertical GRF during jump preparation (counter movement) varied with distance. The EXP group exhibited greater backward CoP excursion, greater arm participation, greater take-off velocity and a greater modulation of take-off angle than BEG group. When comparing jumps of similar distance, EXP exhibited a more curvilinear trajectory with a higher peak than BEG. To conclude, different motor strategies can be adopted based on the jump distance, and these strategies can evolve as parkour experience increases.
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Yani, Ahmad. "PENGARUH METODE LATIHAN SIRKUIT, METODE KONVENSIONAL DAN MOTIVASI BERPRESTASI TERHADAP KEMAMPUAN LOMPAT JAUH GAYA JONGKOK." Primary: Jurnal Pendidikan Guru Sekolah Dasar 4, no. 2 (December 16, 2015): 134. http://dx.doi.org/10.33578/jpfkip.v4i2.2947.
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Based on the researcher’s observation on the field, it seems that the ability of students of SMK Teknologi Riau in long jump is still low, and many students don’t have good enough techniques of long jump itself, besides that, the training method that is used is not appropriate yet. The purpose of this research is to find out the effect of circuit training method, conventional method and motivation performance towards the students’ long jump ability at SMK Teknologi Riau. This type of this research is quasi-experimental using factorial 2x2, the population of this research are the tenth grade students of SMK Teknologi Riau consist of 107 students, while the samples of this observation are 88 male students and make this sample become 27% high group (27% from 88 students=24 male students) and 27% low group (27% from 88 male students=24 students), so that the total sample who are given the methods are 48 students. The instrument that is used is long jump test. The data has been analyzed by two ways anava and Tuckey test. The result of data analysis shows that : (1) There are different of result of long jump ability between circuit and conventional groups ( Fvalue = 4.75 ˃ Ftable = 4.06 ), (2) There are interaction between training method and motivation (Fvalue = 46.35 ˃ Ftable = 4.06 ), (3) The motivation got high category, the ability of students long jump who are given circuit method are better than the students who are given conventional method (Qh = 3.08 ˃ Qt = 2.91 ), (4) In the motivation has got low category, the ability of students’ long jump who are given conventional method is better than the students who are given circuit method ( Qh = 3.85 ˃ Qt = 3.76 ).Keywords: circuit method, conventional method, motivation performance, towards the students’ long jum.
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King, Adam, and Max Power. "The role of attainability and external focus of attention on standing long jump performance." Brazilian Journal of Motor Behavior 15, no. 3 (September 1, 2021): 207–15. http://dx.doi.org/10.20338/bjmb.v15i3.232.
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BACKGROUND: External focus of attention (FOA) promotes enhanced performance and learning in comparison to internal FOA; however, several dimensions associated with external FOA appear to have varying influence on motor skill performance. AIM: The purpose of this study was to investigate whether an attainability aspect of external FOA elicits enhanced standing long jump performance. METHOD: Fifteen healthy males performed standing long jumps in the following conditions: without a visual target (Tno), target placed at maximum distance (Tmax), and a target placed 10% beyond maximum distance (Tmax+10). Jump distances were measured, and kinetic data were recorded using a force platform. RESULTS: One-way ANOVA showed significantly greater jump distances for Tmax+10 compared to Tno and Tmax (p < 0.01). Additionally, the impulse of the ground reaction force (GRFimpulse) in the anterior-posterior direction was significantly greater for Tmax and Tmax+10 compared to Tno (p < 0.05). CONCLUSION: Thus, an external FOA tailored to individual ability benefits standing long jump performance. Overall, the findings support the approach of adopting an external FOA with an emphasis on targets that are specific to the individual and based on attainability.
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Makaruk, Hubert, Jared Marak Porter, and Marcin Starzak. "Environmental and task constraints influence footfall variability in track and field jumping events." International Journal of Sports Science & Coaching 13, no. 4 (September 27, 2017): 552–58. http://dx.doi.org/10.1177/1747954117733888.
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By analysis of footfall variability in the long jump, triple jump, and pole vault, the present study was designed to highlight gait variability patterns required in varied nested tasks. Twelve male athletes in each event who participated in one international and two national competitions were involved in this study. Twenty five pairs of 1-m Optojump Next system bars were used to evaluate relevant footfall placement. The footfall variability was taken to present the pattern of step regulation and onset of visual regulation. The main results of this study showed that pole vaulters manifested a highly consistent gait pattern, which was different than the pattern which appeared in the horizontal jumps. The results also revealed that the onset of step length adjustments in the horizontal jumps occurred significantly later during the zeroing-in phase of the approach run in comparison to those utilized by the pole vaulters. These findings indicate that locomotor pointing control in the long jump, triple jump, and pole vault produce specific footfall variability patterns due to different task and environmental constraints that need to be taken into account during training and competition settings.
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Pradon, Didier, Alice Mazure-Bonnefoy, Giuseppe Rabita, Emilie Hutin, Raphael Zory, and Jean Slawinski. "The biomechanical effect of arm mass on long jump performance: A case study of a paralympic upper limb amputee." Prosthetics and Orthotics International 38, no. 3 (August 28, 2013): 248–52. http://dx.doi.org/10.1177/0309364613497392.
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Background: The role of arm motion during the long jump has been well studied. The aim of this study was to quantify the effect of forearm mass on impulse and the kinematics of the flight phase in an upper limb amputee. Case description and methods: A world-record paralympic long jumper carried out jumps in three conditions: wearing his usual forearm prosthesis and with 0.3 and 0.4 kg added mass. A motion capture system including force plates was used to record the jump. Findings and outcome: At take-off, the addition of 0.4 kg to the prosthesis decreased the vertical velocity of the centre of mass but increased horizontal velocity. These modifications were associated with an increase in landing distance and an improvement of the synchronization between arms. Conclusion: Increasing forearm mass appears to improve long jump performance. Further studies need to evaluate the optimal prosthetic mass for both training and competition. Clinical relevance This biomechanical analysis of the long jump highlighted the effects of changing prosthesis mass on performance. This methodological approach may be useful in the context of sport and performance research.
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Koh, Timothy J., and James G. Hay. "Landing Leg Motion and Performance in the Horizontal Jumps I: The Long Jump." International Journal of Sport Biomechanics 6, no. 4 (November 1990): 343–60. http://dx.doi.org/10.1123/ijsb.6.4.343.
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The motions of the landing leg in the final three strides of the approach in the long jump are described, as are the relationships of these landing leg motions with performance. Film analysis of 19 elite male long jumpers competing in the 1986 and 1987 TAG (U.S. national) Championships showed that backward sweeping, or “active,” landings were used in each stride considered. However, the landing in the last stride was less active than those in the two preceding strides. A mathematical model showed that muscle action reduced the forward horizontal velocity of the landing foot in each landing. There were no statistically significant correlations of measures of landing leg motion with measures of performance. However, there was some indication that landing leg motion plays a role in lowering the center of gravity in the second-last stride and that this lowering increases the distance of the jump. There was also some indication that placing the landing foot well forward of the body at the end of the last stride benefits the distance of the jump, perhaps by promoting the development of vertical velocity during the support phase of the jump. This appears to be more important than minimizing the loss in horizontal velocity during the support phase of the jump.
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Kang, Naeyoung, and Jungmu Kim. "An Empirical Analysis of Bitcoin Price Jump Risk." Sustainability 11, no. 7 (April 4, 2019): 2012. http://dx.doi.org/10.3390/su11072012.
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Given that there are both continuous and discontinuous components in the movement of asset prices, existing asset pricing models that assume only continuous price movements should be revised. In this paper, we explore the features of jumps, which are discontinuous movements, by examining Bitcoin pricing. First, we identify jumps in the Bitcoin price on a daily basis, applying a non-parametric methodology and then break down the Bitcoin total rate of return into a jump rate of return and a continuous rate of return. In our empirical analysis, price jumps turn out to be independent of volatility. Moreover, the jumps in the Bitcoin price do not appear at regular intervals; rather, they tend to be concentrated in clusters during special periods, implying that once an economic crisis occurs, the crisis will last for a long time due to contagion effects and the economy will take a considerable amount of time to recover fully. Further, the contribution of the jump rate of return to the total rate of return of the Bitcoin price is lower than the contribution of the continuous return, implying that the pursuit of sustainable returns rather than large but temporary returns will improve the total rate of return over the long term. Finally, more jumps are observed when trading volume is lower, implying that market illiquidity drives discontinuous movement in asset prices. Overall, the features of jump risk are like two sides of the same coin and jump risks are expected to have a significant effect on asset pricing, suggesting that consideration of jumps is essential for risk management as well as asset pricing.
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Haigh, John. "The long jump: How to jump the same distance and win." Significance 9, no. 2 (April 2012): 34–36. http://dx.doi.org/10.1111/j.1740-9713.2012.00559.x.
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Mackala, Krzysztof, Samo Rauter, Marek Zawartka, Milan Čoh, and Janez Vodičar. "The Relationship between Symmetrical and Asymmetrical Jumps and Their Influence on Speed Abilities: Gender Consideration." Symmetry 13, no. 4 (April 16, 2021): 694. http://dx.doi.org/10.3390/sym13040694.
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Purpose: Plyometric exercises, in the form of jumping, are extreme physical activities. The aim of the study was to determine how symmetrical-single versus asymmetrical-continued plyometric exercises differ between men and women and affect speed abilities. Methods: Twenty-two healthy females and forty-four males from different sports practices participated in the investigation. The countermovement jump (CMJ) and drop jump (DJ) of 40/60 cm box were performed on two independent and synchronized force platforms (Bilateral Tensiometric Platform S2P, Ljubljana, Slovenia). The measurement of a standing long jump (SLJ) and all continuous jumps: standing five jumps (SFJ), standing bounce triple jump (SBTJ), five double-leg jumps (FD-LJ), and a 10 m horizontal single leg jump (HSLJ-10mL/R) were performed using OptoJump–Next Microgate (OptoJump, Bolzano, Italy). Results: Statistically significant differences were noted in all jump kinematic and somatic parameters, in favor of the men. The correlations between values of height of symmetrical jumps (bilateral) and distance (SLJ) were stronger in women despite the shorter jumps than the men. When an alpha-level of 0.01 was set, this study demonstrated a stronger correlation between symmetrical-single and asymmetrical-continuous plyometrics exercises and sprints, both men and women. This relationship is due to their similar kinematic and dynamic structures with sprinting steps. Conclusions: The results showed a large dispersion of the relationship (p < 0.05) between jumps and sprints divided into 10, 20 and 30 m, both in men and women. Both types of exercises implemented as a plyometric training regime are an extremely important tool for sprint speed development.
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Mackala, Krzysztof, Marek Fostiak, Brian Schweyen, Tadeusz Osik, and Milan Coch. "Acute Effects of a Speed Training Program on Sprinting Step Kinematics and Performance." International Journal of Environmental Research and Public Health 16, no. 17 (August 28, 2019): 3138. http://dx.doi.org/10.3390/ijerph16173138.
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The purpose of this study was to examine the effects of speed training on sprint step kinematics and performance in male sprinters. Two groups of seven elite (best 100-m time: 10.37 ± 0.04 s) and seven sub-elite (best 100-m time: 10.71 ± 0.15 s) sprinters were recruited. Sprint performance was assessed in the 20 m (flying start), 40 m (standing start), and 60 m (starting block start). Step kinematics were extracted from the first nine running steps of the 20-m sprint using the Opto-Jump–Microgate system. Explosive power was quantified by performing the CMJ, standing long jump, standing triple jump, and standing five jumps. Significant post-test improvements (p < 0.05) were observed in both groups of sprinters. Performance improved by 0.11 s (elite) and 0.06 s (sub-elite) in the 20-m flying start and by 0.06 s (elite) and 0.08 s (sub-elite) in the 60-m start block start. Strong post-test correlations were observed between 60-m block start performance and standing five jumps (SFJ) in the elite group and between 20-m flying start and 40-m standing start performance and standing long jump (SLJ) and standing triple jump (STJ) in the sub-elite group. Speed training (ST) shows potential in the reduction of step variability and as an effective short-term intervention program in the improvement of sprint performance.
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Williams, Ellen, Anne Carter, and Jacqueline Boyd. "Kinetics and Kinematics of Working Trials Dogs: The Impact of Long Jump Length on Peak Vertical Landing Force and Joint Angulation." Animals 11, no. 10 (September 26, 2021): 2804. http://dx.doi.org/10.3390/ani11102804.
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Working trials is a competitive canine discipline based on work undertaken by military and police dogs. A 9 ft long jump is a key component of the discipline. Research into landing forces and joint angulation in other canine disciplines has highlighted the potential for the occurrence of soft tissue injuries, predominantly in the front limbs. There is a paucity of work into the impact of spread/long jumps on joint angulation and peak vertical force (PVF) on landing, and limited research on working trials dogs generally. This study aimed to determine whether altering the length of the long jump impacted PVF and apparent joint angulation upon landing. 21 dogs regularly competing in working trials cleared the long jump at three lengths: 9 ft (full length), 8 ft, and 7 ft. The impact of altered long jump length on the PVF, apparent shoulder and carpus angulation, and duration of landing, were analysed using general linear mixed models. There was no significant relationship between the length of the long jump and PVF or joint angulation on landing (p > 0.05). Greatest joint compression was observed on landing after clearing 9 ft. Individual variability in landing joint angulation, PVF and force distribution of the left and right front limbs on landing was observed across all three experimental lengths. We recommend further research is undertaken to examine individual variability and the effect of training and experience in working trials participants, to provide evidence-based recommendations for training people and competing dogs in this discipline.
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Cheng, Kuangyou B., and Mont Hubbard. "Optimal Simulation of the Standing Long Jump with Arm Swing(Sports Biomechanics)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2004.1 (2004): 207–8. http://dx.doi.org/10.1299/jsmeapbio.2004.1.207.
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Jovanović, Miloš. "Human Long Jump — A Deductive Approach." International Journal of Advanced Robotic Systems 9, no. 4 (January 2012): 108. http://dx.doi.org/10.5772/51036.
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A Nasser, Gammal, Iman Sulaiman, and Aan Wasan. "MOVEMENT ANALYSIS OF LONG JUMP SKILLS." Gladi : Jurnal Ilmu Keolahragaan 12, no. 02 (June 30, 2021): 162–69. http://dx.doi.org/10.21009/gjik.122.08.
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Socialization regarding technical motion analysis using technological tools. It is also possible that in analyzing technical motions, they only use the sense of sight, namely the eyes in the process of analyzing students' technical movements. This feels less than optimal because the eyes have limitations. This study aims to analyze the performance of jumping skills which includes four factors, namely prefix, repulsion, hovering in the air and landing and whether there is a step shortening distance before taking off. This research is a type of qualitative descriptive research. The results of the data obtained are then analyzed using the Dartfish Prosuite software. This research will be carried out in the field of Plus Pembangunan Jaya Senior High School, South Tangerang City. As for the subjects in this study, 17 students aged 15-17 years. The results of the analysis of the motion of long jump skills at Plus Pembangunan Jaya Senior High School, South Tangerang City which includes four factors, namely prefix, repulsion, hovering in the air and landing. fit into the "suitable" criteria. Based on the results of the analysis, no one has shortened the steps before taking off on students at Plus Pembangunan Jaya Senior High School, South Tangerang City. It is known that the athlete's initial running speed every 8 meters has increased with an average speed of 7.2m/s.
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Hay, James G. "Approach Strategies in the Long Jump." International Journal of Sport Biomechanics 4, no. 2 (May 1988): 114–29. http://dx.doi.org/10.1123/ijsb.4.2.114.
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The purpose of this study was to determine whether elite long jumpers make use of a visual control strategy during the final four strides of their approach. Analysis of existing film records revealed that all subjects adopted a visual control strategy at some point during their final strides. Data for the last four strides were insufficient to permit the actual point to be identified in most cases. A second study was undertaken to determine the location of this point and whether it is a function of the error accumulated during the preceding phase of the approach. The performances of 19 subjects were recorded over the last 8–10 strides of the approach. On average, the subjects adopted a visual control strategy on the 5th-last stride. The point at which this strategy was adopted was apparently unrelated to the error in the accuracy of striding up to that point.
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Bundy, Mark L. "Aerodynamic Jump for Long Rod Penetrators." Defence Science Journal 50, no. 2 (January 1, 2000): 109–18. http://dx.doi.org/10.14429/dsj.50.3364.
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Pirino, Davide. "Jump detection and long range dependence." Physica A: Statistical Mechanics and its Applications 388, no. 7 (April 2009): 1150–56. http://dx.doi.org/10.1016/j.physa.2008.12.035.
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Vorobiev, Andrei G., Gideon B. Ariel, and Igor A. Ter-ovanessian. "Long jump technique: Power or speed?" Journal of Biomechanics 27, no. 6 (January 1994): 695. http://dx.doi.org/10.1016/0021-9290(94)91064-2.
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Yukarda, Acen, Dian Pujianto, and Arwin Arwin. "PENGARUH LATIHAN PLIOMETRIK STANDING LONG JUMP (BROAD JUMP) DAN STANDING JUMP TERHADAP LOMPAT JAUH GAYA GANTUNG ATLET ATLETIK LOMPAT JAUH PROVINSI BENGKULU DI PPLP BENGKULU." KINESTETIK 3, no. 2 (September 6, 2019): 216–22. http://dx.doi.org/10.33369/jk.v3i2.8923.
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AbstrakPenelitian ini bertujuan untuk mengetahui pengaruh latihan pliometrik standing long jump (broad jump) dan standing jump terhadap lompat jauh gaya gantung atlet atletik provinsi Bengkulu di PPLP Bengkulu. Lompat jauh adalah olahraga yang mengabungkan kecepatan, kekuatan, kelenturan, daya tahan, power, dan ketepatan. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dan menggunakan desain One-Group Pretest-posttes Desing. Penelitian ini dilaksanakan di PPLP Provinsi Bengkulu terpatnya dilapangan PPLP Provinsi Bengkulu. Teknik Pengumpulan data dalam penelitian ini adalah tes lompat jauh gaya gantung. Sampel dalam penelitian ini atlet atletik lompat jauh Provinsi Bengkulu di PPLP Provinsi Bengkulu yang berjumblah 12 orang dibagi menjadi 2 kelompok perlakuan, dengan teknik sampling purposive. Analisis data dalam penelitian ini menggunakan t-test. Berdasarkan hasil perhitungan statistik hasil uji-t kelompok eksperimen 1 diperoleh thitung sebesar 4.328 lebih besar dari ttabel sebesar 2.571 dan taraf singnifikan 5%, Sedangkan kelompok eksperimen 2 diperoleh thitung sebesar 4.284 lebih besar dari ttabel sebesar 2.571 dan taraf singnifikan 5%. Hal ini menunjukan adanya peningkatan sebelum dan sesudah diberikannya perlakuan sehinga hipotesis penelitian ini Ha diterima dan Ho ditolak. Sehinga dapat disimpulkan bahwa latihan pliometrik standing long jump (broad jump) dan standing jump dapat meningkatkan prestasi lompat jauh gaya gantung. Kata kunci: Pliometrik, Standing Long Jump (Broad Jump), Lompat Jauh, Gaya Gantung Abstract This study aims to determine the effect of pliometric exercise standing long jump (broad jump) and standing jump against long jump style hanging athletic athletes of Bengkulu province in PPLP Bengkulu. Long jump is a sport that combines speed, strength, flexibility, endurance, power, and precision. The method used in this study is the experimental method and using the design of One-Group Pretest-posttes Desing. This research was conducted in PPLP of Bengkulu Province in PPLP field in Bengkulu Province. Techniques Data collection in this study is a long jump style test. The sample in this study athletic athletes long jump Bengkulu Province in PPLP Bengkulu Province which bertumblah 12 people divided into 2 groups of treatment, with purposive sampling technique. Data analysis in this research use t-test. Based on the result of statistical calculation result of t-test of experiment group 1 obtained t count equal to 4,328 bigger than ttabel equal to 2,571 and 5% significant level, while experiment group 2 obtained titung equal to 4,284 bigger than ttable equal to 2,571 and 5% significant level. This indicates an increase before and after the given treatment so that this research hypothesis Ha accepted and Ho rejected. So it can be concluded that pliometric exercise standing long jump (broad jump) and standing jump can improve the achievement of long jump style. Keywords: Plyometrics, Standing Long Jump (Broad Jump), Long Jump, Hanging Style
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Maćkała, Krzysztof, Marek Fostiak, and Kacper Kowalski. "Selected Determinants of Acceleration in the 100m Sprint." Journal of Human Kinetics 45, no. 1 (March 1, 2015): 135–48. http://dx.doi.org/10.1515/hukin-2015-0014.
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Abstract The goal of this study was to examine the relationship between kinematics, motor abilities, anthropometric characteristics, and the initial (10 m) and secondary (30 m) acceleration phases of the 100 m sprint among athletes of different sprinting performances. Eleven competitive male sprinters (10.96 s ± 0.36 for 100 with 10.50 s fastest time) and 11 active students (12.20 s ± 0.39 for 100 m with 11.80 s fastest time) volunteered to participate in this study. Sprinting performance (10 m, 30 m, and 100 m from the block start), strength (back squat, back extension), and jumping ability (standing long jump, standing five-jumps, and standing ten-jumps) were tested. An independent t-test for establishing differences between two groups of athletes was used. The Spearman ranking correlation coefficient was computed to verify the association between variables. Additionally, the Ward method of hierarchical cluster analysis was applied. The recorded times of the 10 and 30 m indicated that the strongest correlations were found between a 1- repetition maximum back squat, a standing long jump, standing five jumps, standing ten jumps (r = 0.66, r = 0.72, r = 0.66, and r = 0.72), and speed in the 10 m sprint in competitive athletes. A strong correlation was also found between a 1-repetition maximum back squat and a standing long jump, standing five jumps, and standing ten jumps (r = 0.88, r = 0.87 and r = 0.85), but again only for sprinters. The most important factor for differences in maximum speed development during both the initial and secondary acceleration phase among the two sub-groups was the stride frequency (p<0.01).
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WU, WEN-LAN, JIA-HROUNG WU, HWAI-TING LIN, and GWO-JAW WANG. "BIOMECHANICAL ANALYSIS OF THE STANDING LONG JUMP." Biomedical Engineering: Applications, Basis and Communications 15, no. 05 (October 25, 2003): 186–92. http://dx.doi.org/10.4015/s1016237203000286.
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The purposes of the present study were to (1) investigate the effects of the arm movement and initial knee joint angle employed in standing long jump by the ground reaction force analysis and three-dimensional motion analysis; and (2) investigate how the jump performance of the female gender related to the body configuration. Thirty-four healthy adult females performed standing long jump on a force platform with full effort. Body segment and joint angles were analyzed by three-dimensional motion analysis system. Using kinetic and kinematic data, the trajectories on mass center of body, knee joint angle, magnitude of peak takeoff force, and impulse generation in preparing phase were calculated. Average standing long jump performances with free arm motion were +1.5 times above performance with restricted arm motion in both knee initial angles. The performances with knee 90° initial flexion were +1.2 times above performance with knee 45° initial flexion in free and restricted arm motions. Judging by trajectories of the center mass of body (COM), free arm motion improves jump distance by anterior displacement of the COM in starting position. The takeoff velocity with 90° knee initial angle was as much as 11% higher than in with 45° knee initial angle. However, the takeoff angles on the COM trajectory showed no significant differences between each other. It was found that starting jump from 90° bend knee relatively extended the time that the force is applied by the leg muscles. To compare the body configurations and the jumping scores, there were no significant correlations between jump scores and anthropometry data. The greater muscle mass or longer leg did not correlated well with the superior jumping performance.
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Wang, Qun Long. "Mechanics Analysis of Long Jump by Means of the Theory of Artificial Neural Networks." Advanced Materials Research 1014 (July 2014): 106–9. http://dx.doi.org/10.4028/www.scientific.net/amr.1014.106.
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Takeoff is extremely important to long jump. The paper analyzes the mechanics characteristics of takeoff for long jump by means of the theory of neural network. It firstly discusses some importantly influencing factors for long jump in theory. On the basis of description of the theory of Artificial Neural Network, the back propagation network is applied to model the long jump. The results show that an excellent performance of long jump is depend on a rapid run-up speed and the rhythm of the final two steps.
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Attia, Ahmed, Zied Nèji, Néjiba Farhat, Aymen Khemiri, Ahmed Kouki, Nejib Rejeb, Riadh Khalifa, and Chortane Sabri Gaied. "Relationships between Horizontal Drop Jump Test and Sprint Performance." Ukraïnsʹkij žurnal medicini, bìologìï ta sportu 6, no. 1 (February 26, 2021): 352–58. http://dx.doi.org/10.26693/jmbs06.01.352.
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Researchers and trainers are continually looking for determinants of soccer talent in the youngest and in the relationship between individual motor features relevant to this kind of sport. There is a fundamental consensus in the opinion that sprinting and jumping share a number of similar characteristics in soccer players. To the authors’ knowledge, the majority of the studies has been conducted in adult and young athletes and there has yet to be an analysis with prepubescent male players. Therefore, the purpose of this study was to investigate the relationships between the standing long jump, the three-hop test and sprint performance in prepubescent male soccer players. Material and methods. This study comprised 112 prepubescent soccer players (aged 12.08±1.79 years; height: 154.35±12.50 cm; body mass 43.69±10.28 kg). They were assessed for a 30-m linear sprint with three split sprint times, standing long jump test and three-hop test. The associations and relationships between horizontal jump performance in three-hop test and standing long jump with 0-5m, 10-m, 20-m and 30-m sprint times were investigated. Results and discussion. Correlations and linear regressions were assessed. There were weak and large associations between sprint and jump measures (r = -0.21 to -0.66; p <0.001). Linear regressions all included standing long jump as a predictor, but not three-hop test. There were no regression equations that would predict sprint times from triple hop distance that were significant. In their study of national team female athletes Agar-Newman and Klimstra, (2015) showed contradictory results. In their athletes, triple hop distance was a better predictor than standing long jump of both initial sprint speed, and maximal sprint speed. Thus, this area requires further research to better understand the mechanisms through which both sprint and jump performances are achieved in prepubescent male soccer players. Conclusion. Overall, the results of our study support the use of 30-m linear sprint and horizontal jump performance tests for prepubescent male soccer players. This research showed that sprint times correlated to horizontal jump performance in three-hop test and standing long jump tests. It showed the utility of the standing long jump test to evaluate lower limb performance between prepubescent male soccer players
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Charis, Sutan Irvan, Alex Aldha Yudi, and Sari Mariati. "Effect Of Plyometric Training on Long Jump Ability." Jurnal Performa Olahraga 4, no. 01 (June 17, 2019): 61–70. http://dx.doi.org/10.24036/jpo102019.
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This study discusses plyometric exercises in improving the long jump ability of self-development students of SMAN 1 Batang Anai. The purpose of this study was to describe the process and results of conducting plyometric exercises of 16 meetings for the long jump ability of the self-improvement students of SMAN 1 Batang Anai Padang Pariaman. the type of research used is quasi-experimental research. The design of this study is one group pre-test-posttest design. The study population was students who participated in athletic self-development activities at SMAN 1 Batang Anai Padang Pariaman, amounting to 16 people. The sampling technique in this study used a Census Sampling of 16 people. The exercises are given 4 times per week for 16 meetings. The instrument used is the long jump. Data analysis using t-test. Based on the results of research conducted it can be concluded that there is a significant influence of plyometric exercises on increasing the ability of long jump self-development students of SMAN 1 Batang Anai Padang Pariaman, where tcount = 3.64> ttable = 1.74. The average long jump ability of a student's initial test is 3.64 and the average long jump ability of a student's final test is 4.15.
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Siregar, Fajar Sidik. "RELATIONSHIP OF BLOOD MUSCLE EXPLOSION POWER TO THE ABILITY OF RUNNING AWAY AT AIR WALKING STYLE IN XSMA HOSANA CLASS STUDENTS." Jurnal Ilmiah STOK Bina Guna Medan 8, no. 2 (October 31, 2020): 88–99. http://dx.doi.org/10.55081/jsbg.v8i2.119.
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A long jump is a form of jumping motion lifting the leg up forward in an effort to bring the weight point as long as possible in the air which is done with the repulsion of one leg to reach the greatest distance. The object and pedestal of the long jump are to achieve the greatest possible distance of the jump. The distance of the jump is measured from the repulsion board to the nearest limit of the landing position produced by the body part. The purpose of this study was to determine the relationship between leg power and the long jump ability of HosanaMedan high school students. Based on the results of data processing, it can be concluded that there is a positive and significant relationship between the explosive power of the leg muscles on the long jump ability (r = 0.72), the explosive power of the leg muscles contributes 51.84% to the long jump ability of Class X students of SMA Hosana Field.