Three Different Methods of Calculating Vertical Jump Height from Force Platform Data in Men and Women

Moir, Gavin L.

doi:10.1080/10913670802349766

Cited by 255 publications

(298 citation statements)

References 6 publications

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“…In this study, the highest AV QUA , for example, was obtained in CMJ<90°, and PREF situations where the highest linear speeds of center of mass and better performance were observed. It has been observed that in vertical jumps performed with higher squat depth, higher knee and hip flexion angles was obtained [10][11][12][13][14][15][16] . This maneuver becomes inevitable in jumps with greater amplitude seeking to maintain body balance 5 .…”

Section: Discussionmentioning

confidence: 99%

“…According to Herzog et al 11 in dynamic actions, in addition to contractile elements, the total muscle strength production is greatly influenced by the elastic elements. Thus, if in greater muscle lengths, greater contribution of these elements was observed, the involvement of the contraction "machinery" (sarcomere) would be reduced, decreasing neuronal recruitment and hence the EMG activity [11][12][13][14][15][16][17][18][19][20][21] . For biarticular RF and BF muscles, the RMS values were similar during the concentric phase in the three situations tested.…”

Section: Discussionmentioning

confidence: 99%

“…The height of vertical jumps was calculated using the flight time recorded by the platform, according to equation 14 :…”

Section: Kinetic Analysismentioning

confidence: 99%

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A influência da profundidade de agachamento no desempenho e em parâmetros biomecânicos do salto com contra movimento

Gheller

Pupo

Lima

et al. 2014

Rev. Bras. Cineantropom. Desempenho Hum.

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-The aim of this study was to analyze the effect of different squat depths in the performance and biomechanical parameters at counter movement jump (CMJ). Twentytwo male volleyball or basketball players volunteered to participate in this study and all were currently competing at the college level. The CMJ was performed in three different conditions: 1) with relative knee flexion at the end of counter movement phase smaller than 90° (<90°); 2) greater than 90° (>90°), and; 3) preferred position (PREF). During the CMJ, kinematic, kinetic, and electromyography parameters were assessed. ANOVA for repeated measures with post-hoc Bonferroni´s test was used for variables comparison, with a significance level set at p≤0.05. The higher performance was on PREF and <90° situations compared with CMJ>90°. Average and peak power, as well as absolute and normalized peak forces, were higher in >90° CMJ. The peak velocity of CG and angular velocities of hip and knee were higher in the <90° condition. EMG activity of the vastus lateralis (VL) during the descending and ascending phases were higher in position >90°. Recuts femoris and biceps femoris did not show difference in any jump phases. In conclusion, the knee flexion interferes the performance and the biomechanical variables at the CMJ. The highest jumps were got at a deeper squat, so this technique could be used for athletes in order to optimize the vertical jump performance in the training and competitions. Key words: Stretch-shortening cycle; Vertical jump. Resumo -O objetivo do presente estudo foi analisar a influência de diferentes profundidades de agachamento no desempenho e em parâmetros biomecânicos no salto com contra movimento (CMJ). Participaram do estudo 22 atletas de voleibol ou basquetebol do sexo masculino, participantes de competições em nível regional e universitário. Os CMJ foram realizados em três condições: 1) com flexão relativa do joelho ao final da fase de contra movimento menor que 90° (CMJ<90°); 2) maior que 90° (CMJ>90°) e; 3) posição preferida (CMJ PREF)

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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A influência da profundidade de agachamento no desempenho e em parâmetros biomecânicos do salto com contra movimento

Gheller

Pupo

Lima

et al. 2014

Rev. Bras. Cineantropom. Desempenho Hum.

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“…In contrast, the jump height in the US and FT_DI methods was defined as the vertical distance between the highest point during the jump and standing. Two studies have revealed the displacement of the centre of mass prior to take-off of 11.9 ± 2.1 and 14.4 ± 0.7 cm, respectively (20,21). Using the vertical displacement of the left lateral malleolus between the standing and take-off positions in the calibrated videos, the authors have quantified a distance of 10.8 ± 1.0 cm (95% CI 10.6 to 11.1).…”

Section: Discussionmentioning

confidence: 99%

Differences and Trial-to-Trial Reliability of Vertical Jump Heights Assessed by Ultrasonic System, Force-Plate, and High-Speed Video Analyses

Baumgart

Honisch²,

Freiwald

et al. 2017

Asian J Sports Med

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Background: Jump analyses are frequently conducted in the sport and rehabilitation sector by different methods. This study aimed to compare a new ultrasonic system (US) measuring the distance between standing and the highest point of the jump with (a) the impulse-momentum (FP_IM), double integration (FP_DI), and flight-time (FP_FT) methods using a force plate and (b) the risetime (VA_RT) and vertical distance (VA_VD) methods of the ankle using a high-speed video analysis. Additionally, the trial-to-trial reliability of each method was examined.

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“…All kinetic data were divided by body mass to allow for a normalized comparison of these data between sexes. Jump height was derived from the vertical velocity at take-off [19]. A modified reactive strength index (MRSI) was calculated as the jump height (m) divided by movement time (s) [7].…”

Section: Discussionmentioning

confidence: 99%

Stretch-Shortening Cycle in Countermovement Jump: Exclusive Review of Force-Time Curve Variables in Eccentric and Concentric Phases

Cheraghi¹,

Sarvestan²,

Sebyani³

et al. 2017

Preprint

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Abstract:The importance of vertical jump in sport fields and rehabilitation is widely recognized.Furthermore, Force-Time variables of vertical jump are factors affecting jumping height. Exclusive review of each of this variables, in eccentric and concentric phases, can lead to a specific focus on them during jumping exercises. So, the aims of his study were to a) reviewing the relationship between force-time curve variables of eccentric and concentric phases with jump height and b) description of this variables in Iran national youth volleyball players society. This is an observational study. 12 elite volleyball player (Male, Iran national youth volleyball players, 17±0.7 years) have participated in this study. Correlation between Force-Time variables -included peak force (PF), relative peak force (RPP), peak power (PP), average power (AP), relative peak power (RPP), and Modified Reactive Strength Index (MRSI) -in eccentric and concentric phases and ultimate jump height has been studied. Results showed that the average power (r=0.7) and relative peak force (r=0.75) of concentric phase and MRSI (r=0.83) have significant correlation with ultimate jump height (JH). Relative peak power and average power of concentric phase can massively effect Jump Height in sports like volleyball, which vertical jump is an integral part of them. Focus on both of these factors, which has been studied in this research, in training programs, can improve athlete jump performance significantly.

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Three Different Methods of Calculating Vertical Jump Height from Force Platform Data in Men and Women

Cited by 255 publications

References 6 publications

A influência da profundidade de agachamento no desempenho e em parâmetros biomecânicos do salto com contra movimento

A influência da profundidade de agachamento no desempenho e em parâmetros biomecânicos do salto com contra movimento

Differences and Trial-to-Trial Reliability of Vertical Jump Heights Assessed by Ultrasonic System, Force-Plate, and High-Speed Video Analyses

Stretch-Shortening Cycle in Countermovement Jump: Exclusive Review of Force-Time Curve Variables in Eccentric and Concentric Phases

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