Journal ArticleDOI
A simple method for measurement of mechanical power in jumping.
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TLDR
The new jumping test seems suitable to evaluate the power output of leg extensor muscles during natural motion because of its high reproducibility and simplicity, and is suitable for laboratory and field conditions.Abstract:
A simple test for the measurement of mechanical power during a vertical rebound jump series has been devised. The test consists of measuring the flight time with a digital timer (+/- 0.001 s) and counting the number of jumps performed during a certain period of time (e.g., 15-60 s). Formulae for calculation of mechanical power from the measured parameters were derived. The relationship between this mechanical power and a modification of the Wingate test (r = 0.87, n = 12 males) and 60 m dash (r = 0.84, n = 12 males) were very close. The mechanical power in a 60 s jumping test demonstrated higher values (20 W X kgBW-1) than the power in a modified (60 s) Wingate test (7 W X kgBW-1) and a Margaria test (14 W X kgBW-1). The estimated powers demonstrated different values because both bicycle riding and the Margaria test reflect primarily chemo-mechanical conversion during muscle contraction, whereas in the jumping test elastic energy is also utilized. Therefore the new jumping test seems suitable to evaluate the power output of leg extensor muscles during natural motion. Because of its high reproducibility (r = 0.95) and simplicity, the test is suitable for laboratory and field conditions.read more
Citations
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Análisis comparativo de la capacidad de salto en gimnastas de trampolín españoles Comparative analysis of the jumping capacity in Spanish trampoline gymnasts
TL;DR: In this paper, a study was conducted to analyze the jump capacity jump in Spanish trampoline gymnasts and compare different categories with each other, through a descriptive cross-sectional design.
Journal ArticleDOI
Contrast loading: power output and rest interval effects on neuromuscular performance.
TL;DR: The load that maximizes external mechanical-power output compared with a heavier or a lighter load, using the jump-squat exercise, is not more effective for increasing jumping performance afterward.
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Pre-pubertal males practising Taekwondo exhibit favourable postural and neuromuscular performance
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A Multi-Block Multivariate Analysis to Explore the Influence of the Somatic Maturation in Youth Basketball.
TL;DR: In this paper, the influence of somatic maturation in anthropometric, physical, and game-related variables in youth basketball age groups under-13 and under-15 was examined.
Journal ArticleDOI
Effects of Postactivation Performance Enhancement on The Vertical Jump in High-Level Volleyball Athletes
Guilherme Pereira Berriel,A. S. Cardoso,Rochelle Rocha Costa,Rodrigo Gomes da Rosa,Henrique Bianchi Oliveira,Leonardo Alexandre Peyré-Tartaruga +5 more
TL;DR: In this article , the authors evaluated the effects of a training session with and without an intervention of postactivation performance enhancement (PAPE) on countermovement jump (CMJ) height, perceived recovery status (PRS), and ratings of perceived exertion (RPEs), followed by a specific volleyball training session.
References
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Journal Article
Utilization of stored elastic energy in leg extensor muscles by men and women
Paavo V. Komi,C Bosco +1 more
TL;DR: The results suggest that although the leg extensor muscles of the men subjects could sustain much higher stretch loads, the females may be able to utilize a greater portion of the stored elastic energy in jumping activities.
Journal ArticleDOI
Biomechanical analysis of knee flexion and extension
TL;DR: For the knee, mathematical analyses for the sagittal plane were performed on data obtained from roentgenograms and a load cell incorporated in a specially constructed force table to find the axis of rotation for the knee displaced 3·2 cm through a 90° range.
Journal ArticleDOI
Storage of Elastic Energy in Skeletal Muscles in Man
TL;DR: It is suggested that the elastic energy is stored in the active muscles, and it is demonstrated that the muscles of the legs are activated in the downward jumps before contact with the platform is established.
Journal ArticleDOI
Measurement of muscular power (anaerobic) in man.
R. Margaria,P. Aghemo,E. Rovelli +2 more
Journal ArticleDOI
Combined effect of elastic energy and myoelectrical potentiation during stretch-shortening cycle exercise
TL;DR: The observed results emphasize that both elastic energy and reflex potentiation may operate effectively during stretch-shortening cycle activity.
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Utilization of stored elastic energy in leg extensor muscles by men and women
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