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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Journal ArticleDOI
Vertical Jump Height Estimation Algorithm Based on Takeoff and Landing Identification Via Foot-Worn Inertial Sensing
TL;DR: Results indicate that the presented algorithm could be applied to foot-worn inertial sensors to estimate maximum jump height enabling assessment outside of traditional laboratory settings, and to avoid bias errors, the toe may be a more suitable location for inertial sensor placement than the heel.
Journal ArticleDOI
Slackline Training in Children with Spastic Cerebral Palsy: A Randomized Clinical Trial.
Lucía González,Juan Argüelles,Vicente González,Kristian Winge,Marta Iscar,Hugo Olmedillas,Miguel Blanco,Pedro L. Valenzuela,Alejandro Lucia,Peter Federolf,Luis Santos,Luis Santos +11 more
TL;DR: Sl slackline training improved static postural control and motor skills and was perceived as non-fatiguing in children/adolescents with spastic CP.
Journal ArticleDOI
Intrasession Reliability of the Tests to Determine Lateral Asymmetry and Performance in Volleyball Players
Mario Iglesias-Caamaño,Javier Carballo-López,Tania Álvarez-Yates,Alba Cuba-Dorado,Oscar García-García +4 more
TL;DR: AKE, LS, and YBT are the best tests to determine, with reliability, the asymmetries in volleyball players, and a greater symmetry in the YBT seems to influence the height of bilateral vertical jump.
Journal ArticleDOI
Análisis de la capacidad de salto antes, durante y después de la competición en jugadores internacionales junior de baloncesto. (Analysis of jumping capacity before, during and after competition in international junior basketball players).
TL;DR: Benksen et al. as mentioned in this paper evaluated the jump height in CMJ by eight different times (before and after warm up, at rest, immediately after the game and within minutes 1', 3', 5 'and 7' after completion of the competition) using a contact platform.
Journal ArticleDOI
Características antropométricas y de potencia muscular en Futbolistas Costarricenses entre los 15 y 20 años
TL;DR: In this paper, a total of 84 futbolistas of cinco equipos of la division de alto rendimiento del futbol costarricense with an edad promedio of 17.8 ± 1.2 anos were evaluated.
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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