Journal ArticleDOI
A simple method for measurement of mechanical power in jumping.
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
Reliability and validity of the 30-s continuous jump test for anaerobic fitness evaluation.
Juliano Dal Pupo,Rodrigo Ghedini Gheller,Jonathan Ache Dias,André Luiz Felix Rodacki,Antônio Renato Pereira Moro,Saray Giovana dos Santos +5 more
TL;DR: The continuous jump is a reliable test and measures some of the same anaerobic properties as WAnT and the correlations observed in terms ofAnaerobic indices between the tests provide evidence that the CJ30 may adequately assess anaerilic performance level.
Journal ArticleDOI
The influence of wearing compression stockings on performance indicators and physiological responses following a prolonged trail running exercise
Fabrice Vercruyssen,Christopher S. Easthope,Thierry Bernard,Christophe Hausswirth,François Bieuzen,Mathieu Gruet,Jeanick Brisswalter +6 more
TL;DR: The findings suggest that competitive runners do not gain any practical or physiological benefits from wearing CS during prolonged off-road running.
Journal ArticleDOI
The influence of extra load on the mechanical behavior of skeletal muscle.
C. Bosco,S Zanon,Heikki Rusko,A. Dal Monte,P Bellotti,F. Latteri,N Candeloro,E Locatelli,E Azzaro,R Pozzo +9 more
TL;DR: The improvement observed in the experimental subjects was explained as fast adaptation to the simulated high gravity field, and it is suggested that adaptation had occurred both in neuromuscular functions and in metabolic processes.
Journal ArticleDOI
Effects of In-Season Short-term Plyometric Training Program on Sprint and Jump Performance of Young Male Track Athletes.
TL;DR: It is concluded that adding plyometric training improved important components of athletic performance relative to standard in-season training in young runners.
Journal ArticleDOI
Validity and intra-rater reliability of MyJump app on iPhone 6s in jump performance.
TL;DR: The present study finds MyJump to be a valid and highly reliable tool for researchers, coaches, athletes and clinicians; however, systematic bias should be considered when comparing MyJump outputs to other testing devices.
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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