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
Aumento de altura en salto en jugadores universitarios de voleibol
Pablo Quiroga Maraboli,Alejandro Bustamante Garrido,Christopher Avendaño Hernández,Sebastián Cáceres Guerra,Sebastián Urrea González +4 more
TL;DR: In this paper, an estudio piloto cuantitativo cuasi experimental tiene como objetivo determinar en cual de las zonas de fuerza descritas por Naclerio se debe entrenar para que la PPA se exprese, en mayor medida, evidenciado en las variaciones de altura of un salto counter movement jump (CMJ).
Journal ArticleDOI
Effects of explosive and impact exercises on gait parameters in elderly women
Jhon Fredy Ramírez-Villada,Laura Lorena Cadena-Duarte,Adriana Rocio Gutierrez-Galvis,Rodrigo Argothy-Bucheli,Yesica Moreno-Ramírez +4 more
TL;DR: The aquatic training program described here produced an increase in muscle strength and muscle power, thus gait parameters were improved and should be considered for older adults, since their participation in these programs could help them improve their functional capacity, and, thus, their quality of life.
Journal ArticleDOI
Characterization of Static Strength, Vertical Jumping, and Isokinetic Strength in Soccer Players According to Age, Competitive Level, and Field Position
João Nuno Gouveia,Cíntia França,Francisco Martins,R. Henriques,Marcelo de Maio Nascimento,Andreas Ihle,Hugo Sarmento,Krzysztof Przednowek,Diogo V. Martinho,Élvio R. Gouveia +9 more
TL;DR: In this paper , the authors used a hand dynamometer (Jamar Plus+), countermovement jump (CMJ) and squat jump (SJ) to assess the isokinetic strength of knee extension/flexion.
Nível de aptidão aeróbia e anaeróbia de atletas profissionais da segunda divisão do Campeonato Paraibano de Futebol
Marcílio Emmanuel Felix-Ferreira,Leandro Sávio Oliota-Ribeiro,Marcos Antônio do Nascimento,José Onaldo Ribeiro de Macêdo +3 more
TL;DR: In this paper, the authors analyzed the aerobic and anaerobic capacity of professional football field athletes and concluded that the professional athletes of the second division of the Paraguayan football championship present a good aerobic performance and an anaerodynamic performance, superior to other professional football athletes found in the literature.
Journal ArticleDOI
Reactive strength index during single-limb vertical continuous jumps after anterior cruciate ligament reconstruction: cross-sectional study
Kenji Hirohata,Junya Aizawa,Takehiro Ohmi,Shunsuke Ohji,Sho Mitomo,Toshiyuki Ohara,Hideyuki Koga,Kazuyoshi Yagishita,Tetsuya Jinno,Atsushi Okawa +9 more
TL;DR: In this paper , the association of the reactive strength index (RSI) during single-limb vertical continuous jumps (SVCJ) with SVCJ in post-ACLR athletes was investigated.
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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