Journal ArticleDOI
A simple method for measurement of mechanical power in jumping.
Reads0
Chats0
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
More filters
Journal ArticleDOI
Estimation of leg power: a two-variable model.
TL;DR: The leg power measurement may help athletes, coaches, athletic trainers, and rehabilitation specialists in selecting, treating, and training athletes for a specific sport.
Journal ArticleDOI
Influence of warm-up duration on perceived exertion and subsequent physical performance of soccer players.
TL;DR: The W up8min protocol was the only one that improved the acceleration ability of the soccer players in this study and stated a higher perceived exertion (RPE) than in the Wup15min and Wup8min protocols.
Journal ArticleDOI
Effect of jumping interval training on neuromuscular and physiological parameters: a randomized controlled study.
Jonathan Ache-Dias,Rodolfo André Dellagrana,Anderson Santiago Teixeira,Juliano Dal Pupo,Antônio Renato Pereira Moro +4 more
TL;DR: It is suggested that the JIT included in traditional endurance training induces moderate to large effects on neuromuscular and physiological parameters.
Journal Article
Effects of body mass-based squat training in adolescent boys
Yohei Takai,Yuko Fukunaga,Eiji Fujita,Hisashi Mori,Takaya Yoshimoto,Masayoshi Yamamoto,Hiroaki Kanehisa +6 more
TL;DR: It is indicated that body mass-based squat training for 8 weeks is a feasible and effective method for improving body composition and muscular strength of the knee extensors, and jump performance in adolescent boys.
Journal ArticleDOI
Atrophy/hypertrophy cell signaling in muscles of young athletes trained with vibrational-proprioceptive stimulation
Helmut Kern,Laura Pelosi,Luisa Coletto,Antonio Musarò,Marco Sandri,Michael Vogelauer,Lukas Trimmel,Jan Cvecka,Dušan Hamar,Josef Kovarik,Stefan Löfler,Nejc Šarabon,Feliciano Protasi,Nicoletta Adami,Donatella Biral,Sandra Zampieri,Ugo Carraro +16 more
TL;DR: Only VIB-trained group showed statistical significance increase of hypertrophy cell signaling pathways (IGF-1Ec and PGC-1α upregulation, and myostatin downregulation) leading tohypertrophy of fast twitch muscle fibers.
References
More filters
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.
Related Papers (5)
Utilization of stored elastic energy in leg extensor muscles by men and women
Paavo V. Komi,C Bosco +1 more