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
More filters
Comparison of body composition, neuromuscular characteristics and anaerobic endurance between novice, semi-professional and professional ballet dancers
TL;DR: In this paper, the authors compared body composition, neuromuscular characteristics and anaerobic endurance between novice, semi-professional and professional ballet dancers, and found that body composition was correlated with dance performance.
Proceedings ArticleDOI
A vertical jumping performance with and without arms swing by using a dynamometric platform
S. Boukhenous,M. Attari +1 more
TL;DR: It is concluded that the swings of arms contribute to high-performance jumping movements in two vertical jumping movements with and without an arm swing.
Journal ArticleDOI
Determinant Factors of the Squat Jump in Sprinting and Jumping Athletes
TL;DR: The findings indicate that the peak force achieved at the beginning of the movement (PF1) is the main predictor of performance in jumping, although the RFDmax values and the ratio PF2/PF1 are also variables to be taken into account when analyzing the determinant factors of vertical jumping.
Journal ArticleDOI
Differences in Training Adaptations of Endurance Performance during Combined Strength and Endurance Training in a 6-Month Crisis Management Operation.
Kai Pihlainen,Keijo Häkkinen,Matti Santtila,Jani Raitanen,Heikki Kyröläinen,Heikki Kyröläinen +5 more
TL;DR: Soldiers who were initially leaner and fitter in terms of lower body strength and power were more likely to decrease their aerobic fitness during the operation.
Journal ArticleDOI
Differences of Explosive Strength in Judokas Medallists and Not Medallists
Luís Monteiro,Massuça, L.M Massuça, L.M,García-García, Jm García-García, Jm,Calvo-Rico, B Calvo-Rico, B +3 more
TL;DR: In this article, Monteiro et al. analyzed the explosive lower body strength in medalists judokas and not medalists, and found that the top-elite judoka are the ones more optimized with increased recruitment of motor units and increased activation of the same units.
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