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
Proceedings ArticleDOI
Exploring the Potential of Vertical Jump Training in Virtual Reality
TL;DR: In this paper, the authors explore the potential of using virtual reality as a widely available platform for a personalized jump training application and identify possible use cases, such as instant replays of recorded jumps, an individual motion analysis, automatic exercise recommendations, and gamified workouts.
Journal ArticleDOI
Relationship between vertical jump tests and ice skating performance in junior Polish ice hockey players
TL;DR: In this article , the relationship between vertical jumps (VJ) and various on-ice skating performances of junior ice hockey players (n = 19) was determined using Pearson's product-moment correlation.
Journal ArticleDOI
Impact of time-of-day and chronotype on neuromuscular performance in semi-professional female volleyball players
Julio Martín-López,Milan Sedliak,David Valadés,Alejandro Muñoz,Jorge Buffet-García,Ricardo García-Oviedo,Manuel J Rodríguez-Aragón,Alberto Pérez-López,Álvaro López-Samanes +8 more
TL;DR: In this paper , the authors explored the relationship between chronotype and volleyball-specific performance and found that time-of-day could influence physical volleyball performance in females and to explore the relationship of chronotype with volleyball performance.
Journal ArticleDOI
Postactivation potentiation effect of two lower body resistance exercises on repeated jump performance measures.
Daniel Gahreman,Mehdi Abbasi Moghadam,Ehsan Hoseininejad,Vahid Valipour Dehnou,Jonathan D. Connor,Kenji Doma,Michael H. Stone +6 more
TL;DR: Results indicated that BSq was the optimal conditioning activity to increase power output during a repeated jump protocol, however, greater improvement during the BEST condition suggests that the type of conditioning activity should also be considered on an individual-basis.
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