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
The relative age effects in young soccer players and it relations with the competitive level, specific position, morphological characteristics, physical fitness and technical skills
Augusto Pedretti,Alessandro Pedretti,João Brito de Oliveira Fernandes,António Rebelo,André Seabra +4 more
TL;DR: In this article, the relative age effects (RAE) in young soccer players and it relations to morphological, technical and physical variables, in a sample of 267 male players from U17 and U19 categories were investigated.
Journal ArticleDOI
A Comparative Study on the Performance Profile of Under-17 and Under-19 Handball Players Trained in the Sports School System.
Tomasz Gabrys,Arkadiusz Stanula,Subir Gupta,Urszula Szmatlan-Gabrys,Daniela Benešová,Łukasz Wicha,Jakub Baron +6 more
TL;DR: The training pattern of the handball players needs to be revised so that U19 players may develop faster and be more enduring than the U17 group, which failed to convert their superior power into speed and jump.
Journal ArticleDOI
University students’ experiences of the use of mLearning as a training resource for the acquisition of biomechanical knowledge
Ignacio López-Moranchel,Evelia Franco,Belén Urosa,Patricia Maurelos-Castell,Esther Martín-Íñigo,Victoria Montes +5 more
TL;DR: In this article, the authors evaluated the impact of the use of mobile applications as a learning resource in applied biomechanics, with regard to attitudinal variables (interest, motivation, applicability and learning experience) and its efficacy in the learning of general physics contents.
Journal ArticleDOI
Avaliação da simetria e descarga de peso entre os membros inferiores de atletas de futebol da categoria de base
TL;DR: In this article, an avaliacao instrumentada dos saltos verticais informa sobre as capacidades funcionais e variaveis neuromusculares, auxiliando no atendimento dos atletas.
Journal ArticleDOI
Individualized Endurance Training Based on Recovery and Training Status in Recreational Runners
TL;DR: In this article , the authors examined whether individually adjusted endurance training based on recovery and training status would lead to greater adaptations compared with a predefined program and found that individualized training seemed more beneficial in endurance performance.
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