An exoskeleton was designed with the primary goal of enhancing the maximum dynamic capability of a human, thus allowing the user to run faster, jump higher, or traverse challenging terrain. This paper presents the mechanical design of an alpha prototype with a focus on increasing the maximum vertical jump height of a human. High torque motors were constrained to the body with two degrees of fre...

The aim of the present study was to determine if an inertial measurement unit placed on metatarsal part foot can provide valid and reliable data for accurate estimate vertical jump height. Thirteen female volleyball players participated in study. All were members Republic Serbia national team. Measurement height performed two exemplary jumping tasks, squat counter-movement jump. Vertical estima...

Vertical jump menjadi salah satu faktor penunjang keberhasilan dalam teknik permainan bola basket. Penelitian ini betujuan untuk mengetahui hubungan antara variabel flexibility, panjang tungkai dan velocity terhadap vertical jump. Pada penelitian menggunakan metode korelasi dengan desain deskriptif. Teknik pengambilan sampel total sampling. Sejumlah 18 pemain (usia 19,5±3 tahun, tinggi badan 18...

When humans perform maximum height squat jumps, their segmental rotations contribute in a proximodistal sequence to the vertical acceleration of the center of gravity. The same kinematic pattern occurs in a forward dynamic model of the musculoskeletal system when muscle stimulation is optimized to maximize jump height. This paper examines why this kinematic pattern maximizes jump height in huma...

Individuals jump higher when they adopt an external focus of attention, relative to an internal focus or no focus of attention (G. Wulf, T. Zachry, C. Granados, & J. S. Dufek, 2007). In the present study, the authors determined the underlying cause of this effect. Participants performed a vertical jump-and-reach task for (a) an external focus condition (i.e., participants focused on the rungs o...

Newton, R.U., R.A. Rogers, J.S. Volek, K. Häkkinen, and W.J. Kraemer. Four weeks of optimal load ballistic resistance training at the end of season attenuates declining jump performance of women volleyball players. J. Strength Cond. Res. 20(4):955–961. 2006.—Anecdotal and research evidence is that vertical jump performance declines over the competitive volleyball season. The purpose of this stu...

The purpose of this study was to examine the effects of acute creatine-monohydrate supplementation on soccer-specific performance in young soccer players. Twenty young male soccer players (16.6 +/- 1.9 years) participated in the study and were matched and allocated to 2 randomly assigned trials: ingesting creatine-monohydrate supplement (3 x 10-g doses) or placebo for 7 days. Before and after t...