Effects of loading on maximum vertical jumps: Selective effects of weight and inertia
Autor: | Dusan Ugarkovic, Predrag R. Bozic, Nemanja Pazin, Milos Kukolj, Slobodan Jaric, Bojan Leontijević |
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Rok vydání: | 2012 |
Předmět: |
Adult
Male Materials science Movement media_common.quotation_subject Biophysics Neuroscience (miscellaneous) Kinematics Inertia medicine.disease_cause Article Weight-bearing Weight-Bearing Young Adult 03 medical and health sciences 0302 clinical medicine Jumping Control theory medicine Range (statistics) Humans Ground reaction force media_common Analysis of Variance 030229 sport sciences Mechanics Biomechanical Phenomena Power (physics) Lower Extremity Neurology (clinical) Maxima 030217 neurology & neurosurgery |
Zdroj: | Journal of Electromyography and Kinesiology. 22:286-293 |
ISSN: | 1050-6411 |
Popis: | A novel loading method was applied to explore selective effects of externally added weight ( W ), weight and inertia ( W + I ), and inertia ( I ) on maximum counter-movement jumps (CMJ) performed with arm swing. Externally applied extended rubber bands and/or loaded vest added W , W + I , and I corresponding to 10–40% of subjects' body mass. As expected, an increase in magnitude of all types of load was associated with an increase in ground reaction forces (GRF), as well as with a decrease in both the jumping performance and power output. However, of more importance could be that discernible differences among the effects of W , W + I , and I were recorded despite a relatively narrow loading range. In particular, an increase in W was associated with the minimal changes in movement kinematic pattern and smallest reduction of jumping performance, while also allowing for the highest power output. Conversely, W + I was associated with the highest ground reaction forces. Finally, the lowest maxima of GRF and power were associated with I . Although further research is apparently needed, the obtained finding could be of potential importance not only for understanding fundamental properties of the neuromuscular system, but also for optimization of loading in standard athletic training and rehabilitation procedures. |
Databáze: | OpenAIRE |
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