Selective effects of weight and inertia on maximum lifting
Autor: | Dusan Ugarkovic, Milos Kukolj, Slobodan Jaric, Bojan Leontijević, Nemanja Pazin |
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Rok vydání: | 2012 |
Předmět: |
Adult
Male Weight Lifting media_common.quotation_subject Peak power output Physical Therapy Sports Therapy and Rehabilitation 030204 cardiovascular system & hematology Athletic Performance Inertia medicine.disease_cause Bench press Weight-bearing Weight-Bearing 03 medical and health sciences Young Adult 0302 clinical medicine Natural rubber medicine Humans Orthopedics and Sports Medicine Muscle Strength Composite material Mathematics media_common Resistance Training 030229 sport sciences Biomechanical Phenomena Peak velocity Muscle power visual_art External resistance visual_art.visual_art_medium |
Zdroj: | International journal of sports medicine. 34(3) |
ISSN: | 1439-3964 |
Popis: | A novel loading method (loading ranged from 20% to 80% of 1RM) was applied to explore the selective effects of externally added simulated weight (exerted by stretched rubber bands pulling downward), weight+inertia (external weights added), and inertia (covariation of the weights and the rubber bands pulling upward) on maximum bench press throws. 14 skilled participants revealed a load associated decrease in peak velocity that was the least associated with an increase in weight (42%) and the most associated with weight+inertia (66%). However, the peak lifting force increased markedly with an increase in both weight (151%) and weight+inertia (160%), but not with inertia (13%). As a consequence, the peak power output increased most with weight (59%), weight+inertia revealed a maximum at intermediate loads (23%), while inertia was associated with a gradual decrease in the peak power output (42%). The obtained findings could be of importance for our understanding of mechanical properties of human muscular system when acting against different types of external resistance. Regarding the possible application in standard athletic training and rehabilitation procedures, the results speak in favor of applying extended elastic bands which provide higher movement velocity and muscle power output than the usually applied weights. |
Databáze: | OpenAIRE |
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