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Does pre-exercise static stretching inhibit maximal muscular performance?
Nejc Šarabon, Luka Simić, Goran Marković, 2012, original scientific article

Found in: ključnih besedah
Summary of found: ...warm-up, stretch, performance, acute effects, ...
Keywords: warm-up, stretch, performance, acute effects
Published: 15.10.2013; Views: 3189; Downloads: 83
URL Full text (0,00 KB)

Introduction of dynamic rate-of-force development scaling factor in progressive drop jumps
Darjan Smajla, Dragan Mirkov, Olivera M. Knezevic, Nejc Šarabon, 2020, original scientific article

Abstract: Rapid force generation across submaximal levels has been evaluated with the rate of force development scaling factor (RFD-SF) in different isometric tasks, while such measurement was still not verified in dynamic tasks. Our study was designed to evaluate the feasibility of the RFD-SF in dynamic drop jump (DJ) task (RFD-SFDJ). A total of 55 young athletes performed isometric plantarflexion at different submaximal intensities and 60 DJs (6 different drop heights). For each participant we calculated linearity (r2 ) and slope in isometric task (RFD-SFPF), eccentric part of DJ (RFD-SFDJ-ECC) and concentric part of DJ (RFD-SFDJ-CON), as well as average jump height (DJH) from each drop height. Our results revealed strong linear force-RFD relationship for isometric plantarflexion (r2 = 0.90 % 0.06), eccentric (r2 = 0.87 % 0.09) and concentric phase of DJ (r2 = 0.80 % 0.18). Significant moderate positive correlations were calculated between RFD-SFPF and RFD-SFDJ-ECC (r = 0.311, p < 0.05) and small negative correlations between RFD-SFDJ-CON and RFD-SF (r = -0.276, p < 0.05). Significant positive moderate correlations were seen only between RFD-SFDJ-ECC and DJH from 10 cm (r = 0.459, p < 0.001) and 15 cm (r = 0.423, p < 0.01). This is the first study to introduce and confirm that RFD-SFDJ can be obtained from the multi-joint tasks (60 jumps) and still provide acceptable reliability and linear relationship. Furthermore, RFD-SFDJ may have greater practical application than RFD-SF assessed under the isometric conditions. This verification of RFD-SFDJ opens opportunities for further research regarding its practical application.
Found in: ključnih besedah
Summary of found: ...explosive strength, stretch-shortening cycle, plyometric, ankle, isometric...
Keywords: explosive strength, stretch-shortening cycle, plyometric, ankle, isometric
Published: 07.08.2020; Views: 910; Downloads: 64
URL Full text (0,00 KB)

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