Effects of different lifting cadences on ground reaction forces during the squat exercise
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Deutscher übersetzter Titel: | Auswirkungen unterschiedlicher Heberhythmen auf die Bodenreaktionskräfte während der Kniebeugeübung |
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Autor: | Bentley, Jason R.; Amonette, William E.; Witt, John K. de; Hagan, R. Donald |
Erschienen in: | Journal of strength and conditioning research |
Veröffentlicht: | 24 (2010), 5, S. 1414-1420, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 1064-8011, 1533-4287 |
DOI: | 10.1519/JSC.0b013e3181cb27e7 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201103002266 |
Quelle: | BISp |
TY - JOUR AU - Bentley, Jason R. A2 - Bentley, Jason R. A2 - Amonette, William E. A2 - Witt, John K. de A2 - Hagan, R. Donald DB - BISp DP - BISp KW - Bewegungsrhythmus KW - Bodenreaktionskraft KW - Hanteltraining KW - Kniebeuge KW - Krafttraining KW - Trainingswissenschaft LA - eng TI - Effects of different lifting cadences on ground reaction forces during the squat exercise TT - Auswirkungen unterschiedlicher Heberhythmen auf die Bodenreaktionskräfte während der Kniebeugeübung PY - 2010 N2 - The purpose of this investigation was to determine the effect of different lifting cadences on the ground reaction force (GRF) during the squat exercise. Squats performed with greater acceleration will produce greater inertial forces; however, it is not well understood how different squat cadences affect GRF. The hypotheses were that faster squat cadences would result in greater peak GRF and that the contributions of the body and barbell, both of equivalent mass, to total system inertial force would not be different. Six experienced male subjects (31 ± 4 years, 180 ± 9 cm, 88.8 ± 13.3 kg) performed 3 sets of 3 squats using 3 different cadences (fast cadence [FC] = 1-second descent/1-second ascent; medium cadence [MC] = 3-second descent/1-second ascent; and slow cadence [SC] = 4-second descent/2-second ascent) while lifting a barbell mass equal to their body mass. Ground reaction force and velocity sensor data were used to calculate inertial force contributions of both the body and barbell to total inertial force. Peak GRF were significantly higher in FC squats compared to MC (p = 0.0002) and SC (p = 0.0002). Ranges of GRF were also significantly higher in FC compared to MC (p < 0.05) and higher in MC compared to SC (p < 0.05). The inertial forces associated with the body were larger than those associated with the barbell, regardless of cadence. Faster squat cadences result in significantly greater peak GRF as a result of the inertia of the system. This study demonstrates that GRF was more dependent on descent cadence than on ascent cadence and that researchers should not use a single point on the body to approximate the location of the center of mass during squat exercise analysis. Verf.-Referat L2 - https://dx.doi.org/10.1519/JSC.0b013e3181cb27e7 DO - 10.1519/JSC.0b013e3181cb27e7 SP - S. 1414-1420 SN - 1064-8011 JO - Journal of strength and conditioning research IS - 5 VL - 24 M3 - Gedruckte Ressource M3 - Elektronische Ressource (online) ID - PU201103002266 ER -