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European Journal of Applied Physiology

Erschienen in:

01.11.2010 | Original Article

Flywheel resistance training calls for greater eccentric muscle activation than weight training

verfasst von: Lena Norrbrand, Marco Pozzo, Per A. Tesch

Erschienen in: European Journal of Applied Physiology | Ausgabe 5/2010

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Abstract

Changes in muscle activation and performance were studied in healthy men in response to 5 weeks of resistance training with or without “eccentric overload”. Subjects, assigned to either weight stack (grp WS; n = 8) or iso-inertial “eccentric overload” flywheel (grp FW; n = 9) knee extensor resistance training, completed 12 sessions of four sets of seven concentric–eccentric actions. Pre- and post-measurements comprised maximal voluntary contraction (MVC), rate of force development (RFD) and training mode-specific force. Root mean square electromyographic (EMG_RMS) activity of mm. vastus lateralis and medialis was assessed during MVC and used to normalize EMG_RMS for training mode-specific concentric (EMG_CON) and eccentric (EMG_ECC) actions at 90°, 120° and 150° knee joint angles. Grp FW showed greater (p < 0.05) overall normalized angle-specific EMG_ECC of vastii muscles compared with grp WS. Grp FW showed near maximal normalized EMG_CON both pre- and post-training. EMG_CON for Grp WS was near maximal only post-training. While RFD was unchanged following training (p > 0.05), MVC and training-specific strength increased (p < 0.05) in both groups. We believe the higher EMG_ECC activity noted with FW exercise compared to standard weight lifting could be attributed to its unique iso-inertial loading features. Hence, the resulting greater mechanical stress may explain the robust muscle hypertrophy reported earlier in response to flywheel resistance training.

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Titel: Flywheel resistance training calls for greater eccentric muscle activation than weight training
verfasst von: Lena Norrbrand
Marco Pozzo
Per A. Tesch
Publikationsdatum: 01.11.2010
Verlag: Springer-Verlag
Erschienen in: European Journal of Applied Physiology / Ausgabe 5/2010
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-010-1575-7

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