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Effect of contraction mode of slow‐speed resistance training on the maximum rate of force development in the human quadriceps
Author(s) -
Blazevich Anthony J.,
Horne Sara,
Cannavan Dale,
Coleman David R.,
Aagaard Per
Publication year - 2008
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.21021
Subject(s) - isometric exercise , concentric , eccentric , medicine , resistance training , contraction (grammar) , muscle contraction , electromyography , physical medicine and rehabilitation , cardiology , physical therapy , anesthesia , mathematics , physics , geometry , quantum mechanics
This study examined the effects of slow‐speed resistance training involving concentric (CON, n = 10) versus eccentric (ECC, n = 11) single‐joint muscle contractions on contractile rate of force development (RFD) and neuromuscular activity (EMG), and its maintenance through detraining. Isokinetic knee extension training was performed 3 · week −1 for 10 weeks. Maximal isometric strength (+11.2%) and RFD (measured from 0–30/50/100/200 ms, respectively; +10.5%–20.5%) increased after 10 weeks ( P < 0.01–0.05); however, there was no effect of training mode. Peak EMG amplitude and rate of EMG rise were not significantly altered with training or detraining. Subjects with below‐median normalized RFD (RFD/MVC) at 0 weeks significantly increased RFD after 5‐ and 10‐weeks training, which was associated with increased neuromuscular activity. Subjects who maintained their higher RFD after detraining also exhibited higher activity at detraining. Thus, only subjects with a lesser ability to rapidly attain their maximum force before training improved RFD with slow‐speed resistance exercise. Muscle Nerve, 2008