Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2003) 02, 62 - 69

Research article
Is Enhanced-Eccentric Resistance Training Superior to Traditional Training for Increasing Elbow Flexor Strength?
Ian K. Barstow1, Mark D. Bishop1, , Thomas W. Kaminski2
Author Information
1 Department of Physical Therapy, University of Florida, USA
2 Department of Sports Medicine & Athletic Training, Southwest Missouri State University, USA

Mark D. Bishop
‚úČ Department of Physiology, University of Kuopio, Kuopio, 70211 Kuopio, Finland
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Publish Date
Received: 13-01-2003
Accepted: 21-03-2003
Published (online): 01-06-2003
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ABSTRACT

Protocols for strengthening muscle are important for fitness, rehabilitation, and the prevention of myotendinous injuries. In trained individuals, the optimal method of increasing strength remains unclear. The purpose of this study was to compare the effects of a traditional method of strengthening with a method that allowed for enhanced-eccentric training, on changes in elbow flexor strength in trained subjects. Thirty-nine (8 male, 31 female) trained subjects with normal elbow function participated in this study. Subjects were rank-ordered according to isometric force production and randomly assigned to one of three training groups: control (CONT), traditional concentric/eccentric (TRAD), and concentric/enhanced-eccentric (NEG). The training groups completed 24 training sessions. An evaluator blinded to training group performed all testing. Mixed model ANOVA techniques were used to determine if differences existed in concentric one repetition maximum strength, and isometric force production among groups. Changes in peak and average isokinetic force production were also compared. Type 1 error was maintained at 5%. While both groups improved concentric one repetition maximum (NEG = 15.5%, TRAD = 13.8%) neither training group statistically differed from changes demonstrated by the CONT group. Nor did either training group show significant improvements in isometric or isokinetic force production over the CONT group. These results do not support the superiority of enhanced-eccentric training for increasing force production in trained subjects.

Key words: Concentric, specificity, negative training, one-repetition maximum, isokinetic


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