Accentuated Eccentric Loading for Training and Performance: A Review

Accentuated eccentric loading (AEL) prescribes eccentric load magnitude in excess of the concentric prescription using movements that require coupled eccentric and concentric actions, with minimal interruption to natural mechanics. This method has been theorized to potentiate concentric performance...

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Bibliographic Details
Published in:Sports medicine (Auckland) 2017-12, Vol.47 (12), p.2473-2495
Main Authors: Wagle, John P., Taber, Christopher B., Cunanan, Aaron J., Bingham, Garett E., Carroll, Kevin M., DeWeese, Brad H., Sato, Kimitake, Stone, Michael H.
Format: Article
Language:English
Subjects:
Adaptation
Adaptation, Physiological - physiology
Athletic Performance - physiology
Athletic recruitment
Eccentricity
Exercise - physiology
Gene expression
Humans
Insulin-like growth factors
Isoforms
Load
Male
Medicine
Medicine & Public Health
Methods
Muscle Contraction - physiology
Muscle, Skeletal - anatomy & histology
Muscle, Skeletal - physiology
Muscles
Musculoskeletal system
Myosin
Physical Education and Training - methods
Researchers
Review Article
Sports Medicine
Strength training
Weight-Bearing - physiology
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Summary:Accentuated eccentric loading (AEL) prescribes eccentric load magnitude in excess of the concentric prescription using movements that require coupled eccentric and concentric actions, with minimal interruption to natural mechanics. This method has been theorized to potentiate concentric performance through higher eccentric loading and, thus, higher concentric force production. There is also evidence for favorable chronic adaptations, namely shifts to faster myosin heavy chain isoforms and changes in IIx-specific muscle cross-sectional area. However, research concerning the acute and chronic responses to AEL is inconclusive, likely due to inconsistencies in subjects, exercise selection, load prescription, and method of providing AEL. Therefore, the purpose of this review is to summarize: (1) the magnitudes and methods of AEL application; (2) the acute and chronic implications of AEL as a means to enhance force production; (3) the potential mechanisms by which AEL enhances acute and chronic performance; and (4) the limitations of current research and the potential for future study.
ISSN:0112-1642
1179-2035
DOI:10.1007/s40279-017-0755-6