Interference between concurrent resistance and endurance exercise: molecular bases and the role of individual training variables

Fyfe, Jackson J., Bishop, David J. and Stepto, Nigel K. 2014, Interference between concurrent resistance and endurance exercise: molecular bases and the role of individual training variables, Sports medicine, vol. 44, no. 6, pp. 743-762, doi: 10.1007/s40279-014-0162-1.

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Title Interference between concurrent resistance and endurance exercise: molecular bases and the role of individual training variables
Author(s) Fyfe, Jackson J.ORCID iD for Fyfe, Jackson J.
Bishop, David J.
Stepto, Nigel K.
Journal name Sports medicine
Volume number 44
Issue number 6
Start page 743
End page 762
Total pages 20
Publisher Springer International
Place of publication Auckland, New Zealand
Publication date 2014-06
ISSN 1179-2035
Keyword(s) Adaptation, Physiological
Energy Metabolism
Muscle Fibers, Skeletal
Muscle Proteins
Muscle Strength
Muscle, Skeletal
Physical Education and Training
Physical Endurance
Resistance Training
Summary Concurrent training is defined as simultaneously incorporating both resistance and endurance exercise within a periodized training regime. Despite the potential additive benefits of combining these divergent exercise modes with regards to disease prevention and athletic performance, current evidence suggests that this approach may attenuate gains in muscle mass, strength, and power compared with undertaking resistance training alone. This has been variously described as the interference effect or concurrent training effect. In recent years, understanding of the molecular mechanisms mediating training adaptation in skeletal muscle has emerged and provided potential mechanistic insight into the concurrent training effect. Although it appears that various molecular signaling responses induced in skeletal muscle by endurance exercise can inhibit pathways regulating protein synthesis and stimulate protein breakdown, human studies to date have not observed such molecular 'interference' following acute concurrent exercise that might explain compromised muscle hypertrophy following concurrent training. However, given the multitude of potential concurrent training variables and the limitations of existing evidence, the potential roles of individual training variables in acute and chronic interference are not fully elucidated. The present review explores current evidence for the molecular basis of the specificity of training adaptation and the concurrent interference phenomenon. Additionally, insights provided by molecular and performance-based concurrent training studies regarding the role of individual training variables (i.e., within-session exercise order, between-mode recovery, endurance training volume, intensity, and modality) in the concurrent interference effect are discussed, along with the limitations of our current understanding of this complex paradigm.
Language eng
DOI 10.1007/s40279-014-0162-1
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
1106 Human Movement And Sports Science
0913 Mechanical Engineering
1302 Curriculum And Pedagogy
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Springer International Publishing Switzerland
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Document type: Journal Article
Collections: Faculty of Health
School of Exercise and Nutrition Sciences
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