Cited by 73Sports Performance and TrainingCardiovascular and exercise physiologyMuscle metabolism and nutrition

Performance and neuromuscular adaptations following differing ratios of concurrent strength and endurance training

Jones, Thomas W., Howatson, Glyn, Russell, Mark, French, Duncan N.·2013·Journal of Strength and Conditioning Research

Abstract

The interference effect attenuates strength and hypertrophic responses when strength and endurance training are conducted concurrently; however, the influence of training frequency on these responses remain unclear when varying ratios of concurrent strength and endurance training are performed. Therefore, the purpose of the study was to examine the strength, limb girth, and neuromuscular adaptations to varying ratios of concurrent strength and endurance training. Twenty-four men with >2 years resistance training experience completed 6 weeks of 3 days per week of (a) strength training (ST), (b) concurrent strength and endurance training ratio 3:1 (CT3), (c) concurrent strength and endurance training ratio 1:1 (CT1), or (d) no training (CON) in an isolated limb model. Assessments of maximal voluntary contraction by means of isokinetic dynamometry leg extensions (maximum voluntary suppression [MVC]), limb girth, and neuromuscular responses through electromyography (EMG) were conducted at baseline, mid-intervention, and postintervention. After training, ST and CT3 conditions elicited greater MVC increases than CT1 and CON conditions (p ≤ 0.05). Strength training resulted in significantly greater increases in limb girth than both CT1 and CON conditions (p = 0.05 and 0.004, respectively). The CT3 induced significantly greater limb girth adaptations than CON condition (p = 0.04). No effect of time or intervention was observed for EMG (p > 0.05). In conclusion, greater frequencies of endurance training performed increased the magnitude of the interference response on strength and limb girth responses after 6 weeks of 3 days a week of training. Therefore, the frequency of endurance training should remain low if the primary focus of the training intervention is strength and hypertrophy.

Integrity signals

Registry

Crossref · 10.1519/jsc.0b013e3181b2cf39

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Jones, T. W., Howatson, G., Russell, M., & French, D. N.
Affiliations
  • North-West University (ZA)
  • Northumbria University (GB)
Corresponding author
French, Duncan N.
Venue
Journal of Strength and Conditioning Research
Published
2013-12
Volume
27
Issue
12
Pages
3342-3351
ISSN
1064-8011 (ISSN-L)
OpenAlex
W1999755109
Cited by
73
References
46
Citations by year
2026: 1 · 2025: 7 · 2024: 5 · 2023: 6 · 2022: 7 · 2021: 6 · 2020: 5 · 2019: 9 · 2018: 9 · 2017: 4 · 2016: 5 · 2015: 7 · 2014: 1 · 2013: 1
FWCI
4.77
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Strength and Conditioning Research (publishedVersion)
  • PubMed (publishedVersion)
  • Northumbria Research Link (Northumbria University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
interference effects, exercise frequency, resistance training, endurance training, muscle hypertrophy, limb girth, neuromuscular adaptation, electromyography, isokinetic leg extension
MeSH terms
Adaptation, Physiological, Adult, Electromyography, Humans, Male, Models, Biological, Muscle Contraction, Physical Endurance, Quadriceps Muscle, Muscle Strength, Muscle Strength Dynamometer, Resistance Training

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review