Evidence map›Paper›PMID 15335243›Full record

ReviewSports medicine (Auckland, N.Z.)2004

The role of resistance exercise intensity on muscle fibre adaptations.

Andrew C Fry

Registry-linked trialAbstract readReview
PubMed Publisher
In one paragraph

Review in Sports medicine (Auckland, N.Z.), 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03779737 (Muscular Strength and Aerobic Capacity, a Symbiotic Relationship With Birth Weight and Metabolic Risk of Colombian Scholchildren), which is not on this map. Cited by 205 papers, 12 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
205citing papers in PubMed, 12 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03779737 nacompletednot on this mapstarted 2016, after this paper: background citation

Muscular Strength and Aerobic Capacity, a Symbiotic Relationship With Birth Weight and Metabolic Risk of Colombian Scholchildren: Study SIMAC

TypeinterventionalSponsorFundación Oftalmológica de Santander Clínica Carlos Ardila LulleRan2016 to 2016Enrolled150ConditionsResistance Training, Cardiovascular Risk, Low Birth WeightArmsMuscular Resistance training, Cardiorespiratory training, Habitual training
3 · Its place in the literature

Who cites it

205 citing papers in PubMed, 12 syntheses or guidelines pooled it.

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145 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author.

Andrew C FryHuman Performance Laboratories, The University of Memphis, Memphis, Tennessee 38152, USA. afry@memphis.edu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although many training variables contribute to the performance, cellular and molecular adaptations to resistance exercise, relative intensity (% 1 repetition maximum [%1RM]) appears to be an important factor. This review summarises and analyses data from numerous resistance exercise training studies that have monitored percentage fibre type, fibre type cross-sectional areas, percentage cross-sectional areas, and myosin heavy chain (MHC) isoform expression. In general, relative intensity appears to account for 18-35% of the variance for the hypertrophy response to resistance exercise. On the other hand, fibre type and MHC transitions were not related to the relative intensity used for training. When competitive lifters were compared, those typically utilising the heaviest loads (> or =90% 1RM), that is weightlifters and powerlifters, exhibited a preferential hypertrophy of type II fibres when compared with body builders who appear to equally hypertrophy both type I and type II fibres. These data suggest that maximal hypertrophy occurs with loads from 80-95% 1RM.

Indexed as

Adaptation, PhysiologicalBody CompositionExerciseHumansHypertrophyMuscle ContractionMuscle DevelopmentMuscle Fibers, SkeletalMuscle, SkeletalWeight Lifting

Identifiers

PMID15335243

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.