Evidence map›Paper›PMID 17024467›Full record

ArticleMedical & biological engineering & computing2006

Adaptive potential of human biceps femoris muscle demonstrated by histochemical, immunohistochemical and mechanomyographical methods.

Raja Dahmane, Srdjan Djordjevic, Vika Smerdu

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In one paragraph

Article in Medical & biological engineering & computing, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  3. Review
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4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

3 authors.

Raja DahmaneInstitute of Anatomy, Medical Faculty, University of Ljubljana, Korytkova 2, Ljubljana, Slovenia. raja.dahmane@guest.arnes.si
Srdjan Djordjevic
Vika Smerdu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The goal of this study was to estimate the ability of biceps femoris (BF) muscle, a hamstring muscle crucial for biarticulate movement, to adapt to changed functional demands. For this purpose and due to ethical reasons, in a group of healthy sedentary men and of 15 sprinters, a non-invasive mechanomyography (MMG) method was used to measure the muscle twitch contraction times (Tc). These correlate with the proportions of slow and fast fibres in the muscle. To further elucidate the data obtained by MMG method and to obtain reference data for the muscle, the fiber type proportions in autoptic samples of BF in sedentary young men were determined according to histochemical reaction for myofibrillar adenosine triphosphatase (mATPase). In one BF sample also myosin heavy chain (MyHC) isoform expression was demonstrated immunohistochemically. With MMG we indirectly demonstrated that biceps femoris muscle has a strong potential to transform into faster contracting muscle after sprint training, since the average Tc in sprinters was much lower (19.5 +/- 2.3 ms) than in the sedentary group (30.25 +/- 3.5 ms). The results of the histochemical and immunohistochemical analysis of BF muscle also imply a high adapting potential of this muscle. Beside type 1, 2a and 2x (2b) fibres a relatively high proportion of intermediate type 2c fibres (5.7% +/- 0.7), which co-expressed MyHC-1 and -2a, was found. Therefore, type 2c might represent a potential pool of fibres, capable of transformation either to slow type 1 or to fast type 2a in order to tune the functional response of BF muscle according to the actual functional demands of the organism.

Indexed as

Adaptation, PhysiologicalRunningAdenosine TriphosphatasesAdultCase-Control StudiesHistocytochemistryHumansImmunohistochemistryMaleMuscle ContractionMuscle Fibers, Fast-TwitchMuscle, SkeletalMyographyMyosin Heavy ChainsPhysical Education and TrainingAdenosine TriphosphatasesMyosin Heavy Chains

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.