Evidence map›Paper›PMID 22892413›Full record

ArticleJournal of athletic training

Muscle imbalance among elite Australian rules football players: a longitudinal study of changes in trunk muscle size.

Julie Hides, Warren Stanton

Open access · bronzeAbstract read
In one paragraph

Article in Journal of athletic training. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
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

8 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Article
  3. Effects of Wuqinxi in the Patients with Chronic Low Back Pain: A Randomized Controlled Trial.Evidence-based complementary and alternative medicine : eCAM · 2020
    Article
  4. Article
  5. Article
  6. Article
  7. Changes in multifidus and abdominal muscle size in response to microgravity: possible implications for low back pain research.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2016
    Article
  8. Article
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

2 authors at 1 institution in 1 country.

Julie HidesSchool of Physiotherapy, Australian Catholic University, Banyo, Queensland 4014, Australia. julie.hides@acu.edu.au
Warren Stanton
Australian Catholic University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextTrunk muscles, such as the transversus abdominis (TrA) and multifidus, play a key role in lumbopelvic stability, which is important in athletic performance. Asymmetry or imbalance in these and other trunk muscles could result from the specific requirements of the game of Australian rules football.

objectiveTo determine whether seasonal variations in the sizes of key trunk muscles associated with lumbopelvic stability occur in Australian Football League players.

designCross-sectional study.

settingHospital. PATIENTS OR OTHER

participantsThe number of players eligible to participate at each of the 4 time points was 36 at the start of preseason 1 (T1), 31 at end of season 1 (T2), 43 at the end of preseason 2 (T3), and 41 at the start of preseason 3 (T4). The group with data at all 4 time points (n = 20) was used in the analyses and was shown to be representative of the total sample. INTERVENTION(S): Magnetic resonance imaging was used to determine the cross-sectional areas (CSAs) of the multifidus (vertebral levels L2 to L5) and lumbar erector spinae (LES) muscles (L3), as well as the thickness of the TrA and internal oblique (IO) muscles at L3. MAIN OUTCOME MEASURE(S): Cross-sectional areas of the multifidus and LES muscles and thickness of the TrA and IO muscles.

resultsBy the end of the playing season, results showed 11.1% atrophy for multifidus CSA at L3 and 21% atrophy for TrA thickness at rest. In comparison, the CSA of the LES muscles increased by 3.6%, and the thickness of the IO muscle increased by 11.8% compared with the start of the preseason.

conclusionsThe results indicated an imbalance of the key muscles associated with lumbopelvic stability.

Indexed as

FootballAbdominal MusclesAthletesAustraliaCross-Sectional StudiesHumansLongitudinal StudiesLumbosacral RegionMagnetic Resonance ImagingMuscle ContractionMuscle, SkeletalMuscle StrengthSeasons

Identifiers

PMID22892413
PMCPMC3392162
OpenAlexW2101569011

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.