Evidence map›Paper›PMID 29371857›Full record

ArticleJournal of the International Society of Sports Nutrition2018

Nutritional strategies of high level natural bodybuilders during competition preparation.

A J Chappell, T Simper, M E Barker

Abstract read
In one paragraph

Article in Journal of the International Society of Sports Nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–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

35 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. The Use of Anabolic Steroids by Bodybuilders in the State of Sergipe, Brazil.European journal of investigation in health, psychology and education · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Premature Death in Bodybuilders: What Do We Know?Sports medicine (Auckland, N.Z.) · 2023
    Article
  16. Article
  17. Observational
  18. Article
  19. Nutritional and Non-Nutritional Strategies in Bodybuilding: Impact on Kidney Function.International journal of environmental research and public health · 2022
    Review
  20. 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

3 authors.

A J ChappellFood and Nutrition Group, Sheffield Business School, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB UK.ORCID 0000-0003-3999-9395
T SimperFood and Nutrition Group, Sheffield Business School, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB UK.
M E BarkerFood and Nutrition Group, Sheffield Business School, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCompetitive bodybuilders employ a combination of resistance training, cardiovascular exercise, calorie reduction, supplementation regimes and peaking strategies in order to lose fat mass and maintain fat free mass. Although recommendations exist for contest preparation, applied research is limited and data on the contest preparation regimes of bodybuilders are restricted to case studies or small cohorts. Moreover, the influence of different nutritional strategies on competitive outcome is unknown.

methodsFifty-one competitors (35 male and 16 female) volunteered to take part in this project. The British Natural Bodybuilding Federation (BNBF) runs an annual national competition for high level bodybuilders; competitors must qualify by winning at a qualifying events or may be invited at the judge's discretion. Competitors are subject to stringent drug testing and have to undergo a polygraph test. Study of this cohort provides an opportunity to examine the dietary practices of high level natural bodybuilders. We report the results of a cross-sectional study of bodybuilders competing at the BNBF finals. Volunteers completed a 34-item questionnaire assessing diet at three time points. At each time point participants recorded food intake over a 24-h period in grams and/or portions. Competitors were categorised according to contest placing. A "placed" competitor finished in the top 5, and a "Non-placed" (DNP) competitor finished outside the top 5. Nutrient analysis was performed using Nutritics software. Repeated measures ANOVA and effect sizes (Cohen's

resultsMean preparation time for a competitor was 22 ± 9 weeks. Nutrient intake of bodybuilders reflected a high-protein, high-carbohydrate, low-fat diet. Total carbohydrate, protein and fat intakes decreased over time in both male and female cohorts (

conclusionsGreater carbohydrate intake in the placed competitors could theoretically have contributed towards greater maintenance of muscle mass during competition preparation compared to DNP competitors. These findings require corroboration, but will likely be of interest to bodybuilders and coaches.

Indexed as

DietSports Nutritional Physiological PhenomenaAdultCross-Sectional StudiesDietary CarbohydratesDietary SupplementsDiet, Fat-RestrictedDiet, High-ProteinDiet SurveysFemaleHumansMaleMiddle AgedWeight LiftingYoung AdultDietary CarbohydratesBodybuildersCaloriesCompetitionContest preparationDietingEnergy restrictionNaturalNutritionPhysiqueSupplementation

Identifiers

PMID29371857
PMCPMC5769537

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.