Evidence map›Paper›PMID 29701639›Full record

ArticleNutrients2018

Energy Deficit Required for Rapid Weight Loss in Elite Collegiate Wrestlers.

Emi Kondo, Hiroyuki Sagayama, Yosuke Yamada, Keisuke Shiose, Takuya Osawa, Keiko Motonaga, Shiori Ouchi, Akiko Kamei, Kohei Nakajima, Yasuki Higaki and 3 more

Abstract readComparative Study
In one paragraph

Article in Nutrients, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

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

  1. Pooled it
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  10. Development and validation of a food frequency questionnaire for Japanese athletes (FFQJA).Journal of the International Society of Sports Nutrition · 2021
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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

13 authors.

Emi KondoJapan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan. emi.kondo@jpnsport.go.jp.ORCID 0000-0001-9145-0549
Hiroyuki SagayamaJapan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan. hiroyuki.sagayama@jpnsport.go.jp.
Yosuke YamadaNational Institutes of Biomedical Innovation, Health and Nutrition, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8636, Japan. yamaday@nibiohn.go.jp.ORCID 0000-0002-4284-6317
Keisuke ShioseFaculty of Sports and Health Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan. shiose@fukuoka-u.ac.jp.ORCID 0000-0003-1089-9593
Takuya OsawaDepartment of Sports Wellness Sciences, Japan Women's College of Physical Education, 8-19-1, Kitakarasuyama, Setagaya-ku, Tokyo 157-8565, Japan. takuya.osawa.jp@gmail.com.
Keiko MotonagaJapan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan. keiko.motonaga@jpnsport.go.jp.
Shiori OuchiJapan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan. ouchi.shiori@gmail.com.
Akiko KameiJapan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan. akiko.kamei@jpnsport.go.jp.
Kohei NakajimaJapan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan. kohei.nakajima@jpnsport.go.jp.
Yasuki HigakiFaculty of Sports and Health Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan. higaki@fukuoka-u.ac.jp.
Hiroaki TanakaFaculty of Sports and Health Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan. htanaka@fukuoka-u.ac.jp.
Hideyuki TakahashiJapan Institute of Sports Sciences, 3-15-1 Nishigaoka, Kita-ku, Tokyo 115-0056, Japan. hideyuki.takahashi@jpnsport.go.jp.
Koji OkamuraGraduate School of Sport and Exercise Sciences, Osaka University of Health and Sport Sciences, 1-1, Asashirodai, Kumatori-cho, Sennan-gun, Osaka 590-0496, Japan. okamura@ouhs.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To determine energy density for rapid weight loss (RWL) of weight-classified sports, eight male elite wrestlers were instructed to lose 6% of body mass (BM) within 53 h. Energy deficit during the RWL was calculated by subtracting total energy expenditure (TEE) determined using the doubly labeled water method (DLW) from energy intake (EI) assessed with diet records. It was also estimated from body composition change estimated with the four-component model (4C) and other conventional methods. BM decreased significantly by 4.7 ± 0.5 kg (6.4 ± 0.5%). Total body water loss was the major component of the BM loss (71.0 ± 7.6%). TEE was 9446 ± 1422 kcal, and EI was 2366 ± 1184 kcal during the RWL of 53-h; therefore, the energy deficit was 7080 ± 1525 kcal. Thus, energy density was 1507 ± 279 kcal/kg ∆BM during the RWL, comparable with values obtained using the 4C, three-component model, dual energy X-ray absorptiometry, and stable isotope dilution. Energy density for RWL of wrestlers is lower than that commonly used (7400 or 7700 kcal/kg ΔBM). Although RWL is not recommended, we propose that commonly practiced extreme energy restriction such as 7400 or 7700 kcal/kg ΔBM during RWL appears to be meaningless.

Indexed as

AthletesCaloric RestrictionEnergy MetabolismStudentsWeight LossWrestlingAbsorptiometry, PhotonBody CompositionElectric ImpedanceHumansIndicator Dilution TechniquesIsotope LabelingMalePlethysmographyReproducibility of ResultsTime Factorsbody compositiondoubly labeled waterenergy balancemulti-component modelweight loss

Identifiers

PMID29701639
PMCPMC5986416

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Registered trials

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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.