Evidence map›Paper›PMID 34784926›Full record

ArticleJournal of the International Society of Sports Nutrition2021

Association of energy availability with resting metabolic rates in competitive female teenage runners: a cross-sectional study.

Norimitsu Kinoshita, Eriko Uchiyama, Kazuko Ishikawa-Takata, Yuka Yamada, Kenta Okuyama

Abstract read
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In one paragraph

Article in Journal of the International Society of Sports Nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

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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

5 authors.

Norimitsu KinoshitaFaculty of Sports and Health Studies, Hosei University, 4342 Aihara, Tokyo, 194-0298, Machida, Japan. sportsmed.kinoshita@hosei.ac.jp.
Eriko UchiyamaFaculty of Sports and Health Studies, Hosei University, 4342 Aihara, Tokyo, 194-0298, Machida, Japan.
Kazuko Ishikawa-TakataHealth and Nutrition, National Institutes of Biomedical Innovation, 1-23-1 Toyama, Tokyo, 162-8636, Shinjuku, Japan.
Yuka YamadaHealth and Nutrition, National Institutes of Biomedical Innovation, 1-23-1 Toyama, Tokyo, 162-8636, Shinjuku, Japan.
Kenta OkuyamaCenter for Primary Health Care Research, Department of Clinical Sciences Malmö, Lund University, Jan Waldenströms Gata 35, 20502, Malmö, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundResting metabolic rate (RMR) has been examined as a proxy for low energy availability (EA). Previous studies have been limited to adult athletes, despite the serious health consequences of low EA, particularly during adolescence. This study aimed to explore the relationship between RMR and EA in competitive teenage girl runners.

methodsEighteen girl runners (mean ± standard-deviation; age, 16.8 ± 0.9 years; body mass, 45.6 ± 5.2 kg, %fat, 13.5 ± 4.2 %) in the same competitive high-school team were evaluated. Each runner was asked to report dietary records with photos and training logs for seven days. Energy intake (EI) was assessed by Registered Dietitian Nutritionists. The runners were evaluated on a treadmill with an indirect calorimeter to yield individual prediction equations for oxygen consumption using running velocity and heart rate (HR). Exercise energy expenditure (EEE) was calculated by the equations based on training logs and HR. Daily EA was calculated by subtracting EEE from EI. The daily means of these variables were calculated. RMR was measured early in the morning by whole-room calorimetry after overnight sleep on concluding the final day of the seven-day assessment. The ratio of measured RMR to predicted RMR (RMR ratio) was calculated by race, age, sex-specific formulae, and Cunningham's equation. Body composition was measured using dual-energy X-ray absorptiometry. Bivariate correlation analyses were used to examine the relationship between variables.

resultsRMR, EI, EEE, and EA were 26.9 ± 2.4, 56.8 ± 15.2, 21.7 ± 5.9, and 35.0 ± 15.0 kcal⋅kg

conclusionsThese results suggest that RMR does not reduce with a decrease in EA among highly competitive and lean teenage girl runners. RMR remains disproportionally higher than expected in low EA states. Free-living teenage girl runners with low EA should be cautiously identified using RMR as a proxy for EA change.

Indexed as

Basal MetabolismEnergy IntakeAdolescentAthletesBody CompositionCalorimetry, IndirectCross-Sectional StudiesEnergy MetabolismFemaleHumansRunningAdaptive thermogenesisAdolescenceDual-energy X-ray absorptiometryFemale athlete triadLong-distance runningWhole room calorimeter

Identifiers

PMID34784926
PMCPMC8594218

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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.