Evidence map›Paper›PMID 37342913›Full record

Observational studyJournal of the International Society of Sports Nutrition2023

Nutritional intake and anthropometric characteristics are associated with endurance performance and markers of low energy availability in young female cross-country skiers.

Oona Kettunen, Ritva Mikkonen, Vesa Linnamo, Jaakko Mursu, Heikki Kyröläinen, Johanna K Ihalainen

Open access · goldAbstract readObservational Study
PubMed Full text at PMC Publisher
In one paragraph

Observational study in Journal of the International Society of Sports Nutrition, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 2 pooled it
0.8field-weighted citation impact, top 28% 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

5 citing papers in PubMed, 2 syntheses or guidelines pooled it, 4 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. 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

6 authors at 1 institution in 1 country.

Oona KettunenFaculty of Sport and Health Sciences, University of Jyväskylä, Vuokatti, Finland.ORCID 0000-0002-8185-4942
Ritva MikkonenFaculty of Sport and Health Sciences, University of Jyväskylä, Vuokatti, Finland.ORCID 0000-0002-5668-2202
Vesa LinnamoFaculty of Sport and Health Sciences, University of Jyväskylä, Vuokatti, Finland.
Jaakko MursuFaculty of Sport and Health Sciences, University of Jyväskylä, Vuokatti, Finland.
Heikki KyröläinenFaculty of Sport and Health Sciences, University of Jyväskylä, Vuokatti, Finland.ORCID 0000-0003-3822-1733
Johanna K IhalainenFaculty of Sport and Health Sciences, University of Jyväskylä, Vuokatti, Finland.ORCID 0000-0001-9428-4689
University of Jyväskylä · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLow energy availability (LEA) can have negative performance consequences, but the relationships between LEA and performance are poorly understood especially in field conditions. In addition, little is known about the contribution of macronutrients to long-term performance. Therefore, the aim of this study was to evaluate if energy availability (EA) and macronutrient intake in a field-based situation were associated with laboratory-measured performance, anthropometric characteristics, blood markers, training volume, and/or questionnaire-assessed risk of LEA in young female cross-country (XC) skiers. In addition, the study aimed to clarify which factors explained performance.

methodsDuring a one-year observational study, 23 highly trained female XC skiers and biathletes (age 17.1 ± 1.0 years) completed 3-day food and training logs on four occasions (September-October, February-March, April-May, July-August). Mean (±SD) EA and macronutrient intake from these 12 days were calculated to describe yearly overall practices. Laboratory measurements (body composition with bioimpedance, blood hormone concentrations, maximal oxygen uptake (VO

resultsThe 12-day mean EA (37.4 ± 9.1 kcal·kg FFM

conclusionsF%, and training volume were the most important factors explaining performance in young female XC skiers. Notably, lower F% was associated with higher macronutrient intake, suggesting that restricting nutritional intake may not be a good strategy to modify body composition in young female athletes. In addition, lower overall CHO intake and EA increased risk of LEA determined by LEAF-Q. These findings highlight the importance of adequate nutritional intake to support performance and overall health.

Indexed as

EatingNutritional StatusAdolescentAnthropometryEnergy IntakeFemaleHumansLactic AcidOxygenLactic AcidOxygenCarbohydratefatmacronutrientproteinsports nutritionVO2max

Identifiers

PMID37342913
PMCPMC10286690
OpenAlexW4381549629

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.