Evidence map›Paper›PMID 37521099›Full record

ArticleFrontiers in sports and active living2023

Gut microbiota alternation with training periodization and physical fitness in Japanese elite athletes.

Nobuhiko Akazawa, Mariko Nakamura, Nobuhiko Eda, Haruka Murakami, Takashi Nakagata, Hinako Nanri, Jonguk Park, Koji Hosomi, Kenji Mizuguchi, Jun Kunisawa and 2 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in sports and active living, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
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  7. Training load influences gut microbiome of highly trained rowing athletes.Journal of the International Society of Sports Nutrition · 2025
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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

12 authors at 5 institutions in 1 country.

Nobuhiko AkazawaDepartment of Sports Research, Japan Institute of Sports Sciences, Tokyo, Japan.
Mariko NakamuraDepartment of Sports Sciences, Japan Institute of Sports Sciences, Tokyo, Japan.
Nobuhiko EdaDepartment of Sports Research, Japan Institute of Sports Sciences, Tokyo, Japan.
Haruka MurakamiDepartment of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan.
Takashi NakagataDepartment of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan.
Hinako NanriDepartment of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan.
Jonguk ParkArtificial Intelligence Center for Health and Biomedical Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan.
Koji HosomiLaboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan.
Kenji MizuguchiArtificial Intelligence Center for Health and Biomedical Research, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan.
Jun KunisawaLaboratory of Vaccine Materials and Laboratory of Gut Environmental System, Microbial Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan.
Motohiko MiyachiFaculty of Sport Sciences, Waseda University, Saitama, Japan.
Masako HoshikawaDepartment of Sports Research, Japan Institute of Sports Sciences, Tokyo, Japan.
National Institute of Biomedical Innovation, Health and Nutrition · JPJapan Sport Council · JPWaseda University · JPDokkyo Medical University · JPProtein Research Foundation · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: The gut microbiome plays a fundamental role in host homeostasis through regulating immune functions, enzyme activity, and hormone secretion. Exercise is associated with changes in gut microbiome composition and function. However, few studies have investigated the gut microbiome during training periodization. The present study aimed to investigate the relationship between training periodization and the gut microbiome in elite athletes. Methods: In total, 84 elite athletes participated in the cross-sectional study; and gut microbiome was determined during their transition or preparation season period. Further, 10 short-track speed skate athletes participated in the longitudinal study, which assessed the gut microbiome and physical fitness such as aerobic capacity and anaerobic power in the general and specific preparation phase of training periodization. The gut microbiome was analyzed using 16S rRNA sequencing. Results: The cross-sectional study revealed significant differences in Discussion: These findings suggest that periodization alters the gut microbiome abundance related to energy metabolism and trainability of physical fitness. Athlete's condition may thus be mediated to some extent by the microbiota in the intestinal environment.

Indexed as

athletefitnessgut microbiotastool conditiontraining season

Identifiers

PMID37521099
PMCPMC10382754
OpenAlexW4384406358

What OpenQuestion 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 OpenQuestion graph.