Evidence map›Paper›PMID 38956731›Full record

ArticleBMC sports science, medicine & rehabilitation2024

Vitamin D levels and bone mineral density of middle-aged premenopausal female football and volleyball players in Japan: a cross-sectional study.

Kimiko Sakamoto, Takayuki Miyamori, Yuki Someya, Masashi Nagao, Yoshihiko Ishihara, Yohei Kobayashi, Yu Shimasaki, Junko Imai, Takeshi Ono, Hiroshi Ikeda and 2 more

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Article in BMC sports science, medicine & rehabilitation, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Review
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.

Kimiko SakamotoGraduate School of Health and Sports Science, Juntendo University, Chiba, Japan.
Takayuki MiyamoriDepartment of Physical Therapy, Faculty of Health Science, Juntendo University, Tokyo, Japan. t.miyamori.hi@juntendo.ac.jp.
Yuki SomeyaGraduate School of Health and Sports Science, Juntendo University, Chiba, Japan.
Masashi NagaoDepartment of Orthopedic Surgery, Faculty of Medicine, Juntendo University, Tokyo, Japan.
Yoshihiko IshiharaSchool of Science and Technology for Future Life, Tokyo Denki University, Tokyo, Japan.
Yohei KobayashiJ Medical Oyumino, Chiba, Japan.
Yu ShimasakiDepartment of Sports Science, Faculty of Health and Sports Science, Juntendo University, Chiba, Japan.
Junko ImaiJapan Football Association, Tokyo, Japan.
Takeshi OnoJapan Football Association, Tokyo, Japan.
Hiroshi IkedaDepartment of Physical Therapy, Faculty of Health Science, Juntendo University, Tokyo, Japan.
Kohzo TashimaJapan Football Association, Tokyo, Japan.
Masafumi YoshimuraGraduate School of Health and Sports Science, Juntendo University, Chiba, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe number of football teams in senior categories has increased. As outdoor sports entail players being exposed to sunlight, playing football may contribute to maintaining vitamin D stores and body mineral density while preventing osteoporosis. This study aimed to determine the bone mineral density and vitamin D levels in middle-aged premenopausal female football players.

methodsParticipants were premenopausal females in their 40s. We evaluated bone mineral density of the second to the fourth lumbar vertebrae and femoral neck, serum 25-hydroxy vitamin D (25-OHD) levels, which is an indicator of vitamin D stores, and body composition. In addition, we administered a questionnaire survey on exercise habits and lifestyle. Ninety-two participants were categorised into three groups: the football group (n = 27), volleyball group (n = 40), and non-exercise group (n = 25).

resultsBone mineral density was higher in the football and volleyball groups than in the non-exercise group (P < 0.01). The volleyball group had a significantly higher bone mineral density of the lumbar spine and femoral neck than the non-exercise group (P < 0.01). The football group had a significantly higher bone mineral density of the femoral neck than the non-exercise group (P < 0.01). Although the football group had played fewer years than the volleyball group (P < 0.01), serum 25-OHD levels were the highest in the football group and were significantly higher than those in the volleyball and non-exercise groups (P < 0.01).

conclusionsMiddle-aged premenopausal football players had higher body vitamin D levels and bone mineral densities than non-active females. These results suggest that playing football may contribute to the prevention of osteoporosis.

trial registrationUMIN Clinical Trials Registry UMIN000054235. 2024/04/23. Retrospectively registered.

Indexed as

25-hydroxy vitamin DBone mineral densityExercise habitsFootballMiddle-agedPremenopausalVolleyball

Identifiers

PMID38956731
PMCPMC11221148

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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.