Evidence map›Paper›PMID 39345832›Full record

ArticleBMJ open sport & exercise medicine2024

Influence of vitamin D supplementation on muscle strength and exercise capacity in South African schoolchildren: secondary outcomes from a randomised controlled trial (ViDiKids).

Keren Middelkoop, Lisa Micklesfield, Stephanie Hemmings, Neil Walker, Justine Stewart, David A Jolliffe, Amy E Mendham, Jonathan C Y Tang, Cyrus Cooper, Nicholas C Harvey and 2 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMJ open sport & exercise medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

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

  1. Pooled it
  2. Article
  3. 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

12 authors.

Keren MiddelkoopDesmond Tutu HIV Centre, Institute of Infectious Diseases & Molecular Medicine, University of Cape Town, Observatory, South Africa.
Lisa MicklesfieldHealth through Physical Activity, Lifestyle and Sport Research Centre (HPALS), Division of Physiological Sciences, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
Stephanie HemmingsSchool of Sport and Health Sciences, University of Brighton, Eastbourne, UK.
Neil WalkerWolfson Institute of Population Health, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK.
Justine StewartDesmond Tutu HIV Centre, Institute of Infectious Diseases & Molecular Medicine, University of Cape Town, Observatory, South Africa.
David A JolliffeBlizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK.
Amy E MendhamSAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Jonathan C Y TangNorwich Medical School, University of East Anglia, Norwich, UK.
Cyrus CooperMRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK.
Nicholas C HarveyMRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK.
Robert J WilkinsonCentre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Observatory, South Africa.
Adrian R MartineauSchool of Sport and Health Sciences, University of Brighton, Eastbourne, UK.ORCID 0000-0001-5387-1721

Funding

Medical Research Council MC_PC_21003Medical Research Council MC_UP_A620_1015Medical Research Council MC_UU_12011/2Wellcome Trust
6 · The paper itself

Abstract

Objective: To determine whether vitamin D supplementation influences grip strength, explosive leg power, cardiorespiratory fitness and risk of exercise-induced bronchoconstriction (EIB) in South African schoolchildren. Methods: Substudy (n=450) in Cape Town schoolchildren aged 8-11 years nested within a phase 3 randomised placebo-controlled trial (ViDiKids). The intervention was weekly oral doses of 10 000 IU vitamin D Results: 64.7% of participants had serum 25(OH)D Conclusion: A 3-year course of weekly oral supplementation with 10 000 IU vitamin D

Indexed as

Children's health and exerciseFitness testingNutrition

Identifiers

PMID39345832
PMCPMC11429360

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.