Evidence map›Paper›PMID 26744300›Full record

SynthesisEuropean journal of nutrition2016

Examining techniques for measuring the effects of nutrients on mental performance and mood state.

Mark Hamer, Louise Dye, E Siobhan Mitchell, Sophie Layé, Caroline Saunders, Neil Boyle, Jeroen Schuermans, John Sijben

Abstract readSystematic Review
In one paragraph

Synthesis in European journal of nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. 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

8 authors.

Mark HamerDepartment Epidemiology and Public Health, Psychobiology Group, University College London, 1 - 19 Torrington Place, London, WC1E 7HB, UK.
Louise DyeHuman Appetite Research Unit, Institute of Psychological Sciences, University of Leeds, Leeds, UK.
E Siobhan MitchellNestlé Institute of Health Sciences, EPFL Campus, Lausanne, Switzerland.
Sophie LayéNutrition et Neurobiologie Intégrée, UMR 1286, INRA, 33000, Bordeaux, France.
Caroline SaundersPepsiCo, 450 South Oak Way, Green Park, Reading, RG2 6UW, UK.
Neil BoyleHuman Appetite Research Unit, Institute of Psychological Sciences, University of Leeds, Leeds, UK.
Jeroen SchuermansILSI Europe, Brussels, Belgium, International Life Sciences Institute, Europe, 83 Avenue E. Mounier, B6, Brussels, BE, 1200, USA. publications@ilsieurope.be.
John SijbenNutricia Research, Nutricia Advanced Medical Nutrition, Utrecht, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIntake of specific nutrients has been linked to mental states and various indices of cognitive performance although the effects are often subtle and difficult to interpret. Measurement of so-called objective variables (e.g. reaction times) is often considered to be the gold standard for assessing outcomes in this field of research. It can, however, be argued that data on subjective experience (e.g. mood) are also important and may enrich existing objective data. The aim of this review is to evaluate methods for measuring mental performance and mood, considering the definition of subjective mood and the validity of measures of subjective experience.

methodsA multi-stakeholder expert group was invited by ILSI Europe to come to a consensus around the utility of objective and subjective measurement in this field, which forms the basis of the paper. Therefore, the present review reflects a succinct overview of the science but is not intended to be a systematic review.

resultsThe proposed approach extends the traditional methodology using standard 'objective' measurements to also include the consumers' subjective experiences in relation to food. Specific recommendations include 1) using contemporary methods to capture transient mood states; 2) using sufficiently sensitive measures to capture effects of nutritional intervention; 3) considering the possibility that subjective and objective responses will occur over different time frames; and 4) recognition of the importance of expectancy and placebo effects for subjective measures.

conclusionsThe consensus reached was that the most informative approach should involve collection and consideration of both objective and subjective data.

Indexed as

AffectAnimalsCognitionHumansMicronutrientsModels, AnimalReaction TimeMicronutrientsAffective assessmentCognitionFoodMental healthMoodObjectiveSubjective

Identifiers

PMID26744300
PMCPMC5009169

What OpenQuestion holds

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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.