Evidence map›Paper›PMID 26543357›Full record

Trial reportClinical interventions in aging2015

Additive effect of linseed oil supplementation on the lipid profiles of older adults.

Ana Paula A Avelino, Gláucia M M Oliveira, Célia C D Ferreira, Ronir R Luiz, Glorimar Rosa

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Clinical interventions in aging, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 14% 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

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

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. 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

5 authors at 1 institution in 1 country.

Ana Paula A AvelinoPost-Graduate Program of Medicine-Cardiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Gláucia M M OliveiraPost-Graduate Program of Medicine-Cardiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Célia C D FerreiraDepartment of Nutrition and Dietetics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Ronir R LuizInstitute of Public Health Studies, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Glorimar RosaPost-Graduate Program of Medicine-Cardiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil ; Department of Nutrition and Dietetics, Josué de Castro Nutrition Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Universidade Federal do Rio de Janeiro · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLinseed oil has been investigated as a rich source of n-3 series polyunsaturated fatty acids, which mainly produce a non-atherogenic lipid profile. The objective of this study was to investigate the effect of linseed oil supplementation associated with nutritional guidelines on the lipid profiles of older adults, according to the intake of saturated fatty acids (SFA).

methodsWe conducted a double-blind, placebo-controlled clinical trial with 110 older adults randomized in two groups: placebo and linseed oil. The linseed oil group received supplementation with 3 g of linseed oil. Both groups received nutritional guidance and were supplemented for 90 days with monthly blood collection for biochemical analysis. The dietary intake of saturated fat was subdivided into low (<7% SFA/day of the total energy value) and high consumption groups (>7% SFA/day of the total energy value).

resultsLow SFA (<7% SFA/day of total energy value) consumption was associated with lower total cholesterol concentrations. However, we observed that the linseed oil group, including older adults who consumed >7% SFA/day, had a greater reduction in total cholesterol than the placebo group (P=0.020). The same was observed for low-density lipoprotein (LDL) cholesterol (P<0.050), suggesting an additive effect of linseed oil and diet. High-density lipoprotein (HDL) cholesterol concentrations were increased significantly in only the linseed group, suggesting that the nutritional intervention alone did not improve HDL cholesterol.

conclusionThe results suggest that the nutritional intervention was effective, but linseed oil showed notable effects by increasing the HDL cholesterol concentration. In addition, consumption of <7% SFA/day of the total energy value increased the effect of linseed oil, demonstrating the importance of reducing the consumption of saturated fat.

Indexed as

Dietary SupplementsAgedAnthropometryBody CompositionBrazilDouble-Blind MethodFatty AcidsFemaleHumansLinseed OilLipidsMaleMiddle AgedProspective StudiesTreatment OutcomeFatty AcidsLinseed OilLipidsatherosclerosiselderlyhigh-density lipoprotein cholesterollinseed oilolder adultssaturated fatty acids

Identifiers

PMID26543357
PMCPMC4622491
OpenAlexW2157278373

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Registered trials

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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.