Evidence map›Paper›PMID 18195164›Full record

Trial reportHypertension (Dallas, Tex. : 1979)2008

Benefit of low-fat over low-carbohydrate diet on endothelial health in obesity.

Shane A Phillips, Jason W Jurva, Amjad Q Syed, Amina Q Syed, Jacquelyn P Kulinski, Joan Pleuss, Raymond G Hoffmann, David D Gutterman

Registry-linked trialOpen access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Hypertension (Dallas, Tex. : 1979), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00993278 (Effects of the Atkins Diet Versus a Low Fat Diet on Endothelial Function, Lipid Profiles, and Systemic Markers of Inflammation), which is not on this map. Cited by 32 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 5 pooled it
4.7field-weighted citation impact, top 5% 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.

NCT00993278 phase3completednot on this map

Effects of the Atkins Diet Versus a Low Fat Diet on Endothelial Function, Lipid Profiles, and Systemic Markers of Inflammation

TypeinterventionalSponsorBoston Medical CenterRan2008 to 2011Enrolled60ConditionsCardiovascular Health, ObesityArmsLow-Carbohydrate (Modified Atkins) Diet, Low-Fat (Heart Healthy) Diet
3 · Its place in the literature

Who cites it

32 citing papers in PubMed, 5 syntheses or guidelines pooled it, 83 citations in OpenAlex.

  1. Pooled it
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  16. [Dietary Management of Obesity].The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi · 2024
    Review
  17. Review
  18. Vascular Aging: Assessment and Intervention.Clinical interventions in aging · 2023
    Review
  19. Review
  20. 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

8 authors at 1 institution in 1 country.

Shane A PhillipsDepartment of Medicine, Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA. shanep@uic.edu
Jason W Jurva
Amjad Q Syed
Amina Q Syed
Jacquelyn P Kulinski
Joan Pleuss
Raymond G Hoffmann
David D Gutterman
University of Illinois Chicago · US

Funding

ZONISMIDE IN THE TREATMENT OF SEIZURES IN PATIENTSM01RR000058 · NCRR · MEDICAL COLLEGE OF WISCONSIN · PI HYDE, JAMES F · 1985 to 2006
$19.9M
Effects of Low Carbohydrate and Low Fat Diets on Endothelium Function in ObesityR01HL095701 · NHLBI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI PHILLIPS, SHANE A · 2010 to 2014
$2.1M
Mechanisms of exertional hypertension and vascular dysfunctionK23HL085614 · NHLBI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI PHILLIPS, SHANE A · 2007 to 2011
$645k
NCRR NIH HHS M01 RR000058NCRR NIH HHS MO1-RR00058NHLBI NIH HHS K23 HL085614NHLBI NIH HHS R01 HL095701
6 · The paper itself

Abstract

Obesity is associated with impaired endothelial-dependent flow-mediated dilation, a precursor to hypertension and atherosclerosis. Although dieting generally improves cardiovascular risk factors, the direct effect of different dietary strategies on vascular endothelial function is not known. The purpose of this study was to test the hypothesis that a low-fat (LF) diet improves endothelial function compared with an isocaloric low-carbohydrate (LC) diet. Obese (n=20; body mass index: 29 to 39; mean systolic blood pressure: 107 to 125 mm Hg) and otherwise healthy volunteers were randomly assigned to either the American Heart Association modeled LF (30% fat calories) diet or an isocaloric LC Atkins' style diet (20 g of carbohydrates) for 6 weeks (4-week weight loss and 2-week maintenance phase). Brachial flow-mediated dilation and dilation to nitroglycerin were measured with ultrasound using automated edge detection technology (baseline, week 2, and week 6). Blood pressure, weight loss, and cholesterol profiles were measured throughout the study. Weight loss was similar in LF (100+/-4 to 96.1+/-4 kg; P<0.001) and LC (95.4+/-4 to 89.7+/-4 kg; P<0.001) diets. Blood pressure decreased similarly in both groups (LF: 8/5 mm Hg; LC: 12/6 mm Hg) at 6 weeks. After 6 weeks, the percentage of flow-mediated dilation improved (1.9+/-0.8; P<0.05) in the LF diet but was reduced in the LC diet (-1.4+/-0.6; P<0.05) versus baseline. Dilation to nitroglycerin and lipid panels was similar at 0, 2, and 6 weeks. Despite similar degrees of weight loss and changes blood pressure, LF diets improved brachial artery flow-mediated dilation over LC diets. LF diets may confer greater cardiovascular protection than LC diets.

Indexed as

Diet, Carbohydrate-RestrictedDiet, Fat-RestrictedAdultBlood PressureBrachial ArteryEndothelium, VascularFastingFemaleHumansInsulinLipidsMaleNitroglycerinObesityRegional Blood FlowUltrasonographyInsulinLipidsNitroglycerinVasodilator Agents

Identifiers

PMID18195164
PMCPMC2702133
OpenAlexW2172290424

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.