Evidence map›Paper›PMID 15988708›Full record

Trial reportMetabolism: clinical and experimental2005

Modest weight loss improves insulin action in obese African Americans.

Susan B Racette, Edward P Weiss, Robert C Hickner, John O Holloszy

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Metabolism: clinical and experimental, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.3field-weighted citation impact, top 31% 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

8 citing papers in PubMed, 13 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. The effect of health shocks on smoking and obesity.The European journal of health economics : HEPAC : health economics in prevention and care · 2012
    Article
  6. Article
  7. Article
  8. 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

4 authors at 1 institution in 1 country.

Susan B RacetteDepartment of Medicine, Washington University School of Medicine, St Louis, MO 63110-2212, USA.
Edward P Weiss
Robert C Hickner
John O Holloszy
Washington University in St. Louis · US

Funding

WU P&FP30DK020579 · NIDDK · WASHINGTON UNIVERSITY · PI Jennifer Lynn Powers Carson · 2013 to 2026
$27.1M
YOGA FOR THE MANAGEMENT OF HIV-METABOLIC SYNDROMESM01RR000036 · NCRR · WASHINGTON UNIVERSITY · PI NEWCOMER, JOHN W. · 1985 to 2007
$25.4M
TRANSGENICS COREP60DK020579 · NIDDK · WASHINGTON UNIVERSITY · PI SCHAFFER, JEAN E. · 1986 to 2012
$25.2M
EXERCISE AS PREVENTIVE MEDICINE IN THE AGING PROCESST32AG000078 · NIA · WASHINGTON UNIVERSITY · PI KLEIN, SAMUEL · 1985 to 2005
$1.2M
PREVENTION OF NIDDM IN CENTRALLY OBESE AFRICAN AMERICANSR01DK048128 · NIDDK · WASHINGTON UNIVERSITY · PI HOLLOSZY, JOHN O. · 1994 to 1996
–
NCRR NIH HHS 5M01RR00036NCRR NIH HHS M01 RR000036NIA NIH HHS AG-00078NIA NIH HHS T32 AG000078NIDDK NIH HHS DK20579NIDDK NIH HHS DK48128NIDDK NIH HHS P30 DK020579NIDDK NIH HHS P60 DK020579
6 · The paper itself

Abstract

objectiveWe have previously shown that short-term energy restriction followed by modest lifestyle changes improves glucose tolerance for up to 1 year in obese individuals. The purpose of the present study was to determine the mechanism by which improvements in glucose tolerance occur in obese African Americans with insulin resistance and abnormal glucose tolerance. RESEARCH DESIGN AND

methodsNine subjects (53 +/- 2 years; body mass index, 37 +/- 3 kg/m 2 [mean +/- SEM]) received a low-energy diet (3883 +/- 222 kJ/d) for 1 week, and then followed a modest lifestyle intervention program for up to 1 year. Body composition was estimated by hydrostatic weighing, and insulin secretion and action were assessed during a hyperglycemic clamp with superimposed arginine infusion and fat meal. Baseline and final tests were performed during weight stability.

resultsSignificant improvements ( P < .05) were observed for body weight (-6.1 +/- 1.1 kg), body composition (-5.5 +/- 1.3 kg fat mass), fasting plasma glucose (-1.1 +/- 0.3 mmol/L), fasting insulin (-52 +/- 21 pmol/L), oral glucose tolerance, and insulin action (+24%), defined as an increase in glucose disposal rate relative to plasma insulin concentration during the hyperglycemic clamp. These improvements were independent of an acute effect of energy restriction or weight loss, because body weight was stable.

conclusionsThese results suggest that the improvements in glucose tolerance with a modest lifestyle intervention were attributable to an improvement in insulin action, and provide evidence that despite persistent obesity (body mass index, 34.7 +/- 2.4 kg/m 2 ), long-term benefits can be achieved with relatively small weight loss in obese African Americans.

Indexed as

Black PeopleWeight LossBlack or African AmericanBlood GlucoseFemaleGlucose Tolerance TestHumansHyperglycemiaInsulinMaleMiddle AgedObesityBlood GlucoseInsulin

Identifiers

PMID15988708
PMCPMC1636500
OpenAlexW1987531013

What OpenQuestion holds

Textmetadata
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.