Evidence map›Paper›PMID 19390517›Full record

Trial reportObesity (Silver Spring, Md.)2009

Diet and exercise interventions reduce intrahepatic fat content and improve insulin sensitivity in obese older adults.

Krupa Shah, Abby Stufflebam, Tiffany N Hilton, David R Sinacore, Samuel Klein, Dennis T Villareal

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Obesity (Silver Spring, Md.), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 10 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 10 pooled it
9.3field-weighted citation impact, top 2% 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

75 citing papers in PubMed, 10 syntheses or guidelines pooled it, 193 citations in OpenAlex.

  1. EffectS of Lifestyle Interventions in Older PEople With Obesity (Effective SLOPE): a Systematic Review With Network Meta-Analyses.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
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  4. Impact of different training modalities on anthropometric outcomes in patients with obesity: A systematic review and network meta-analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2021
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15 more citing papers are in PubMed but not listed here.

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

6 authors at 1 institution in 1 country.

Krupa ShahDepartment of Medicine, Division of Geriatrics and Nutritional Science, Center for Human Nutrition, Washington University School of Medicine, St Louis, Missouri, USA.
Abby Stufflebam
Tiffany N Hilton
David R Sinacore
Samuel Klein
Dennis T Villareal
Washington University in St. Louis · US

Funding

Washington University Institute of Clinical and Translational Sciences (UL1)UL1RR024992 · NCRR · WASHINGTON UNIVERSITY · PI EVANOFF, BRADLEY A · 2007 to 2011
$45.4M
Washington University Institute of Clinical and Translational SciencesUL1TR000448 · NCATS · WASHINGTON UNIVERSITY · PI EVANOFF, BRADLEY A · 2012 to 2016
$41.4M
Washington University Nutrition Obesity Research CenterP30DK056341 · NIDDK · WASHINGTON UNIVERSITY · PI Dominic N Reeds · 1999 to 2026
$30.2M
THERMOGENESIS AND EXERCISE IN LEAN, OBESE, AND DIABETICR01DK037948 · NIDDK · WEILL MEDICAL COLLEGE OF CORNELL UNIV · PI KLEIN, SAMUEL · 1987 to 2012
$4.6M
Weight Loss and Exercise in Frail Obese Elderly SubjectsR01AG025501 · NIA · WASHINGTON UNIVERSITY · PI VILLAREAL, DENNIS T. · 2005 to 2009
$1.7M
NCATS NIH HHS UL1 TR000448NCRR NIH HHS UL1 RR024992NIA NIH HHS AG025501NIA NIH HHS R01 AG025501NIDDK NIH HHS DK 37948NIDDK NIH HHS DK 56341NIDDK NIH HHS P30 DK056341NIDDK NIH HHS R01 DK037948
6 · The paper itself

Abstract

Both obesity and aging increase intrahepatic fat (IHF) content, which leads to nonalcoholic fatty liver disease (NAFLD) and metabolic abnormalities such as insulin resistance. We evaluated the effects of diet and diet in conjunction with exercise on IHF content and associated metabolic abnormalities in obese older adults. Eighteen obese (BMI >or=30 kg/m(2)) older (>or=65 years old) adults completed a 6-month clinical trial. Participants were randomized to diet (D group; n = 9) or diet + exercise (D+E group; n = 9). Primary outcome was IHF quantified by magnetic resonance spectroscopy (MRS). Secondary outcomes included insulin sensitivity (assessed by oral glucose tolerance), body composition (assessed by dual-energy X-ray absorptiometry), physical function (VO(2 peak) and strength), glucose, lipids, and blood pressure (BP). Body weight (D: -9 +/- 1%, D+E: -10 +/- 2%, both P < 0.05) and fat mass (D: -13 +/- 3%, D+E -16 +/- 3%, both P < 0.05) decreased in both groups but there was no difference between groups. IHF decreased to a similar extent in both groups (D: -46 +/- 11%, D+E: -45 +/- 8%, both P < 0.05), which was accompanied by comparable improvements in insulin sensitivity (D: 66 +/- 25%, D+E: 68 +/- 28%, both P < 0.05). The relative decreases in IHF correlated directly with relative increases in insulin sensitivity index (ISI) (r = -0.52; P < 0.05). Improvements in VO(2 peak), strength, plasma triglyceride (TG), and low-density lipoprotein-cholesterol concentration, and diastolic BP occurred in the D+E group (all P < 0.05) but not in the D group. Diet with or without exercise results in significant decreases in IHF content accompanied by considerable improvements in insulin sensitivity in obese older adults. The addition of exercise to diet therapy improves physical function and other obesity- and aging-related metabolic abnormalities.

Indexed as

DietExerciseInsulin ResistanceAdipose TissueAgedAged, 80 and overBlood GlucoseBlood PressureBody WeightCholesterol, LDLFatty LiverFemaleGlucose IntoleranceHumansMaleObesityBlood GlucoseCholesterol, LDLTriglycerides

Identifiers

PMID19390517
PMCPMC2793412
OpenAlexW2103749588

What OpenQuestion holds

Textmetadata
LicenceTDM
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.