Exercise training augments the peripheral insulin-sensitizing effects of pioglitazone in HIV-infected adults with insulin resistance and central adiposity

Kevin E. Yarasheski, W. Todd Cade, E. Turner Overton, Kristin E. Mondy, Sara Hubert, Erin Laciny, Coco Bopp, Sherry Lassa-Claxton, Dominic N. Reeds

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The prevalence and incidence of insulin resistance and type 2 diabetes mellitus (DM) are higher in people treated for human immunodeficiency virus-1 (HIV) infection than in the general population. Identifying safe and effective interventions is a high priority. We evaluated whether the peroxisome proliferator-activated receptor-γ agonist pioglitazone with exercise training improves central and peripheral insulin sensitivity more than pioglitazone alone in HIV-infected adults with insulin resistance and central adiposity. Forty-four HIV-infected adults with baseline insulin resistance and central adiposity were randomly assigned to 4 mo of pioglitazone (30 mg/day) with or without supervised, progressive aerobic, and resistance exercise training (1.5-2 h/day, 3 days/wk). The hyperinsulinemic euglycemic clamp was used to evaluate alterations in central and peripheral insulin sensitivity. Thirty-nine participants completed the study. Hepatic insulin sensitivity improved similarly in both groups. Exercise training augmented the beneficial effects of pioglitazone on peripheral insulin sensitivity. Greater improvements in peripheral insulin sensitivity were associated with reductions in total body and limb adipose content rather than increases in limb adiposity or pioglitazone-induced increases in adiponectin concentration. We conclude that supplementing pioglitazone with increased physical activity improved insulin sensitivity more effectively than pioglitazone alone in HIV-infected adults with insulin resistance and central adiposity. Pioglitazone alone did not significantly increase limb adipose content. Potential cardiovascular benefits of these interventions in HIV need investigation.

Original languageEnglish (US)
JournalAmerican Journal of Physiology - Endocrinology and Metabolism
Volume300
Issue number1
DOIs
StatePublished - Jan 2011

Fingerprint

pioglitazone
Adiposity
Insulin Resistance
HIV-1
Exercise
Insulin
Extremities
Peroxisome Proliferator-Activated Receptors
Glucose Clamp Technique
Resistance Training

Keywords

  • Cardiovascular disease risk factors
  • Chronic inflammation
  • Diabetes
  • Human immunodeficiency virus-1
  • Metabolic complications
  • Physical activity

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)
  • Endocrinology, Diabetes and Metabolism

Cite this

Exercise training augments the peripheral insulin-sensitizing effects of pioglitazone in HIV-infected adults with insulin resistance and central adiposity. / Yarasheski, Kevin E.; Cade, W. Todd; Overton, E. Turner; Mondy, Kristin E.; Hubert, Sara; Laciny, Erin; Bopp, Coco; Lassa-Claxton, Sherry; Reeds, Dominic N.

In: American Journal of Physiology - Endocrinology and Metabolism, Vol. 300, No. 1, 01.2011.

Research output: Contribution to journalArticle

Yarasheski, Kevin E. ; Cade, W. Todd ; Overton, E. Turner ; Mondy, Kristin E. ; Hubert, Sara ; Laciny, Erin ; Bopp, Coco ; Lassa-Claxton, Sherry ; Reeds, Dominic N. / Exercise training augments the peripheral insulin-sensitizing effects of pioglitazone in HIV-infected adults with insulin resistance and central adiposity. In: American Journal of Physiology - Endocrinology and Metabolism. 2011 ; Vol. 300, No. 1.
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