Impact of walking on adipose tissue lipoprotein lipase activity and expression in pre- and postmenopausal women

OBJECTIVE: The aim of this study was to examine regional variation in adipose tissue lipoprotein lipase (AT-LPL) activity and expression in pre-and postmenopausal women, before and after training, once differences in chronological age or obesity degree are taken into account. METHODS: Sixteen late pre- and 14 early postmenopausal (49 +/- 2 vs. 52 +/- 2 years; p 0.001) moderately obese women (body mass index 29-35 kg/m(2)) were subjected to a 16-week walking program (3 sessions/week of 45 min at 60% heart rate reserve). Abdominal and femoral AT-LPL activity and expression, fasting lipid-lipoprotein profile, body composition, and cardiorespiratory fitness (CRF) were measured before and after our intervention. Statistical analyses were performed using covariance analysis for age differences. RESULTS: AT-LPL activity and expression, lipid-lipoprotein metabolism, body fatness, and CRF were similar at baseline, irrespective of the group considered. Slight reductions in plasma cholesterol and high-density lipoprotein (HDL) cholesterol levels, fat mass and waist girth reductions, CRF increases as well as femoral AT-LPL activity and expression decreases after our intervention were comparable, regardless of menopausal status (0.0001 p 0.05). CONCLUSIONS: Lipid storage is decreased in the femoral depot after walking, regardless of menopausal status. Reduction in AT-LPL activity or expression does not lead to a more deleterious lipid-lipoprotein profile, despite the modest decrease noted in HDL cholesterol concentrations.
Auteurs (Zotero)
Tessier, Sebastien; Riesco, Eléonor; Lacaille, Michel; Pérusse, Francine; Weisnagel, John; Doré, Jean; Mauriège, Pascale
Date de publication (Zotero)
juin, 2010