Acute and chronic effects of sprint interval exercise on postprandial lipemia in women at-risk for the metabolic syndrome.

Autor:	Freese EC; Department of Kinesiology, University of Georgia, Athens, Georgia; efreese2@gmail.com., Gist NH; Department of Kinesiology, University of Georgia, Athens, Georgia; Department of Physical Education, United States Military Academy, West Point, New York;, Acitelli RM; Department of Kinesiology, University of Georgia, Athens, Georgia;, McConnell WJ; Department of Kinesiology, University of Georgia, Athens, Georgia;, Beck CD; Department of Kinesiology, University of Georgia, Athens, Georgia;, Hausman DB; Department of Foods and Nutrition, University of Georgia, Athens, Georgia; and., Murrow JR; Georgia Regents University, University of Georgia Medical Partnership, Athens, Georgia., Cureton KJ; Department of Kinesiology, University of Georgia, Athens, Georgia;, Evans EM; Department of Kinesiology, University of Georgia, Athens, Georgia;
Jazyk:	angličtina
Zdroj:	Journal of applied physiology (Bethesda, Md. : 1985) [J Appl Physiol (1985)] 2015 Apr 01; Vol. 118 (7), pp. 872-9. Date of Electronic Publication: 2015 Jan 15.
DOI:	10.1152/japplphysiol.00380.2014
Abstrakt:	Individuals diagnosed with the metabolic syndrome (MetS) exhibit elevated postprandial lipemia (PPL). The aims of this investigation were to determine 1) if an acute bout of sprint interval training (SIT) attenuates PPL; and 2) if the attenuation of PPL following 6 wk of SIT is magnified compared with a single session of SIT prior to training in women at-risk for MetS (n = 45; 30-65 yr). Women were randomized to SIT (n = 22) or a nonexercise control (n = 23; CON) for 6 wk. Postprandial responses to a high-fat meal challenge (HFMC) were assessed in the CON group before (B-HFMC) and after (Post-HFMC) without prior exercise and in the SIT group at baseline (B-HFMC) without prior exercise, after an acute bout of SIT (four 30-s all-out sprints with 4-min recovery) prior to (Pre-HFMC), and after the 6-wk intervention (Post-HFMC). Responses to the HFMC were assessed by collecting venous blood samples in the fasted state and at 0, 30, 60, 120, and 180 min postprandial. Compared with baseline, an acute bout of SIT before (Pre-HFMC) and after the 6-wk intervention (Post-HFMC) significantly attenuated fasted TG (P < 0.05; 16.6% and 12.3%, respectively) and postprandial area under the curve (13.1% and 9.7%, respectively; tAUC) TG responses. There was no difference in fasted or tAUC TG responses between Pre-HFMC and Post-HFMC. SIT is an effective mode of exercise to reduce fasted and postprandial TG concentrations in women at-risk for MetS. Six weeks of SIT does not magnify the attenuation of PPL in response to a single session of SIT. (Copyright © 2015 the American Physiological Society.)
Databáze:	MEDLINE
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