Effect of High-Intensity Intermittent Exercise on Postprandial Plasma Triacylglycerol in Sedentary Young Women

• Autores: Martin Tan, Rachel Chan Moy Fat, Yati N. Boutcher, Stephen H. Boutcher
• Localización: International journal of sport nutrition and exercise metabolism, ISSN 1526-484X, ISSN-e 1543-2742, Vol. 24, Nº. 1, 2014, págs. 110-118
• Idioma: inglés
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• Resumen

  • High-intensity intermittent exercise (HIIE) such as the 30-s Wingate test attenuates postprandial triacylglycerol (TG), however, the ability of shorter versions of HIIE to reduce postprandial TG is undetermined. Thus, the effect of 8-s sprinting bouts of HIIE on blood TG levels of 12 females after consumption of a high-fat meal (HFM) was examined. Twelve young, sedentary women (BMI 25.1 ± 2.3 kg/m2; age 21.3 ± 2.1 years) com- pleted a maximal oxygen uptake test and then on different days underwent either an exercise or a no-exercise postprandial TG condition. Both conditions involved consuming a HFM after a 12-hr fast. The HFM, in milk- shake form provided 4170 kJ (993 Kcal) of energy and 98 g fat. Order was counter-balanced. In the exercise condition participants completed 20-min of HIIE cycling consisting of repeated bouts of 8 s sprint cycling (100�115 rpm) and 12 s of active rest (easy pedaling) 14 hr before consuming the HFM. Blood samples were collected hourly after the HFM for 4 hr. Total postprandial TG was 13% lower, p = .004, in the exercise (5.84 ± 1.08 mmol L�1 4 h�1) compared with the no-exercise condition (6.71 ± 1.63 mmol L�1 4 h�1). In conclusion, HIIE significantly attenuated postprandial TG in sedentary young women.