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Effect of aerobic exercise on lipaemia and its fatty acid profile after a meal of moderate fat content in eumenorrhoeic women

Published online by Cambridge University Press:  08 March 2007

Nikos Kokalas ,
Anatoli Petridou ,
Michalis G. Nikolaidis  and
Vassilis Mougios
Nikos Kokalas
Affiliation:
Department of Physical Education and Sport Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Anatoli Petridou
Affiliation:
Department of Physical Education and Sport Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Michalis G. Nikolaidis
Affiliation:
Department of Physical Education and Sport Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Vassilis Mougios*
Affiliation:
Department of Physical Education and Sport Science, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
*
*Corresponding author: Dr Vassilis Mougios, fax +30 2310992176, email mougios@phed.auth.gr
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Abstract

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Exercise prior to eating has repeatedly been shown to reduce postprandial lipaemia. The aim of the present study was to investigate whether this effect was manifest in the presence of two factors that independently mitigate postprandial lipaemia: eumenorrhoea and moderate fat intake. Eight healthy eumenorrhoeic rowers consumed a meal of moderate fat content (35% total energy, 0·66g/kg body mass) 14h after having either rowed at 55% of maximal aerobic power (81% of maximal heart rate) for 80min or rested. Both trials were performed during the luteal phase. Blood samples were drawn before the meal and for 8h postprandially for the measurement of individual fatty acids in the triacylglycerol and NEFA fractions, as well as of glucose, insulin and oestradiol. Plasma oestradiol concentrations were not significantly different in the two trials. The postprandial lipaemic response, expressed as either plasma triacylglycerol concentration or area under the triacylglycerol–time curve, was 35% lower (P<0·05) after exercise. The postprandial glycaemic and insulinaemic responses were also lower, indicating increased insulin sensitivity, whereas the NEFA response was higher, suggesting a lower entrapment of dietary fatty acids in adipose tissue after exercise. Finally, exercise increased the proportion of unsaturated:saturated NEFA during the postprandial period. In conclusion, aerobic exercise performed 14h before a moderate-fat meal reduced postprandial lipaemia in women in the luteal phase. This effect shows the potential of exercise to mitigate even moderate lipaemic responses in eumenorrhoeic women.

Keywords

OestradiolInsulinPostprandial lipaemiaTriacylglycerols
Type
Research Article
Information
British Journal of Nutrition , Volume 94 , Issue 5 , November 2005 , pp. 698 - 704
Copyright
Copyright © The Nutrition Society 2005

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