ABSTRACT
Elevated postprandial triacylglycerol (TAG) concentrations have been implicated in the development of atherosclerosis (Zilversmit, 1979), and are established as an independent risk factor for future cardiovascular diseases in adults (Nordestgaard et al., 2007). The process of atherosclerosis is initiated during childhood and adolescence, prompting preventative interventions that may delay atherosclerotic progression early in life (McGill et al., 2000). Accumulating evidence in boys demonstrates the TAG lowering effect of moderate intensity exercise interventions (e.g., Tolfrey et al., 2012). It is possible that the energy deficit associated with a single session of exercise may be responsible for the attenuation in postprandial [TAG]. Replacing the exercise-induced energy deficit has been shown to diminish or even eliminate the reduction in postprandial [TAG] in men (Burton et al., 2008). Although an exercise-induced energy deficit appears to reduce postprandial [TAG] to a greater extent than a diet-induced deficit (Gill and Hardman, 2000; Maraki et al., 2010), attenuations in postprandial [TAG] have been reported following a single day of energy-intake restriction in young, healthy women (Maraki et al., 2010). However, we are not aware of studies that have examined the effect of energy-intake restriction on postprandial [TAG] in young people. Therefore, the aim of this study was to compare the effect of an isoenergetic mild energy deficit, induced by acute moderate intensity exercise or food energy-intake restriction on postprandial [TAG] in healthy, active girls.
