Is the effect of prior exercise on postprandial lipaemia the same for a moderate-fat meal as it is for a high-fat meal?

School of Sport and Exercise Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
The British journal of nutrition (Impact Factor: 3.45). 11/2010; 105(4):506-16. DOI: 10.1017/S0007114510003995
Source: PubMed


Moderate-intensity exercise can lower the TAG response to a high-fat meal; however, the British diet is moderate in fat, and no study to date has compared the effect of such exercise on responses to high-fat and moderate-fat meals. The present work investigated the effect of brisk walking performed 13 h before intake of both high-fat and moderate-fat meals on postprandial plasma TAG concentrations. Eight inactive, overweight men completed four separate 2 d trials, i.e. rest (Con) or a 90-min treadmill walk (Ex) on the evening of day 1, followed by the ingestion of a moderate-fat (Mod) or high-fat (High) meal on the morning of day 2. High-fat meals contained 66 % of total energy as fat, while the percentage was 35 % for moderate-fat meals; both the meals were, however, isoenergetic. On day 2, venous blood was sampled in the fasted state, 30 and 60 min after ingesting the test meal and then hourly until 6 h post-meal. Exercise reduced plasma TAG concentrations significantly (P < 0·001), with no exercise × meal interaction (P = 0·459). Walking reduced the total TAG response to a high-fat meal by 29 % (relative to High Con); the same bout of exercise performed before ingesting a moderate-fat meal lowered total TAG by 26 % (compared with Mod Con). The ability of a single moderate-intensity aerobic exercise bout to lower postprandial TAG concentrations is just as great, in percentage terms, when the test meal ingested is of a moderate rather than a high fat content.

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Available from: Frank F Eves, Feb 25, 2014
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    • "This adds to the debate about the effectiveness of walking exercise in reducing postprandial lipaemia. In this regard, although several studies have demonstrated reductions in postprandial TAG after walking exercise of 30 – 120 min in duration (Gill et al. 2001, 2003, 2004; Miyashita et al. 2008, 2013; Burns et al. 2009; Hurren et al. 2011; Kim et al. 2014), this is not a universal finding (Gabriel et al. 2012; Heden et al. 2013). In accordance with previous findings, walking exercise did not influence the glucose response to high fat feeding (Miyashita et al. 2008; Gabriel et al. 2012; Heden et al. 2013); however, the exercise-induced reduction in the postprandial insulin concentration appears to contrast these studies (Miyashita et al. 2008; Gabriel et al. 2012; Heden et al. 2013). "
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