Exercise and postprandial lipemia: effect of continuous compared with intermittent activity patterns

Abstract

Accumulating multiple short bouts of exercise throughout the day effectively reduce postprandial plasma triacylglycerol concentrations to an extent similar to that of a single 30-min session of exercise in healthy young men.

Effects of continuous versus accumulated activity patterns on postprandial triacylglycerol concentrations in obese men

“…This findings has previously been demonstrated for high volume of activity (2 MJ ¼ 476 kcal) in active, healthy men. 11 The present findings are also consistent with the findings of previous studies that a prior single bout of exercise reduces postprandial TAG concentrations in overweight/obese men 22,23 and overweight/obese men with other CVD risk factors. 24,25 Furthermore, the present findings extend the findings of the previous studies by demonstrating that 30 min of moderate-intensity cycling (0.9 MJ), as previously demonstrated for 90 min moderate-intensity walking (2.8 MJ), 22 (3.7 MJ), 23 60 min of moderate-intensity running (2.6 MJ) 24 and 60 min of moderate/high-intensity running (1.8-3.0 MJ), 25 performed the day before the test meal is effective at lowering postprandial TAG concentrations.…”

“…10 To our knowledge, the present study is the first to examine Accumulating exercise and postprandial lipaemia M Miyashita the effects of accumulating short (3 min) bouts of activity on postprandial lipaemia in obese men. Data from the present study extend the findings of the previous study 11 by demonstrating that the recommended volume of activity (0.84 MJ ¼ 200 kcal) accumulated through multiple short bouts of moderate intensity activity is as effective in lowering postprandial TAG concentrations as 30 min of an equivalent volume of activity performed in one continuous bout in inactive obese men. This findings has previously been demonstrated for high volume of activity (2 MJ ¼ 476 kcal) in active, healthy men.…”

“…An exercise volume of 30 min was chosen as this is consistent with current guidelines regarding physical activity and health. 1,2 Furthermore, previous studies have shown that this duration 11 and volume 16 of exercise performed both continuously (one, 30-min bout) and intermittently (10, 3-min bouts) is equally effective in reducing postprandial plasma TAG concentrations in young healthy men. Cycling was chosen because it is a low impact form of exercise and therefore suitable for heavy individuals to reduce joint stain and hence the risk of injury.…”

“…5 The effectiveness of accumulating short bout of exercise to reduce postprandial lipaemia (it is considered an emerging risk factor for cardiovascular disease 6 (CVD)) has been examined in previous studies. [7][8][9][10][11][12] Four studies have reported that the reduction in postprandial triacylglycerol (TAG) concentrations was comparable for accumulated (bouts lasting 3-30 min each bout) versus an equivalent volume of continuous activity [9][10][11] or even greater with accumulated (bouts lasting 10 min each bout) versus an equivalent volume of continuous exercise. 7 Although all four studies have provided support for the concept of accumulation, the acute effects of accumulating exercise in bouts shorter than 10 min per session throughout the day on postprandial TAG concentrations in obese individuals has not been determined.…”

“…7 Although all four studies have provided support for the concept of accumulation, the acute effects of accumulating exercise in bouts shorter than 10 min per session throughout the day on postprandial TAG concentrations in obese individuals has not been determined. It is important to address this issue as the subjects in previous studies, 7,9,11 with exception of one study, 10 were healthy individuals. Thus, the findings needs to be generalized, to less active, overweight/obese individuals at more risk of CVD because perturbations in TAG concentrations following meals are more likely to be exaggerated in such individuals compared with their healthy peers.…”