This study examined the combined effects of exercise and monounsaturated fat (MUFA) meals on postprandial triacylglycerol (TAG) concentrations in young women. Nine healthy females completed four, 2-day trials in randomised order : olive oil-exercise (Olive-Ex), butter-exercise (Butter-Ex), olive oil-no exercise (Olive-Con), butter-no exercise (Butter-Con). Each trial was conducted during the follicular phase. For the exercise trials participants walked or ran on a treadmill for 60 min at 60% of maximum oxygen uptake on the afternoon of day 1. On the morning of day 2 participants reported to the lab after an overnight fast and a baseline blood sample was taken, then consumed a test meal comprising 55% fat, 39% carbohydrate, 6% protein and 65kJ·kg-1 body mass. The fat in this meal was supplied from either olive oil (saturated fat, SFA : 15% ; MUFA : 76% ; polyunsaturated fat, PUFA : 9%) or butter (SFA : 71% ; MUFA : 26% ; PUFA : 3%). Further blood samples were collected at hourly intervals for 6 h. Significant (P<0.05) trial, time and trial x time interaction effects were obtained for plasma TAG concentration. The Olive-Ex trial induced the lowest TAG area under the curve concentration among the four trials (Olive-Ex : 4.40±0.13 ; Butter-Ex : 4.95±0.39, Olive-Con : 5.62±0.42 ; Butter-Con : 5.91 ±0.34). Area under the curve values on this trial were 26% lower than values obtained on the ButterCon trial (P = 0.022). These data suggest that the optimal strategy for reducing postprandial TAG concentration in young females is to exercise regularly and to consume diets high in MUFA rather than SFA.
|ジャーナル||japanese journal of physical fitness and sports medicine|
|出版ステータス||Published - 2007 2|
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
- Physical Therapy, Sports Therapy and Rehabilitation