Interrupting Sitting Time with Regular Walks Attenuates Postprandial Triglycerides.
We compared the effects of prolonged sitting with the effects of sitting interrupted by regular walking and the effects of prolonged sitting after continuous walking on postprandial triglyceride in postmenopausal women. 15 participants completed 3 trials in random order: 1) prolonged sitting, 2) regular walking, and 3) prolonged sitting preceded by continuous walking. During the sitting trial, participants rested for 8 h. For the walking trials, participants walked briskly in either twenty 90-sec bouts over 8 h or one 30-min bout in the morning (09:00-09:30). Except for walking, both exercise trials mimicked the sitting trial. In each trial, participants consumed a breakfast (08:00) and lunch (11:00). Blood samples were collected in the fasted state and at 2, 4, 6 and 8 h after breakfast. The serum triglyceride incremental area under the curve was 15 and 14% lower after regular walking compared with prolonged sitting and prolonged sitting after continuous walking (4.73±2.50 vs. 5.52±2.95 vs. 5.50±2.59 mmol/L∙8 h respectively, main effect of trial: P=0.023). Regularly interrupting sitting time with brief bouts of physical activity can reduce postprandial triglyceride in postmenopausal women.
Department of Health and Sports Sciences, Tokyo Gakugei University, Koganei, Japan.
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Miyashita
Department of Health and Sports Sciences, Tokyo Gakugei University, Koganei, Japan.
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K
Edamoto
Department of Health and Sports Sciences, Tokyo Gakugei University, Koganei, Japan.
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Kidokoro
Department of Health and Sports Sciences, Tokyo Gakugei University, Koganei, Japan.
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Yanaoka
Department of Health and Sports Sciences, Tokyo Gakugei University, Koganei, Japan.
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Kashiwabara
Faculty of Science and Engineering, Waseda University, Shinjuku, Japan.
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Takahashi
Physical Education and Sports Science Academic Group, Nanyang Technological University, Singapore.
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Burns
D020155:3-Hydroxybutyric Acid / Q000097:blood; D019540:Area Under Curve; D001786:Blood Glucose / Q000378:metabolism; D004032:Diet; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005260:Female; D006801:Humans; D007328:Insulin / Q000097:blood; D008875:Middle Aged; D019518:Postprandial Period / Q000502:physiology*; D057185:Sedentary Behavior; D014280:Triglycerides / Q000097:blood*; D016138:Walking / Q000502:physiology*
D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D007328:Insulin; D014280:Triglycerides; D020155:3-Hydroxybutyric Acid