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- Title
Effects of Breaking Sitting by Standing and Acute Exercise on Postprandial Oxidative Stress.
- Authors
Masaki Takahashi; Masashi Miyashita; Jong-Hwan Park; Shizuo Sakamoto; Katsuhiko Suzuki
- Abstract
Background: Sedentary behavior, which includes sitting and TV viewing, has been identified as an independent risk factor for type 2 diabetes and cardiovascular disease. Breaking sedentary behavior improves metabolic health such as postprandial glycaemia and insulinemia. However, the mechanisms underlying this effect are unclear. Objectives: Here, we examined whether breaking sitting by standing and acute exercise reduces postprandial oxidative stress. Patient and Methods: Fifteen participants performed 3 trials (sitting, standing, and exercise), each lasting 2 days, in a randomised order. On day one of sitting trial, participants sat in a chair. For the standing trial, the participants stood 6 times, fora 45-minute period each time. For the exercise trial, the participants walked or ran at approximately 60% of age-predicted maximum heart rate for 30 minutes. On day two of each trial, participants rested and consumed the standardised breakfast and lunch. Blood samples were collected in the morning and afternoon on day one, and fasting and at 2,4, and 6 hours postprandially on day two. Results: The concentrations of serum derivatives of reactive oxygen metabolites (d-ROMs) measured at 4 hours (P = 0.064) and 6 hours (P = 0.071) tended to be higher than that in the fasting state in the sitting trial, but not standing and exercise trial (two-factor analysis of variance (ANOVA), trial x time interaction, P = 0.006). Conclusions: Our results indicate the importance of reducing sitting time for improving postprandial oxidative stress status.
- Subjects
TYPE 2 diabetes risk factors; REACTIVE oxygen species; ANALYSIS of variance; BODY weight; CARDIOVASCULAR diseases risk factors; CROSSOVER trials; EXERCISE; GOODNESS-of-fit tests; INGESTION; RESEARCH funding; SITTING position; STANDING position; STATISTICS; STATURE; DATA analysis; OXIDATIVE stress; BODY mass index; RANDOMIZED controlled trials; SEDENTARY lifestyles; DATA analysis software; DESCRIPTIVE statistics; ONE-way analysis of variance
- Publication
Asian Journal of Sports Medicine, 2015, Vol 6, Issue 3, p1
- ISSN
2008-000X
- Publication type
Article
- DOI
10.5812/asjsm.24902