Abstract
We carried out three types of 2-hr experimental sessions with middle-aged and older adults with Type 2 diabetes in order to examine the acute effect of interrupting prolonged sitting with varying periods of standing on postprandial glycemia and blood pressure (BP): (a)prolonged sitting after breakfast; (b)standing for 10min, 30min after breakfast; and (c)standing for 20min, 30min after breakfast. Glucose and BP were assessed before and after breakfast. A generalized linear model revealed no significant differences for the incremental area under the curve of glucose between standing for 10min, 30min after breakfast, versus prolonged sitting after breakfast (β = -4.5mg/dl/2hr, 95% CI [-17.3, 8.4]) and standing for 20min, 30min after breakfast, versus prolonged sitting after breakfast (β = 0.9mg/dl/2hr, 95% CI [-11.9, 13.7]). There was no difference in area under the curve of systolic and diastolic BP among the sessions. Interrupting prolonged sitting time with 10 or 20min of standing 30min after breakfast does not attenuate postprandial glycemia or BP in middle-aged and older adults with Type 2 diabetes.
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