Interspersed Upper Body Activity With Sedentary Time Improves Glucose, Insulin

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Thirteen people with obesity participated int he study.
Thirteen people with obesity participated int he study.

HealthDay News — For obese adults, performing short bouts of arm ergometry during prolonged sitting is associated with reduced mean blood glucose and insulin incremental area under the curve (iAUC), according to a study published online in Diabetes, Obesity and Metabolism.

Matthew McCarthy, from the University of Leicester in the United Kingdom, and colleagues randomized 13 adults with obesity to two 7.5 hour experimental conditions: prolonged sitting only, or sitting interspersed with 5 minutes of seated arm ergometry every 30 minutes. Throughout each experimental condition, the iAUC was calculated for glucose and insulin.

The researchers found that the implementation of seated arm ergometry every 30 minutes correlated with significantly reduced mean blood glucose iAUC compared with the prolonged sitting only condition (from 7.4 to 3.1 mmol/L−1/hour). There were also significant reductions in mean insulin iAUC (from 696 to 554 mU/L−1/hour).

"Performing short bouts of arm ergometry during prolonged sitting attenuated postprandial glycemia despite maintaining a seated posture," the authors write. "This may have clinical significance for those with weight bearing difficulty who may struggle with postural change."

Reference

McCarthy M, Edwardson CL, Davies MJ, et al. Breaking up sedentary time with seated upper body activity can regulate metabolic health in obese high risk adults: a randomized crossover trial [published online May 23, 2017]. Diabetes Obes Metab. doi:10.1111/dom.13016

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