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Effect of breaking up sedentary time with callisthenics on endothelial function
Sophie E Carter1,2, Valerie F Gladwell1
1a Centre for Sports and Exercise Science, School of Biological Sciences , University of Essex , Colchester , UK.
Journal of Sports Sciences
|August 26, 2016
Summary
Callisthenics breaks during prolonged sitting increase brachial artery shear rate, suggesting they may improve cardiovascular health. These activity breaks may counteract negative effects of sedentary behavior.
Area of Science:
- Cardiovascular Physiology
- Exercise Science
Background:
- Prolonged sitting impairs endothelial function in lower limb arteries.
- The impact of activity breaks on upper limb arterial function remains understudied.
Purpose of the Study:
- To investigate the effect of callisthenics exercise breaks on brachial artery endothelial function and shear rate after prolonged sitting.
- To compare endothelial function changes between continuous sitting and interrupted sitting conditions.
Main Methods:
- Ten healthy participants underwent two counterbalanced conditions: 1-hour 26-minute continuous sitting or sitting interrupted every 20 minutes with callisthenics.
- Brachial artery flow-mediated dilation (FMD) and shear rate (SR) were measured using ultrasound before and after each condition.
Main Results:
- No significant changes in FMD were observed over time or between conditions.
- Brachial artery SR significantly increased after callisthenics breaks compared to continuous sitting (P=0.02).
Conclusions:
- Callisthenics exercises effectively increase brachial artery shear rate, indicating a potential benefit for upper limb vascular health.
- Intermittent physical activity breaks may mitigate the adverse cardiovascular effects of prolonged sedentary behavior.
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