Conclusion : These data suggest that sedentary behavior is not associated with changes in cognitive performance in interventions that intend to reduce sedentary behavior .
Background : It is now well-established that sedentarity has a negative impact on the physiological functioning and health of humans , whereas very little is known about the psychological repercussions , especially in cognitive functioning .
Yet , study ing the cognitive effects of the sedentary lifestyle is particularly relevant in the short term for productivity and in the long term for cognitive health ( accelerated aging ) .
This systematic review therefore aims to make an inventory of the potential cognitive effects of sedentarity at the workplace .
Methods : Pubmed , PsycINFO , Cochrane , Web of Science , and Scopus were search ed for English- language peer- review ed articles published between January 1 , 2000 and December 31 , 2017 to identify studies including sedentary behavior  and objective measures from cognitive domains ( cognitive inhibition , cognitive flexibility , working memory , etc . ) .
Alternating bouts of sitting and standing attenuate postprandial glucose responses.
PURPOSE This study aim ed to examine whether reductions in sitting time through alternating 30-min bouts of sitting and st and ing can reduce postpr and ial glucose , insulin , and triglyceride responses . METHODS Twenty-three overweight/obese sedentary office workers ( 17 males and six females ; mean ± SD : age , 48.2 ± 7.9 yr ; body mass index , 29.6 ± 4.0 kg · m(-2 ) ) undertook two short-term ( 5 d ) experimental conditions in an equal , r and omized ( 1:1 ) order . In a simulated office environment , participants performed typical occupational tasks for 8 h · d(-1 ) while in a 1 ) seated work posture ( control condition ) or 2 ) interchanging between a seated and st and ing work posture every 30 min using an electric , height-adjustable workstation ( intervention condition ) . Fasting and postpr and ial blood sample s after a mixed test drink were collected hourly for 4 h on days 1 and 5 of each condition to assess serum insulin , plasma glucose , and triglycerides . Dietary intake  ( kJ · d(-1 ) ) and physical activity  were st and ardized during each condition . The trial was registered with the Australian New Zeal and Clinical Trials Registry ( ACTRN12611000632998 ) . RESULTS After adjustment for time ( days 1 and 5 ) , incremental area under the analyte time curve differed significantly between conditions for plasma glucose ( P = 0.007 ) but not for serum insulin or plasma triglycerides . Adjusted mean glucose incremental area under the analyte time curve was lowered by 11.1 % after the intervention condition ( 6.38 mM · h(-1 ) ( confidence interval , 5.04 - 7.71 ) ) relative to the control condition ( 7.18 mM · h(-1 ) ( confidence interval , 5.85 - 8.52 ) ) . No temporal changes ( days 1 vs 5 ) between conditions were observed . CONCLUSIONS Alternating st and ing and sitting in 30-min bouts results in modest beneficial effects on postpr and ial glucose responses in overweight/obese office workers
Conclusion : These data suggest that sedentary behavior is not associated with changes in cognitive performance in interventions that intend to reduce sedentary behavior .
Background : It is now well-established that sedentarity has a negative impact on the physiological functioning and health of humans , whereas very little is known about the psychological repercussions , especially in cognitive functioning .
Yet , study ing the cognitive effects of the sedentary lifestyle is particularly relevant in the short term for productivity and in the long term for cognitive health ( accelerated aging ) .
This systematic review therefore aims to make an inventory of the potential cognitive effects of sedentarity at the workplace .
Methods : Pubmed , PsycINFO , Cochrane , Web of Science , and Scopus were search ed for English- language peer- review ed articles published between January 1 , 2000 and December 31 , 2017 to identify studies including sedentary behavior  and objective measures from cognitive domains ( cognitive inhibition , cognitive flexibility , working memory , etc . ) .