Sitting + light-intensity activity breaks: Participants rose from the seated position every 20 min throughout the experimental period (to achieve three breaks per hour), and completed a 2-min bout of light-intensity walking on a motorized treadmill with a level surface at 3.2 km/h.
During bouts of light sprinkling, concertgoers headed for the galleries of Mass MoCA to move through a maze of art exhibits that commanded gestures as tall and wide as the industrial-sized spaces that housed them.
We examined the acute effects on postprandial glucose and insulin levels of uninterrupted sitting compared with sitting interrupted by brief bouts of light- or moderate-intensity walking.
Interrupting sitting time with short bouts of light- or moderate-intensity walking lowers postprandial glucose and insulin levels in overweight/obese adults.
We examined the acute effects of uninterrupted sitting on postprandial plasma glucose and serum insulin, compared with sitting interrupted by short 2-min bouts of light- or moderate-intensity walking in overweight middle-aged adults.
Physical activity was measured at all three time points using a self completion seven day recall diary in which participants were asked to record 10 minute bouts of light, moderate, and vigorous physical activity in the week before the assessment.
A recent study showed that interrupting sitting time every 20 min with short 2 min bouts of light- or moderate-intensity walking lowered postprandial glucose and insulin levels in overweight/obese adults [ 8].
(ID 1) Used coping strategies were: doing only as much as they could or trying to avoid activities that could lead to dyspnoea, and performing short bouts of light to moderate intensity activities in order to maintain a balance between rest and activity.
In middle-aged women, 15- and 40-min bouts of light-intensity activity both led to a reduction in the acute blood glucose response to a carbohydrate-rich meal relative to 2-h seated rest (23).
Overweight/obese adults (n = 19), aged 45 65 years, were recruited for a randomized three-period, three-treatment acute crossover trial: 1) uninterrupted sitting; 2) seated with 2-min bouts of light-intensity walking every 20 min; and 3) seated with 2-min bouts of moderate-intensity walking every 20 min. A standardized test drink was provided after an initial 2-h period of uninterrupted sitting.
6 In a laboratory-controlled trial conducted over an 8 h period, interrupting sitting time every 20 min with short 2 min bouts of light-intensity or moderate-intensity walking was shown to lower postprandial glucose and insulin levels in overweight/obese adults.
