Short-term effects of brief stair climbing interruptions on postprandial hyperglycemia during prolonged sitting: a randomized cross-over trial

Figures

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  Fig. 1. Participants screening, inclusion and analysis.

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  Fig. 2. Blood glucose levels across time (0th, 1st, 3rd hour) and condition (SIT and STAIR). p < 0.05 indicates levels of significance. Box plots represent the estimated marginal means of glucose levels with standard error bars. Red line represent median change in the blood glucose levels during the SIT visit while green line represent median change in the blood glucose levels during the STAIR visit.

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  Fig. 3. Reaction times to Deary-Liewald’s simple reaction tests (a) and Choice reaction tests (b) across time and condition. p < 0.05 indicates levels of significance. Box plots represent the estimated marginal means of reaction times (ms) with standard error bars. Red line represent median change in the reaction times during the SIT visit while green line represent median change in the reaction times during the STAIR visit.

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  Fig. 4. Scatter plots with linear regression lines and confidence intervals showing the relation of mean change in the postprandial glucose levels with the mean change in the cognitive functions. While (a) and (b) depicts the relation between change in glucose and attention to simple reaction stimuli at 1st and 2nd hour respectively, (c) and (d) illustrates the relation between change in glucose and attention to choice reaction stimuli at 1st and 2nd hour respectively during SIT visit. Similarly (e), (f), (g) and (h) illustrates relation between glucose and attention to simple and choice reaction stimuli during STAIR visit.

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  Fig. 5. Procedure of the SIGMA trial. The participants underwent two visits: (1) SIT, uninterrupted sitting for two hours simulated work task; (2) STAIR, two minutes of stair climbing bouts every one 30 min of uninterrupted sitting for next two hours after a standardised lunch. The capillary blood glucose and attention levels were measured thrice during the visit: 0th minute, 60th minute and 120th minute of the intervention.