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The effect of mode of transport on intraindividual variability in glycemic and insulinemic response testing

El-Chab, A. and Clegg, M. E. (2018) The effect of mode of transport on intraindividual variability in glycemic and insulinemic response testing. International Journal of Sport Nutrition and Exercise Metabolism, 28 (3). pp. 253-258. ISSN 1543-2742

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To link to this item DOI: 10.1123/ijsnem.2017-0250


The effect of light- to moderate-intensity exercise, such as that used as a mode of transport, on glycemic response testing is unclear. The aim was to investigate the effect of acute exercise (walking and cycling), simulated to act as a mode of transport, prior to glycemic response testing on the intraindividual variability of blood glucose and insulin. A total of 11 male participants visited the laboratory four times. Initially, they undertook a maximum oxygen uptake and two submaximal exercise tests. For the other three visits, they either rested (25 min), cycled, or walked 5 km followed by a 2-hr glycemic response test after consuming a glucose drink (50 g of available carbohydrate). The mean coefficient of variation of each transport group was below the International Organization for Standardization cutoff of 30%. The highest mean coefficient of variation of glucose area under the curve (AUC) was between the rest and the walking trials (30%) followed by walking and cycling (26%). For insulin AUC, the highest mean coefficient of variation was between walking and cycling (28%) followed by rest and walking (24%). The lowest glucose AUC and insulin AUC were between rest and cycling (25% and 14%, respectively). This study did not find differences (p > .05) between the conditions for glucose AUC (at 120 min, rest: 134.5 +/- 104.6 mmol/L; walking: 115.5 +/- 71.7 mmol/L; and cycling: 142.5 +/- 75 mmol/L) and insulin AUC (at 120 min, rest: 19.45 +/- 9.12 mumol/ml; walking: 16.49 +/- 8.42 mumol/ml; and cycling: 18.55 +/- 9.23 mumol/ml). The results indicate no difference between the tests undertaken; however, further research should ensure the inclusion of two rest conditions.

Item Type:Article
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Human Nutrition Research Group
ID Code:80382
Publisher:Human Kinetics


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