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Title: Exercise intensity and postprandial health outcomes in adolescents
Authors: Bond, Bert
Williams, Craig A.
Isic, Carly
Jackman, Sarah R.
Tolfrey, Keith
Barrett, Laura A.
Barker, Alan R.
Keywords: Cardiovascular disease (CVD)
High-intensity exercise
Triacylglycerol (TAG)
Young people
Physical activity
Issue Date: 2015
Publisher: © Springer
Citation: BOND, B. ...et al., 2015. Exercise intensity and postprandial health outcomes in adolescents. European Journal of Applied Physiology, 115(5), pp. 927-936.
Abstract: © 2014, Springer-Verlag Berlin Heidelberg. Method: Twenty adolescents (10 male, 14.3 ± 0.3 years) completed three 1-day trials: (1) rest (CON); (2) 8 × 1 min cycling at 90 % peak power with 75 s recovery (HIIE); (3) cycling at 90 % of the gas exchange threshold (MIE), 1 h before consuming a high-fat milkshake (1.50 g fat and 80 kJ kg<sup>−1</sup>). Postprandial TAG, SBP and fat oxidation were assessed over 4 h Results : Compared to CON, the incremental area under the curve for TAG (IAUC-TAG) was not significantly lowered in HIIE [P = 0.22, effect size (ES) = 0.24] or MIE (P = 0.65, ES = 0.04) for boys. For girls, HIIE and MIE lowered IAUC-TAG by 34 % (P = 0.02, ES = 0.58) and 38 % (P = 0.09, ES = 0.73), respectively, with no difference between HIIE and MIE (P = 0.74, ES = 0.14). Changes in TAG were not related to energy expenditure during exercise or postprandial fat oxidation. Postprandial SBP (total-AUC pooled for both sexes) was lower in HIIE compared to CON (P = 0.01, ES = 0.68) and MIE (P = 0.02, ES = 0.60), with no difference between MIE and CON (P = 0.45, ES = 0.14). Purpose: The effect of exercise intensity and sex on postprandial risk factors for cardiovascular disease in adolescents is unknown. We examined the effect of a single bout of work-matched high-intensity interval exercise (HIIE) and moderate-intensity exercise (MIE) on postprandial triacylglycerol (TAG) and systolic blood pressure (SBP) in adolescents. Conclusion: A single bout of HIIE and MIE, performed 1 h before an HFM, can meaningfully attenuate IAUC-TAG in girls but not boys. Additionally, HIIE, but not MIE, may lower postprandial SBP in normotensive adolescents.
Description: The final publication is available at Springer via http://dx.doi.org/10.1007/s00421-014-3074-8
Sponsor: This study was supported by the Sport and Health Sciences Research Committee, College of Life and Environmental Sciences, University of Exeter.
Version: Accepted for publication
DOI: 10.1007/s00421-014-3074-8
URI: https://dspace.lboro.ac.uk/2134/20854
Publisher Link: http://dx.doi.org/10.1007/s00421-014-3074-8
ISSN: 1439-6319
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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