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Title: The effect of prior walking on coronary heart disease risk markers in South Asian and European men
Authors: Arjunan, Saravana P.
Deighton, Kevin
Bishop, Nicolette
King, James A.
Reischak-Oliveira, Alvaro
Rogan, Alice
Sedgewick, Matthew J.
Thackray, Alice E.
Webb, David
Stensel, David J.
Keywords: Cardiovascular disease
Postprandial lipaemia
Physical activity
Issue Date: 2015
Publisher: © Springer-Verlag
Citation: ARJUNAN, S.P. ...et al., 2015. The effect of prior walking on coronary heart disease risk markers in South Asian and European men. European Journal of Applied Physiology, 115(12), pp.3641-3651.
Abstract: Purpose: Heart disease risk is elevated in South Asians possibly due to impaired postprandial metabolism. Running has been shown to induce greater reductions in postprandial lipaemia in South Asian than European men but the effect of walking in South Asians is unknown. Methods: Fifteen South Asian and 14 White European men aged 19-30 years completed two, 2-d trials in a randomised crossover design. On day 1, participants rested (control) or walked for 60 min at approximately 50% maximum oxygen uptake (exercise). On day 2, participants rested and consumed two high fat meals over a 9h period during which 14 venous blood samples were collected. Results: South Asians exhibited higher postprandial triacylglycerol (geometric mean (95% confidence interval) 2.29(1.82 to 2.89) vs. 1.54(1.21 to 1.96) mmol·L-1·hr-1), glucose (5.49(5.21 to 5.79) vs. 5.05(4.78 to 5.33) mmol·L-1·hr-1), insulin (32.9(25.7 to 42.1) vs. 18.3(14.2 to 23.7) μU·mL-1·hr-1) and interleukin-6 (2.44(1.61 to 3.67) vs. 1.04(0.68 to 1.59) pg·mL-1·hr-1) than Europeans (all ES ≥ 0.72, P≤0.03). Between-group differences in triacylglycerol, glucose and insulin were not significant after controlling for age and percentage body fat. Walking reduced postprandial triacylglycerol (1.79(1.52 to 2.12) vs. 1.97(1.67 to 2.33) mmol·L-1·hr-1) and insulin (21.0(17.0 to 26.0) vs. 28.7(23.2 to 35.4) μU·mL-1·hr-1) (all ES ≥ 0.23. P≤0.01), but group differences were not significant. Conclusions: Healthy South Asians exhibited impaired postprandial metabolism compared with White Europeans, but these differences were diminished after controlling for potential confounders. The small-moderate reduction in postprandial triacylglycerol and insulin after brisk walking was not different between the ethnicities.
Description: The final publication is available at Springer via http://dx.doi.org/10.1007/s00421-015-3269-7
Version: Accepted for publication
DOI: 10.1007/s00421-015-3269-7
URI: https://dspace.lboro.ac.uk/2134/19119
Publisher Link: http://dx.doi.org/10.1007/s00421-015-3269-7
ISSN: 1439-6327
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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