NDLI: Exercise at lunchtime: effect on glycemic control and oxidative stress in middle-aged men with type 2 diabetes

Content Provider	Springer Nature Link
Author	Haxhi, Jonida Leto, Gaeta Palumbo, Alessandro Scotto Sbriccoli, Paola Guidetti, Laura Fantini, Cristina Buzzetti, Raffaella Caporossi, Daniela Luigi, Luigi Sacchetti, Massimo
Copyright Year	2015
Abstract	Postprandial hyperglycemia and glycemic oscillations have been associated with increased oxidative stress. We sought to investigate the effect of two walking exercise protocols performed during lunchtime on glycemic control and oxidative stress in type 2 diabetic (T2D) patients.Nine T2D patients participated in three randomized crossover trials; a control trial (Con), with participants having a standard lunch followed by their normal daily activities and two exercise trials (ContEx and Splitex). In ContEx, subjects performed 40 min of brisk walking 40 min after lunch, whereas in SplitEx the walking exercise was divided in two 20-min isoenergetic bouts, before and 40 min after meal. 24-h glycemic control was monitored by continuous glucose monitoring. 24-h urinary levels of 8-iso PGF2ɑ were measured as a marker of oxidative stress.SplitEx resulted in less time spent in moderate hyperglycemia after lunch vs ContEx (42.4 ± 38.7 % vs 68.2 ± 32.7 %, P = 0.04). ContEx reduced hyperglycemic time after breakfast consumed the morning after the exercise session (58.3 ± 29.6 Con vs 40.2 ± 33.4 % ContEx, P = 0.02). Compared with Con, 24-h urinary isoprostanes were decreased both in ContEx (−68 %, P = 0.02) and SplitEx (−63 %, P = 0.04).Splitting an exercise session into two bouts, pre- and post-lunch, affects mainly the glycemic response to lunch, while a single-continuous isoenergetic session exerts its effect later in the 24-h period. Both exercise modalities effectively attenuate systemic oxidative stress with similar overall benefits.
Starting Page	573
Ending Page	582
Page Count	10
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	116
Issue Number	3
e-ISSN	14396327
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-12-28
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Exercise timing Postprandial hyperglycemia Brisk walking Urinary isoprostanes Continuous glucose monitoring Human Physiology Occupational Medicine/Industrial Medicine Sports Medicine
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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