The effects of acute interval exercise and strawberry intake on postprandial lipaemia

O'Doherty, Alasdair, Jones, Huw, Sathyapalan, Thozhukat, Ingle, Lee and Carrol, Sean (2017) The effects of acute interval exercise and strawberry intake on postprandial lipaemia. Medicine & Science in Sports & Exercise. ISSN 0195-9131

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Official URL: http://doi.org/10.1249/MSS.0000000000001341

Abstract

Purpose:
Raised postprandial triglycerides (TAG) and related oxidative stresses are strongly associated with increased cardiovascular disease (CVD) risk. Acute exercise and strawberry ingestion independently ameliorate postprandial lipid excursions and oxidative stress. However, the combined effects of these lifestyle interventions is unknown. We investigated whether acute exercise and strawberry consumption improved postprandial responses to an oral fat tolerance test (OFTT) in overweight/obese males.

Methods:
Overweight/obese adult males underwent four separate OFTT (73 g fat, 33 g carbohydrate) with blood sampled at baseline and hourly for 4 h after OFTT. Two OFTT contained 25 g freeze-dried strawberries and two contained strawberry flavouring (placebo). Participants performed 40 min of submaximal high intensity interval cycling exercise (HIIE) 16 h before one strawberry and one placebo OFTT, and rested before the remaining two OFTT. Serum TAG was analysed and TAG area under curve (AUC) and incremental AUC (iAUC) were calculated. Oxidative stress markers were measured at baseline and 4 h. Differences between conditions (strawberry/placebo and exercise/rest) were assessed using repeated measures ANOVA.

Results:
Ten males (Age, 31.5 IQR 17.8 years; BMI, 29.9 ±1.8 kg.m-2) completed the study. TAG AUC was 1.5 mmol.4h-1.L-1 lower for the exercise conditions compared to the rest conditions (95 % confidence interval [CI]= -2.3 to -0.8 mmol.4h-1.L-1, p= 0.001). TAG AUC was not different between the strawberry and placebo conditions (CI= -1.3 to 0.6 mmol.4h-1.L-1, p= 0.475). TAG iAUC was 0.5 mmol.4h-1.L-1 greater for the strawberry compared to the placebo conditions (CI= 0.1 to 1.0 mmol.4h-1.L-1, p= 0.021). There were no changes in markers of lipid related oxidative stress (P> 0.05).

Conclusion:
Acute submaximal HIIE appears effective in reducing postprandial lipaemia in overweight/obese adult males. However, strawberry ingestion did not improve postprandial TAG.

Item Type: Article
Subjects: B100 Anatomy, Physiology and Pathology
B900 Others in Subjects allied to Medicine
C600 Sports Science
Department: Faculties > Health and Life Sciences > School of Life Sciences > Sport, Exercise and Rehabilitation
Depositing User: Alasdair O'Doherty
Date Deposited: 24 Jul 2017 11:14
Last Modified: 24 Jul 2017 11:38
URI: http://nrl.northumbria.ac.uk/id/eprint/31386

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