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

O’Doherty, Alasdair; Jones, Huw S.; Sathyapalan, Thozhukat; Ingle, Lee; Carroll, Sean

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 (73g fat, 33g carbohydrate) with blood sampled at baseline and hourly for 4 h after OFTT. Two OFTT contained 25g freeze-dried strawberries and two contained strawberry flavouring (placebo). Participants performed 40 minutes 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, p= 0.001). TAG AUC was not different between the strawberry and placebo conditions (CI= -1.3 to 0.6, 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, 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.

Citation

O’Doherty, A., Jones, H. S., Sathyapalan, T., Ingle, L., & Carroll, S. (2017). The effects of acute interval exercise and strawberry intake on postprandial lipemia. Medicine and Science in Sports and Exercise, 49(11), 2315-2323. https://doi.org/10.1249/MSS.0000000000001341

• Journal Article Type: Article
• Acceptance Date: May 30, 2017
• Publication Date: Nov 1, 2017
• Deposit Date: Jun 28, 2017
• Publicly Available Date: Jun 12, 2018
• Journal: Medicine & science in sports & exercise
• Print ISSN: 0195-9131
• Electronic ISSN: 1530-0315
• Publisher: Lippincott, Williams & Wilkins
• Peer Reviewed: Peer Reviewed
• Volume: 49
• Issue: 11
• Pages: 2315-2323
• DOI: https://doi.org/10.1249/MSS.0000000000001341
• Keywords: OFTT; Polyphenols; High-intensity interval exercise; Triglycerides; Lipids
• Public URL: https://hull-repository.worktribe.com/output/453085
• Publisher URL: http://journals.lww.com/acsm-msse/Abstract/publishahead/The_Effects_of_Acute_Interval_Exercise_and.97184.aspx
• Additional Information: This is a description of an article which has been published in: Medicine & science in sports & exercise