Tomato powder is more effective than lycopene to alleviate exercise-induced lipid peroxidation in well-trained male athletes: randomized, double-blinded cross-over study

Abstract

Background Consumption of nutritional supplements to optimize recovery is gaining popularity among athletes. Tomatoes contain micronutrients and various bioactive components with antioxidant properties. Many of the health benefits of tomatoes have been attributed to lycopene encouraging athletes to consume pure lycopene supplements. The aim of this study was to compare the effect of tomato powder and lycopene supplement on lipid peroxidation induced by exhaustive exercise in well-trained male athletes. Methods Eleven well-trained male athletes participated in a randomized, double-blinded, crossover study. Each subject underwent three exhaustive exercise tests after 1-week supplementation of tomato powder (each serving contained 30 mg lycopene, 5.38 mg beta-carotene, 22.32 mg phytoene, 9.84 mg phytofluene), manufactured lycopene supplement (30 mg lycopene), or placebo. Three blood samples (baseline, post-ingestion and post-exercise) were collected to assess total anti-oxidant capacity (TAC) and variables of lipid peroxidation including malondialdehyde (MDA) and 8-isoprostane. Data were analyzed using repeated-measures of ANOVA at P < 0.05. Results Tomato powder enhanced total antioxidant capacity (12% increase, P = 0.04). Exhaustive exercise, regardless of supplement/ placebo, elevated MDA and 8-isoprostane levels (P < 0.001). The elevation of 8–isoprostane following exhaustive exercise was lower in the tomato powder treatment compared to the placebo (9% versus 24%, p = 0.01). Furthermore, following exhaustive exercise MDA elevated to a lower extent in tomatoe powder treatment compared to the placebo (20% versus 51%, p = 0.009). However, such differences were not indicated between lycopene and placebo treatments (p > 0.05). Conclusion Beneficial effects of tomato powder on antioxidant capacity and exercise-induced lipid peroxidation may be brought about by a synergistic interaction of lycopene with other bioactive nutrients rather than single lycopene.

Oat (Avena sativa) Extract against Oxidative Stress-Induced Apoptosis in Human Keratinocytes

“…This study confirmed the abundance of bioactive substances in oats, and the Daeyang cultivar had higher amounts of fat-soluble antioxidants than the Choyang oats. We believe these fat-soluble as well as water-soluble bioactive substances in oat synergistically interact, as previously reported in other plant bioactives in vitro [30][31][32] and in vivo [33], to exert antioxidant functions in the biological system.…”

The effects of date seed (Phoenix dactylifera) supplementation on exercise-induced oxidative stress and aerobic and anaerobic performance following high-intensity interval training sessions: a randomised, double-blind, placebo-controlled trial

“…Several studies have shown that isolated bioactive compounds (e.g., vitamin C, vitamin E, and lipoic acid) may have adverse effects on signs and adaptive responses to exercise (19,20) . In contrast, no evidence of such relations following the consumption of antioxidant-rich foods and/or extracts was reported (21,22) . https://doi.org/10.1017/S0007114522002124 Published online by Cambridge University Press…”

Supply of Antioxidants vs. Recruit Firefighters’ Cellular Immune Status: A Randomized Double-Blinded Placebo-Controlled Parallel-Group Trial

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