The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowers
Background The aim of this study was to analyse the effect of pomegranate juice (POM) supplementation on the levels of selected pro-inflammatory cytokines, hepcidin and markers of iron metabolism in well-trained rowers. Method The double-blind placebo-controlled study included 19 members of the Poli...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-07-01
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| Series: | Journal of the International Society of Sports Nutrition |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1186/s12970-018-0241-z |
| _version_ | 1797685025404092416 |
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| author | A. Urbaniak P. Basta K. Ast A. Wołoszyn J. Kuriańska – Wołoszyn Ewa Latour A. Skarpańska – Stejnborn |
| author_facet | A. Urbaniak P. Basta K. Ast A. Wołoszyn J. Kuriańska – Wołoszyn Ewa Latour A. Skarpańska – Stejnborn |
| author_sort | A. Urbaniak |
| collection | DOAJ |
| description | Background The aim of this study was to analyse the effect of pomegranate juice (POM) supplementation on the levels of selected pro-inflammatory cytokines, hepcidin and markers of iron metabolism in well-trained rowers. Method The double-blind placebo-controlled study included 19 members of the Polish Rowing Team. The athletes were randomised into the supplemented group (n = 10), receiving 50 ml of standardised POM daily for two months, or the placebo group (n = 9). The subjects performed a 2000 m test on the rowing ergometer at the start of the project (baseline) and end of follow-up period. Blood samples from the antecubital vein were obtained three times during each trial: prior to the exercise, one minute after the test, and following a 24 h recovery. Results The study documented the beneficial effect of supplementation with pomegranate fruit juice on TAC (P < 0.002). During the resting period, TAC level in the supplemented group was significantly higher than in the placebo group (x ± SD, 2.49 ± 0.39 vs. 1.88 ± 0.45, P < 0.05). The ergometric test conducted at baseline demonstrated a significant post-exercise increase in the concentrations of soluble transferrin receptors (P < 0.04), iron (P < 0.002) and IL-6 (P < 0.02), and to a significant post-exercise decrease in TAC. A significant increase in IL-6 concentration was also observed 24 h post-exercise. The exercise test conducted at the end of the follow-up period resulted in a significant decrease in TBIC and a significant increase in UIBC (P < 0.001), observed in both groups, both immediately post-exercise and after the resting period. Conclusion Supplementation with POM contributed to a significant strengthening of plasma antioxidant potential in the group of well-trained rowers, but had no effect on iron metabolism markers. |
| first_indexed | 2024-03-12T00:38:23Z |
| format | Article |
| id | doaj.art-8a6b0ec9c79b4eb3b0f4269900d56e45 |
| institution | Directory Open Access Journal |
| issn | 1550-2783 |
| language | English |
| last_indexed | 2024-03-12T00:38:23Z |
| publishDate | 2018-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of the International Society of Sports Nutrition |
| spelling | doaj.art-8a6b0ec9c79b4eb3b0f4269900d56e452023-09-15T09:19:29ZengTaylor & Francis GroupJournal of the International Society of Sports Nutrition1550-27832018-07-0115110.1186/s12970-018-0241-z12130054The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowersA. Urbaniak0P. Basta1K. Ast2A. Wołoszyn3J. Kuriańska – Wołoszyn4Ewa Latour5A. Skarpańska – Stejnborn6Department of Morphological and Health Sciences, Faculty of Physical Culture in Gorzów Wlkp. PolandDepartment of Water Sports, Faculty of Physical Culture in Gorzów Wlkp. PolandDepartment of Morphological and Health Sciences, Faculty of Physical Culture in Gorzów Wlkp. PolandJacob of Paradies University in Gorzów WielkopolskiJacob of Paradies University in Gorzów WielkopolskiFaculty of Physical Culture in Gorzów WlkpDepartment of Morphological and Health Sciences, Faculty of Physical Culture in Gorzów Wlkp. PolandBackground The aim of this study was to analyse the effect of pomegranate juice (POM) supplementation on the levels of selected pro-inflammatory cytokines, hepcidin and markers of iron metabolism in well-trained rowers. Method The double-blind placebo-controlled study included 19 members of the Polish Rowing Team. The athletes were randomised into the supplemented group (n = 10), receiving 50 ml of standardised POM daily for two months, or the placebo group (n = 9). The subjects performed a 2000 m test on the rowing ergometer at the start of the project (baseline) and end of follow-up period. Blood samples from the antecubital vein were obtained three times during each trial: prior to the exercise, one minute after the test, and following a 24 h recovery. Results The study documented the beneficial effect of supplementation with pomegranate fruit juice on TAC (P < 0.002). During the resting period, TAC level in the supplemented group was significantly higher than in the placebo group (x ± SD, 2.49 ± 0.39 vs. 1.88 ± 0.45, P < 0.05). The ergometric test conducted at baseline demonstrated a significant post-exercise increase in the concentrations of soluble transferrin receptors (P < 0.04), iron (P < 0.002) and IL-6 (P < 0.02), and to a significant post-exercise decrease in TAC. A significant increase in IL-6 concentration was also observed 24 h post-exercise. The exercise test conducted at the end of the follow-up period resulted in a significant decrease in TBIC and a significant increase in UIBC (P < 0.001), observed in both groups, both immediately post-exercise and after the resting period. Conclusion Supplementation with POM contributed to a significant strengthening of plasma antioxidant potential in the group of well-trained rowers, but had no effect on iron metabolism markers.http://dx.doi.org/10.1186/s12970-018-0241-zpomegranatestrenuous exercisetraininginflammation |
| spellingShingle | A. Urbaniak P. Basta K. Ast A. Wołoszyn J. Kuriańska – Wołoszyn Ewa Latour A. Skarpańska – Stejnborn The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowers Journal of the International Society of Sports Nutrition pomegranate strenuous exercise training inflammation |
| title | The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowers |
| title_full | The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowers |
| title_fullStr | The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowers |
| title_full_unstemmed | The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowers |
| title_short | The impact of supplementation with pomegranate fruit (Punica granatum L.) juice on selected antioxidant parameters and markers of iron metabolism in rowers |
| title_sort | impact of supplementation with pomegranate fruit punica granatum l juice on selected antioxidant parameters and markers of iron metabolism in rowers |
| topic | pomegranate strenuous exercise training inflammation |
| url | http://dx.doi.org/10.1186/s12970-018-0241-z |
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