Iron status markers are only transiently affected by a football game

Jamurtas, Athanasios Z.; Douroudos, Ioannis; Deli, Chariklia K.; Draganidis, Dimitrios; Chatzinikolaou, Athanasios; Mohr, Magni; Avloniti, Alexandra; Barbero-Álvarez, José C.; Margonis, Konstantinos; Mavropalias, Georgios; Stampoulis, Theodoros; Giannakidou, Dimitra; Flouris, Andreas D.; Koutedakis, Yiannis; Fatouros, Ioannis G.

doi:10.1080/02640414.2015.1064154

Cited by 14 publications

(14 citation statements)

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“…The increased Fe levels in nocturnal exhaustive treadmill exercise have also been shown (23). However, in contrast to our results a transient decreases in iron levels 2 hours after soccer matches has been reported (24).…”

Section: Zn Levelscontrasting

confidence: 51%

Effects of morning and nocturnal soccer matches on levels of some trace elements in young trained males

Algül

Bengü

Baltaci

et al. 2019

Cell Mol Biol (Noisy-le-grand)

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The aim of this study was to comparatively evaluate effect of morning and nocturnal soccer matches induced metabolic stress on plasma levels of iron (Fe), copper (Cu) and zinc (Zn). Twenty male footballers performed two soccer matches in morning and at night on different days. Blood samples were taken before and after match. The levels of Fe, Zn and Cu were measured through an atomic absorption spectrophotometry. Metabolic stress was evaluated by altered malondialdehyde (MDA) levels that measured using High Performance Liquid Chromatography. In morning and at nocturnal soccer matches, levels of MDA (36% and 27%), Fe (37.4% and 38.9%) and Cu (34.8% and 26.8%) were all increased in all subjects, respectively. However, Zn level decreased-4.5 % in morning (n=10 subjects) and-9.4% at nocturnal (n=12 subjects) soccer matches. In addition, Cu/Zn ratio increased significantly 46.6% in morning and 36.6% at nocturnal soccer matches. Soccer match has significant effects on levels of MDA, Fe and Cu but not Zn levels. The results of this study showed that morning soccer match significantly alters levels of MDA and Cu and Cu/Zn ratio compared to nocturnal soccer match.

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Section: Zn Levelscontrasting

confidence: 51%

Effects of morning and nocturnal soccer matches on levels of some trace elements in young trained males

Algül

Bengü

Baltaci

et al. 2019

Cell Mol Biol (Noisy-le-grand)

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“…This result supports previous studies reporting that beetroot is an excellent source of iron (10). Whereas, in the control group, the levels of iron decreased after 6 weeks of soccer training (P < 0.05) which can be linked to their menstrual cycles (4) and soccer trainings (17). In compared to control group, MCV levels showed mild increases in 5 subjects in the experimental group.…”

Section: Discussionmentioning

confidence: 81%

“…Whereas, in the control group, levels of ferritin was decreased. In other words, there was a mild decrease in the ferritin levels of subjects (P < 0.05) that can be linked to their menstrual cy- cles (4) and soccer training (17). In the experimental group, there was a significant decrease in TIBC levels (P < 0.05); this decrease in TIBC may be related to the improvement of iron stores as a result of beetroot juice consumption, whereas in the control group, the levels of TIBC decreased (P < 0.05).…”

Section: Discussionmentioning

confidence: 97%

The Effects of Consuming 6 Weeks of Beetroot Juice (Beta vulgaris L.) on Hematological Parameters in Female Soccer Players

Lotfi

Azizi

Tahmasbi

et al. 2018

J Kermanshah Univ Med Sci

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Background: The present study aimed to investigate the effects of consuming 6 weeks of beetroot juice (Beta vulgaris L.) on hematological parameters in female soccer players. Methods: Twenty female soccer players were selected randomly and assigned into two groups: Experimental (beetroot juice, n = 10) and control (placebo, n = 10). Subjects trained for six weeks (three 90-min sessions per week) by consuming 200 mL of juice 2 hours prior to training. Blood samples were collected and investigated (Hb, Hct, RBC, Iron, MCV, Ferritin and TIBC) in pre-and posttest. Paired Sample t-test and Independent Sample t-test were used for comparision within and between groups, respectively. Statistical significance was P ≤ 0.05. Results: Results showed that the experimental group had significant increases in the Hb, Hct, RBC, iron, and ferritin levels (P < 0.05). No significant difference was detected in MCV levels (t =-1.10, P = 0.29) and there was a significant decrease in the TIBC (t = 4.99, P = 0.001). In the control group, there were significant differences in (Hct, iron, ferritin and TIBC) (P < 0.05). In addition, there were significant differences in (Hb, Hct, RBC, iron, ferritin and TIBC) levels between experimental and control subjects (P < 0.05), but there was no significant difference in MCV (t = 1.11, P = 0.28). Conclusions: Since beetroot juice consumption has significant effects on the levels of some hematological parameters in female soccer players, it can be used to prevent and improve anemia among these athletes.

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“…Computation of YYIR2 test global means, SDs and quantiles (Figure 3) involved 116 studies/subgroups reporting on 2,478 participants (median age = 23.2 years, IQR = 20.7–26.0 years) (Young et al, 2005; De Souza et al, 2006; Krustrup et al, 2006; Thomas et al, 2006; Mohr et al, 2007, 2016; Iaia et al, 2008, 2015, 2017; Morton et al, 2009; Rampinini et al, 2010; Rebelo et al, 2010; Thomassen et al, 2010; Christensen et al, 2011; Chuman et al, 2011; Mooney et al, 2011, 2013a,b; Roberts et al, 2011; Ueda et al, 2011; Gunnarsson et al, 2012; Ingebrigtsen et al, 2012, 2013, 2014; Nakamura et al, 2012; Saunders et al, 2012; Wells et al, 2012, 2014; Bassini et al, 2013; Buchheit et al, 2013; McGawley and Andersson, 2013; Mohr and Krustrup, 2013, 2014, 2016; Owen et al, 2013; Pivovarniček et al, 2013; Yuki et al, 2013; Fanchini et al, 2014; Karavelioglu et al, 2014; Lollo et al, 2014; Miloski et al, 2014; Nunes et al, 2014; Sampaio et al, 2014; Skovgaard et al, 2014; Brocherie et al, 2015a,b; Cholewa et al, 2015; Coelho et al, 2015; Gatterer et al, 2015; Hogarth et al, 2015a,b; Jamurtas et al, 2015; Krustrup and Mohr, 2015; Leme et al, 2015; Mara et al, 2015; Matta et al, 2015; McLean et al, 2015; Michalsik et al, 2015; Mohr, 2015; Rogan, 2015; Stein et al, 2015; Boer and Van Aswegen, 2016; Bouaziz et al, 2016; Chan et al, 2016; Inness et al, 2016; Joo, 2016; Kilit and Arslan, 2016; Lockie et al, 2016a,b,...…”

Section: Resultsmentioning

confidence: 99%

The Yo-Yo Intermittent Tests: A Systematic Review and Structured Compendium of Test Results

Schmitz¹,

Pfeifer²,

Kreitz³

et al. 2018

Front. Physiol.

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Background: Although Yo-Yo intermittent tests are frequently used in a variety of sports and research studies to determine physical fitness, no structured reference exists for comparison and rating of test results. This systematic review of the most common Yo-Yo tests aimed to provide reference values for test results by statistical aggregation of published data.Methods: A systematic literature search for articles published until August 2017 was performed in MEDLINE, Web of Science, SPORTDiscus and Google Scholar. Original reports on healthy females and males ≥16 years were eligible for the analysis. Sub-maximal test versions and the Yo-Yo Intermittent Recovery Level 1 Children's test (YYIR1C) were not included.Results: 248 studies with 9,440 participants were included in the structured analysis. The Yo-Yo test types most frequently used were the Yo-Yo Intermittent Recovery Level 1 (YYIR1, 57.7%), the Yo-Yo Intermittent Recovery Level 2 (YYIR2, 28.0%), the Yo-Yo Intermittent Endurance Level 2 (YYIE2, 11.4%), and the Yo-Yo Intermittent Endurance Level 1 (YYIE1, 2.9%) test. For each separate test, reference values (global means and percentiles) for sports at different levels and both genders were calculated.Conclusions: Our analysis provides evidence that Yo-Yo intermittent tests reference values differ with respect to the type and level of sport performed.The presented results may be used by practitioners, trainers and athletes to rate Yo-Yo intermittent test performance levels and monitor training effects.

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Iron status markers are only transiently affected by a football game

Cited by 14 publications

References 50 publications

Effects of morning and nocturnal soccer matches on levels of some trace elements in young trained males

Effects of morning and nocturnal soccer matches on levels of some trace elements in young trained males

The Effects of Consuming 6 Weeks of Beetroot Juice (Beta vulgaris L.) on Hematological Parameters in Female Soccer Players

The Yo-Yo Intermittent Tests: A Systematic Review and Structured Compendium of Test Results

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