Dataset Information

Effect of 8-week of dietary micronutrient supplementation on gene expression in elite handball athletes.

ABSTRACT: PURPOSE:A study was made of the changes in gene expression in elite handball athletes, comparing gene modulation before, after and in the absence of an 8-week nutritional intervention with multivitamin/mineral supplements. METHODS:Thirteen elite handball athletes (aged 22.9 ± 2.7 years) and 13 sedentary controls (aged 20.9 ± 2.8 years) were included. Three timepoints were established: T0 (baseline conditions); T8 (after 8 weeks of supplementation with a multivitamin/mineral complex); and T16 (after 8 weeks in the absence of supplementation). The expressions of a total 112 of genes were evaluated by RT-qPCR analysis with the QuantStudioTM 12K Flex Real-Time PCR System. RESULTS:The analysis revealed different gene regulation profiles of genes implicated in cell communication, cell energy metabolism, inflammation and the immune system, oxidative stress and muscle function in athletes compared to sedentary controls under resting conditions (upregulated genes: effect size = large, ?2 = 1.011 to 1.398, p < 0.05; downregulated genes: effect size = large, ?2 = 0.846 and 1.070, p < 0.05, respectively). The nutritional intervention encouraged gene upregulation in elite athletes (p < 0.05). In a follow-up investigation, the IRAK1, CD81, ITGB1, ACADS PDHA2 and GPX1 genes were downregulated in athletes, with a moderate main effect for time-by-group interaction (?P2 = 0.099 to 0.133; p < 0.05). Additionally, nutritional genes such as MTHFR and THTPA revealed a moderate effect over all the timepoints and group interaction in the study (?P2 = 0.070 to 0.092; p < 0.05). CONCLUSIONS:Elite handball athletes showed a different expression profile in reference to key genes implicated in several sports performance-related functions compared to the sedentary controls, in addition to modulation of gene expression after multivitamin/mineral supplementation.

SUBMITTER: Molina-Lopez J

PROVIDER: S-EPMC7194438 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Effect of 8-week of dietary micronutrient supplementation on gene expression in elite handball athletes.

Molina-López Jorge J Ricalde María Antonieta Quispe MAQ Hernández Basilio Valladares BV Planells Antonio A Otero Roberto R Planells Elena E

PloS one 20200501 5

<h4>Purpose</h4>A study was made of the changes in gene expression in elite handball athletes, comparing gene modulation before, after and in the absence of an 8-week nutritional intervention with multivitamin/mineral supplements.<h4>Methods</h4>Thirteen elite handball athletes (aged 22.9 ± 2.7 years) and 13 sedentary controls (aged 20.9 ± 2.8 years) were included. Three timepoints were established: T0 (baseline conditions); T8 (after 8 weeks of supplementation with a multivitamin/mineral comple ...[more]

PMID: 32357196

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Project description:ContextWhen playing handball, the preservation of the subacromial space, which can be quantified by the acromiohumeral distance (AHD), plays a crucial role for shoulder health of handball players. Acute effects of handball-specific loading on the subacromial space with consideration of individual adaptions resulting from long-term handball-specific loading experience have yet to be determined in order to prevent injuries such as e. g. an impingement of the supraspinatus tendon.ObjectiveTo (1) assess the acute effects of handball-specific loading on the AHD in healthy experienced handball players (HB) and non-handball experienced athletes (CG) and (2) to assess the AHD behavior in relation to individual intrinsic factors to identify possible risk factors and the effect of handball-specific experience associated adaptations.Participants20 HB (10m; 10f) and 20 CG (10m; 10f); 24 ± 5 years.InterventionHandball-specific loading protocol.Main outcome measuresThe AHD was measured by ultrasonography at 0° and 60° abduction pre and post intervention. Isometric shoulder strength was measured with hand-held dynamometry. Shoulder range of motion (ROM) was measured with goniometry.ResultsHandball-specific loading led to significantly reduced AHD in the dominant shoulder in the 60° abducted position in both groups (HB: -1.7 ± 2.0 mm; p = 0.001, d = 0.69; CG: -1.1 ± 2.0 mm; p = 0.024, d = 0.37) and in the non-dominant shoulder in 0° (-0.7 ± 1.5 mm; p = 0.038, d = 0.35) and 60° abducted position (-1.3 ± 1.8 mm; p = 0.004, d = 0.69) in HB only. Handball-specific loading enhanced AHD reduction when elevating the shoulder from 0° to 60° in both groups and arms. Larger shoulder abduction strength affected the maintenance of the AHD positively. HB demonstrated less shoulder strength compared to CG, while ROM did not differ.ConclusionsHandball-specific loading can affect the ability to preserve the subacromial space which might put handball players at risk for shoulder injuries. Poor shoulder strength can aggravate this mechanism. Therefore, implementation of strengthening exercises of the external rotator and abductor muscles in the training schedule may improve shoulder health of handball players.

Project description:The effect of pre and periconceptional multiple micronutrient supplementation on methylation of CpG loci within CpG islands associated with 14,000 genes across the human genome has been investigated in the offspring of a cohort of Gambian women participating in a controlled double blinded trial. Methylation levels in placebo and micronutrient supplemented cohorts were compared in genomic DNA from cord blood (35 placebo and 21 micronutrient supplemented) and in circulating blood samples (14 placebo and 9 micronutrient supplemented) drawn from the same cohort at 9 months old. A small number of differentially methylated CpG loci were identified in cord blood (14 in males and 21 in females) and a larger number in the 9 month infant comparison (108 in males and 106 in females). Seven differentially methylated loci in males and 8 in females persisted from cord to infant. These findings indicate that micronutrient supplementation pre-conception or early in embryonic development is potentially associated with programming of gene activity at birth, which is maintained into early infanthood. Strikingly, the loci affected by micronutrient supplementation differed between males and females, with no shared changes in cord blood and only 5 shared changes at 9 months. Additionally, a large number of CpG loci showed variation in methylation level when comparing 9-month samples to cord blood samples. These postnatal changes were more consistent between sexes, with 85% of female alterations being found as a subset of male changes in the placebo cohort and 62% of the female changes shared with males in the supplemented cohort. Taken together, the results suggest that there is a core developmental program shared between the sexes that is unaffected by nutrient supplementation, but that there are also sex-specific developmental changes which are altered under conditions of micronutrient supplementation and deficiency. Bisulphite converted DNA from 59 cord (36 placebo and 23 treated) and 25 infant peripheral blood (15 placebo and 10 treated) samples were hybridised to the Illumina Infinium 27k Human Methylation Beadchip v1.2. (For further analysis, five were excluded during quality control leaving 56 cord (35 placebo and 21 treated) and 23 infant peripheral blood (14 placebo and 9 treated) samples. Full data set of 84 samples were submitted to GEO)

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Dataset Information

Effect of 8-week of dietary micronutrient supplementation on gene expression in elite handball athletes.

Publications

Effect of 8-week of dietary micronutrient supplementation on gene expression in elite handball athletes.

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