Iron monitoring of male and female rugby sevens players over an international season
Given the likely influence that high training loads, contact-induced hemolysis and female-specific requirements have on the incidence of iron deficiency, characterizing the direction and magnitude of fluctuations in iron status over an international season is important for managing player health and...
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| Veröffentlicht in: | Journal of sports medicine and physical fitness 2018-10, Vol.58 (10), p.1490 |
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| container_issue | 10 |
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| container_title | Journal of sports medicine and physical fitness |
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| creator | Clarke, Anthea C Anson, Judith M Dziedzic, Christine E Mcdonald, Warren A Pyne, David B |
| description | Given the likely influence that high training loads, contact-induced hemolysis and female-specific requirements have on the incidence of iron deficiency, characterizing the direction and magnitude of fluctuations in iron status over an international season is important for managing player health and physical performance in rugby sevens.
Australian national male (N.=27) and female (N.=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin (Hb), hematocrit (Hct), ferritin, transferrin and transferrin saturation were quantified. Female athletes also reported oral contraceptive use and a subset (N.=7) provided 7-day food diaries to quantify iron intake.
Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151±66 µg/L) and female (51±24 µg/L) players declined substantially (~20%) by mid-season but recovered by end-season. Over the season 23% of female players were classified as iron deficient (ferritin |
| doi_str_mv | 10.23736/S0022-4707.17.07363-7 |
| format | Article |
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Australian national male (N.=27) and female (N.=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin (Hb), hematocrit (Hct), ferritin, transferrin and transferrin saturation were quantified. Female athletes also reported oral contraceptive use and a subset (N.=7) provided 7-day food diaries to quantify iron intake.
Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151±66 µg/L) and female (51±24 µg/L) players declined substantially (~20%) by mid-season but recovered by end-season. Over the season 23% of female players were classified as iron deficient (ferritin <30 µg/L) and prescribed supplementation. The greatest incidence of iron deficiency in female players occurred mid-season (30%). Oral contraception and dietary iron intake had an unclear influence on female players' ferritin concentration, while age was largely positively correlated (r=0.66±~0.33).
Given the relatively low ferritin concentrations evident in female rugby sevens players, and the potential for a further decline midway through a season when physical load may be at its highest, 6-monthly hematological reviews are suggested in combination with dietary management. Annual screening may be beneficial for male players, with further monitoring only when clinically indicated.</description><identifier>ISSN: 0022-4707</identifier><identifier>EISSN: 1827-1928</identifier><identifier>DOI: 10.23736/S0022-4707.17.07363-7</identifier><identifier>PMID: 28597617</identifier><language>eng</language><publisher>Italy: Edizioni Minerva Medica</publisher><subject>Adult ; Athletes ; Australia ; Contraception ; Dietary intake ; Dietary supplements ; Exercise ; Female ; Females ; Ferritin ; Ferritins - analysis ; Football ; Hematocrit ; Hemoglobin ; Hemoglobins - analysis ; Humans ; Iron ; Iron - blood ; Iron - deficiency ; Longitudinal Studies ; Male ; Males ; Nutrient deficiency ; Physical Fitness ; Rugby ; Sexes ; Sports medicine ; Sports Nutritional Physiological Phenomena ; Sports training ; Time Factors ; Transferrin - analysis ; Transferrins ; Young Adult</subject><ispartof>Journal of sports medicine and physical fitness, 2018-10, Vol.58 (10), p.1490</ispartof><rights>Copyright Edizioni Minerva Medica Oct 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c339t-f5db615370f38bbce23ee7563b606bd49038f3abf3c413de1222d61446abfc4f3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28597617$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Clarke, Anthea C</creatorcontrib><creatorcontrib>Anson, Judith M</creatorcontrib><creatorcontrib>Dziedzic, Christine E</creatorcontrib><creatorcontrib>Mcdonald, Warren A</creatorcontrib><creatorcontrib>Pyne, David B</creatorcontrib><title>Iron monitoring of male and female rugby sevens players over an international season</title><title>Journal of sports medicine and physical fitness</title><addtitle>J Sports Med Phys Fitness</addtitle><description>Given the likely influence that high training loads, contact-induced hemolysis and female-specific requirements have on the incidence of iron deficiency, characterizing the direction and magnitude of fluctuations in iron status over an international season is important for managing player health and physical performance in rugby sevens.
Australian national male (N.=27) and female (N.=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin (Hb), hematocrit (Hct), ferritin, transferrin and transferrin saturation were quantified. Female athletes also reported oral contraceptive use and a subset (N.=7) provided 7-day food diaries to quantify iron intake.
Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151±66 µg/L) and female (51±24 µg/L) players declined substantially (~20%) by mid-season but recovered by end-season. Over the season 23% of female players were classified as iron deficient (ferritin <30 µg/L) and prescribed supplementation. The greatest incidence of iron deficiency in female players occurred mid-season (30%). Oral contraception and dietary iron intake had an unclear influence on female players' ferritin concentration, while age was largely positively correlated (r=0.66±~0.33).
Given the relatively low ferritin concentrations evident in female rugby sevens players, and the potential for a further decline midway through a season when physical load may be at its highest, 6-monthly hematological reviews are suggested in combination with dietary management. Annual screening may be beneficial for male players, with further monitoring only when clinically indicated.</description><subject>Adult</subject><subject>Athletes</subject><subject>Australia</subject><subject>Contraception</subject><subject>Dietary intake</subject><subject>Dietary supplements</subject><subject>Exercise</subject><subject>Female</subject><subject>Females</subject><subject>Ferritin</subject><subject>Ferritins - analysis</subject><subject>Football</subject><subject>Hematocrit</subject><subject>Hemoglobin</subject><subject>Hemoglobins - analysis</subject><subject>Humans</subject><subject>Iron</subject><subject>Iron - blood</subject><subject>Iron - deficiency</subject><subject>Longitudinal Studies</subject><subject>Male</subject><subject>Males</subject><subject>Nutrient deficiency</subject><subject>Physical Fitness</subject><subject>Rugby</subject><subject>Sexes</subject><subject>Sports medicine</subject><subject>Sports Nutritional Physiological Phenomena</subject><subject>Sports training</subject><subject>Time Factors</subject><subject>Transferrin - analysis</subject><subject>Transferrins</subject><subject>Young Adult</subject><issn>0022-4707</issn><issn>1827-1928</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kMtqwzAQRUVpaUKaXwiCrp3qYUvWsoS-INBF07WQ7FFwsaVUcgL5-zpOmtUMw7mX4SC0oGTJuOTi6YsQxrJcErmkckmGE8_kDZrSksmMKlbeoukVmaB5So0lpFAFIbK4RxNWFkoKKqdo8xGDx13wTR9i47c4ONyZFrDxNXYwrnG_tUec4AA-4V1rjhATDgeIA4Qb30P0pm-CN-0AmRT8A7pzpk0wv8wZ-n592azes_Xn28fqeZ1VnKs-c0VtBS24JI6X1lbAOIAsBLeCCFvnivDScWMdr3LKa6CMsVrQPBfDrcodn6HHc-8uht89pF7_hP3wTJs0o0wplTMhB0qcqSqGlCI4vYtNZ-JRU6JHn3r0qU-yNJV69KlPwcWlfm87qK-xf3v8DxEocTA</recordid><startdate>201810</startdate><enddate>201810</enddate><creator>Clarke, Anthea C</creator><creator>Anson, Judith M</creator><creator>Dziedzic, Christine E</creator><creator>Mcdonald, Warren A</creator><creator>Pyne, David B</creator><general>Edizioni Minerva Medica</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QP</scope><scope>7TS</scope><scope>K9.</scope><scope>NAPCQ</scope></search><sort><creationdate>201810</creationdate><title>Iron monitoring of male and female rugby sevens players over an international season</title><author>Clarke, Anthea C ; Anson, Judith M ; Dziedzic, Christine E ; Mcdonald, Warren A ; Pyne, David B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c339t-f5db615370f38bbce23ee7563b606bd49038f3abf3c413de1222d61446abfc4f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Adult</topic><topic>Athletes</topic><topic>Australia</topic><topic>Contraception</topic><topic>Dietary intake</topic><topic>Dietary supplements</topic><topic>Exercise</topic><topic>Female</topic><topic>Females</topic><topic>Ferritin</topic><topic>Ferritins - analysis</topic><topic>Football</topic><topic>Hematocrit</topic><topic>Hemoglobin</topic><topic>Hemoglobins - analysis</topic><topic>Humans</topic><topic>Iron</topic><topic>Iron - blood</topic><topic>Iron - deficiency</topic><topic>Longitudinal Studies</topic><topic>Male</topic><topic>Males</topic><topic>Nutrient deficiency</topic><topic>Physical Fitness</topic><topic>Rugby</topic><topic>Sexes</topic><topic>Sports medicine</topic><topic>Sports Nutritional Physiological Phenomena</topic><topic>Sports training</topic><topic>Time Factors</topic><topic>Transferrin - analysis</topic><topic>Transferrins</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Clarke, Anthea C</creatorcontrib><creatorcontrib>Anson, Judith M</creatorcontrib><creatorcontrib>Dziedzic, Christine E</creatorcontrib><creatorcontrib>Mcdonald, Warren A</creatorcontrib><creatorcontrib>Pyne, David B</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Physical Education Index</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><jtitle>Journal of sports medicine and physical fitness</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Clarke, Anthea C</au><au>Anson, Judith M</au><au>Dziedzic, Christine E</au><au>Mcdonald, Warren A</au><au>Pyne, David B</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Iron monitoring of male and female rugby sevens players over an international season</atitle><jtitle>Journal of sports medicine and physical fitness</jtitle><addtitle>J Sports Med Phys Fitness</addtitle><date>2018-10</date><risdate>2018</risdate><volume>58</volume><issue>10</issue><spage>1490</spage><pages>1490-</pages><issn>0022-4707</issn><eissn>1827-1928</eissn><abstract>Given the likely influence that high training loads, contact-induced hemolysis and female-specific requirements have on the incidence of iron deficiency, characterizing the direction and magnitude of fluctuations in iron status over an international season is important for managing player health and physical performance in rugby sevens.
Australian national male (N.=27) and female (N.=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin (Hb), hematocrit (Hct), ferritin, transferrin and transferrin saturation were quantified. Female athletes also reported oral contraceptive use and a subset (N.=7) provided 7-day food diaries to quantify iron intake.
Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151±66 µg/L) and female (51±24 µg/L) players declined substantially (~20%) by mid-season but recovered by end-season. Over the season 23% of female players were classified as iron deficient (ferritin <30 µg/L) and prescribed supplementation. The greatest incidence of iron deficiency in female players occurred mid-season (30%). Oral contraception and dietary iron intake had an unclear influence on female players' ferritin concentration, while age was largely positively correlated (r=0.66±~0.33).
Given the relatively low ferritin concentrations evident in female rugby sevens players, and the potential for a further decline midway through a season when physical load may be at its highest, 6-monthly hematological reviews are suggested in combination with dietary management. Annual screening may be beneficial for male players, with further monitoring only when clinically indicated.</abstract><cop>Italy</cop><pub>Edizioni Minerva Medica</pub><pmid>28597617</pmid><doi>10.23736/S0022-4707.17.07363-7</doi></addata></record> |
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| source | MEDLINE; Alma/SFX Local Collection |
| subjects | Adult Athletes Australia Contraception Dietary intake Dietary supplements Exercise Female Females Ferritin Ferritins - analysis Football Hematocrit Hemoglobin Hemoglobins - analysis Humans Iron Iron - blood Iron - deficiency Longitudinal Studies Male Males Nutrient deficiency Physical Fitness Rugby Sexes Sports medicine Sports Nutritional Physiological Phenomena Sports training Time Factors Transferrin - analysis Transferrins Young Adult |
| title | Iron monitoring of male and female rugby sevens players over an international season |
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