Monitoring Iron Levels In Male And Female Rugby Sevens Players Over An International Season

David B. Pyne, Anthea C. Clarke, Judith M. Anson, Christine E. Dziedzic, Warren A. McDonald

Research output: Contribution to journalMeeting Abstract

Abstract

Purpose: 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. Methods: Australian national male (n=27) and female (n=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin, hematocrit, 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. Results: Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151 ± 66 µg/L; mean ± SD) 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. All other hematological variables were within normal physiological range. Conclusion: Given the relatively low ferritin concentrations evident in female rugby sevens players, and the potential for further decline midway through a season when physical load is 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.
Original languageEnglish
Pages (from-to)263-263
Number of pages1
JournalMedicine and Science in Sports and Exercise
Volume48
Issue number5S
DOIs
Publication statusPublished - May 2016

Cite this

Pyne, David B. ; Clarke, Anthea C. ; Anson, Judith M. ; Dziedzic, Christine E. ; McDonald, Warren A. / Monitoring Iron Levels In Male And Female Rugby Sevens Players Over An International Season. In: Medicine and Science in Sports and Exercise. 2016 ; Vol. 48, No. 5S. pp. 263-263.
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abstract = "Purpose: 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. Methods: Australian national male (n=27) and female (n=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin, hematocrit, 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. Results: Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151 ± 66 µg/L; mean ± SD) 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. All other hematological variables were within normal physiological range. Conclusion: Given the relatively low ferritin concentrations evident in female rugby sevens players, and the potential for further decline midway through a season when physical load is 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.",
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Monitoring Iron Levels In Male And Female Rugby Sevens Players Over An International Season. / Pyne, David B.; Clarke, Anthea C.; Anson, Judith M.; Dziedzic, Christine E.; McDonald, Warren A.

In: Medicine and Science in Sports and Exercise, Vol. 48, No. 5S, 05.2016, p. 263-263.

Research output: Contribution to journalMeeting Abstract

TY - JOUR

T1 - Monitoring Iron Levels In Male And Female Rugby Sevens Players Over An International Season

AU - Pyne, David B.

AU - Clarke, Anthea C.

AU - Anson, Judith M.

AU - Dziedzic, Christine E.

AU - McDonald, Warren A.

PY - 2016/5

Y1 - 2016/5

N2 - Purpose: 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. Methods: Australian national male (n=27) and female (n=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin, hematocrit, 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. Results: Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151 ± 66 µg/L; mean ± SD) 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. All other hematological variables were within normal physiological range. Conclusion: Given the relatively low ferritin concentrations evident in female rugby sevens players, and the potential for further decline midway through a season when physical load is 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.

AB - Purpose: 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. Methods: Australian national male (n=27) and female (n=23) rugby sevens players undertook blood tests at pre-season, mid-season, and end-season. Hemoglobin, hematocrit, 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. Results: Male players typically had a three-fold higher ferritin concentration than females. Pre-season ferritin concentrations in male (151 ± 66 µg/L; mean ± SD) 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. All other hematological variables were within normal physiological range. Conclusion: Given the relatively low ferritin concentrations evident in female rugby sevens players, and the potential for further decline midway through a season when physical load is 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.

UR - http://www.mendeley.com/research/monitoring-iron-levels-male-female-rugby-sevens-players-international-season

U2 - 10.1249/01.mss.0000485792.83775.bf

DO - 10.1249/01.mss.0000485792.83775.bf

M3 - Meeting Abstract

VL - 48

SP - 263

EP - 263

JO - Medicine Science in Sports Exercise

JF - Medicine Science in Sports Exercise

SN - 0195-9131

IS - 5S

ER -