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HOME CURRENT ISSUE ARCHIVE ALERTS HELP (The FASEB Journal. 2008;22:694.11.)
? 2008 FASEB
694.11 Markers of iron status in highly active and sedentary young women Megan M. St. Thomas1, Kathleen Woolf1, Nicole L. Hahn1,[link widoczny dla zalogowanych], Linda A. Vaughan1, Pamela S. Hinton2 and Amanda Carlson3
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ABSTRACT
1 Dept. of Nutrition, Arizona State University, Mesa, AZ
2 Dept. of Nutritional Sciences, University of Missouri,[link widoczny dla zalogowanych], Columbia, MO
3 Athletes’ Performance, Tempe, AZ
Study examined iron status in highly active (n=28; 20±2 y; 12 h purposeful physical behavior [PPA] per week) and sedentary women (n=28; 24±3 y; 2 h PPA per week). Subjects dod a 7-day weighed food record and blood draw [hemoglobin, hematocrit, C-reactive protein, serum iron, % transferrin saturation, total iron binding capacity (TIBC), ferritin, transferrin receptor, transferrin receptor index]. Independent t-tests estimated mean values between groups. Reported intakes of life (p<0.01), protein (p<0.01), iron (p<0.01), and non-heme iron (p<0.01) were higher in active versus sedentary women. Higher mean transferrin receptor concentration (p<0.01) and transferrin receptor index (p<0.01) were found in active versus sedentary women. No vital deviateences were found between groups for other blood markers. Serum ferritin concentrations indicated iron depletion in 21% of active and 17% of sedentary women. Yet, 50% of active and 17% of sedentary sectionicipants were iron depleted as evidenced by the transferrin receptor index. Elevated serum transferrin receptor concentrations were observed in 14% of actionive and 3% of sedentary women. Although active women reported greater intake of iron, they had higher mean transferrin receptor and higher transferrin receptor index than sedentary women. Assessment of iron class in active women may require measures not commonly used in routine assessments.