How Does Iron Supplementation Affect Training and Performance in Female Collegiate Rowers?

Study Description

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Brief Summary:

The specific aims of the current study were: 1) To determine the prevalence of IDNA in a sample of female rowers at the beginning of a training season; 2) To determine how IDNA affects endurance training and performance at the beginning of a training season; 3) To determine how iron supplementation affects iron status, training and performance in IDNA female collegiate rowers. The researchers hypothesized that IDNA affects endurance performance in female collegiate rowers both in and outside of the laboratory, and that iron supplementation of IDNA rowers will improve iron status, and consequently, training quality via increased energetic efficiency.

Condition or disease	Intervention/treatment	Phase
Iron Deficiency (Without Anemia)	Dietary Supplement: Placebo; Dietary Supplement: Ferrous sulfate	Not Applicable

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Study Design

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Study Type :	Interventional (Clinical Trial)
Actual Enrollment :	40 participants
Allocation:	Randomized
Intervention Model:	Parallel Assignment
Masking:	Double (Participant, Outcomes Assessor)
Primary Purpose:	Basic Science
Official Title:	How Does Iron Deficiency Without Anemia (IDNA) Affect Endurance Training In Female Collegiate Endurance Athletes?
Study Start Date :	August 2008
Actual Primary Completion Date :	December 2009
Actual Study Completion Date :	December 2009

Arms and Interventions

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Arm	Intervention/treatment
Placebo Comparator: Placebo; Red capsule (50 mg) lactose	Dietary Supplement: Placebo; 100 mg lactose per day for 6 weeks
Experimental: Ferrous sulfate	Dietary Supplement: Ferrous sulfate; 100 mg per day of ferrous sulfate for 6 weeks

Outcome Measures

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Primary Outcome Measures :

1. Markers of iron status [ Time Frame: 6 weeks ]

Secondary Outcome Measures :

1. Physical performance outcomes [ Time Frame: 6 weeks ]

Eligibility Criteria

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Ages Eligible for Study:	18 Years to 30 Years (Adult)
Sexes Eligible for Study:	Female
Accepts Healthy Volunteers:	Yes

Criteria

Inclusion Criteria:

• non-smoking
• current member of college/university rowing team

Exclusion Criteria:

• acute or chronic injury or illness at time of screening
• physician-diagnosed asthma, musculoskeletal problems, or eating disorders
• pregnant or lactating
• use of steroids or other performance-enhancing substances

Contacts and Locations

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Locations

United States, New York
Human Metabolic Research Unit, MVR Hall, Cornell University
Ithaca, New York, United States, 14853

Sponsors and Collaborators

Cornell University

Investigators

Principal Investigator:	Jere D. Haas, PhD	Cornell University
Study Director:	Diane M. DellaValle, PhD	Cornell University

More Information

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Publications of Results:

DellaValle DM, Haas JD. Impact of iron depletion without anemia on performance in trained endurance athletes at the beginning of a training season: a study of female collegiate rowers. Int J Sport Nutr Exerc Metab. 2011 Dec;21(6):501-6.

Dellavalle DM, Haas JD. Iron status is associated with endurance performance and training in female rowers. Med Sci Sports Exerc. 2012 Aug;44(8):1552-9. doi: 10.1249/MSS.0b013e3182517ceb.

DellaValle DM, Haas JD. Iron supplementation improves energetic efficiency in iron-depleted female rowers. Med Sci Sports Exerc. 2014 Jun;46(6):1204-15. doi: 10.1249/MSS.0000000000000208.

Responsible Party:	Cornell University
ClinicalTrials.gov Identifier:	NCT01383798 History of Changes
Other Study ID Numbers:	OSP 57149
First Posted:	June 28, 2011
Last Update Posted:	March 14, 2014
Last Verified:	March 2014

Keywords provided by Cornell University:

iron deficiency, physical performance, female athletes

Additional relevant MeSH terms:

Anemia; Anemia, Iron-Deficiency; Hematologic Diseases	Anemia, Hypochromic; Iron Metabolism Disorders; Metabolic Diseases