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The effect of boron supplementation and oral contraceptives on mineral status and hormone status of college female athletes and non-atheletes

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dc.contributor.authorWard, Candice Lynen
dc.contributor.departmentHuman Nutrition and Foodsen
dc.date.accessioned2014-03-14T21:27:59Zen
dc.date.adate2009-01-31en
dc.date.available2014-03-14T21:27:59Zen
dc.date.issued1994en
dc.date.rdate2009-01-31en
dc.date.sdate2009-01-31en
dc.description.abstractTwenty-nine college females, aged 18-29, participated in a six month boron supplementation protocol to evaluate mineral and hormone status of athletes and non-athletes. All subjects were classified into activity and oral contraceptive groups as follows: athletes (n=16), non-athletes (n=13), oral contraceptives (n=12), and no oral contraceptives (n=17). Subjects were randomly assigned to receive a placebo or 3 mg of boron per day. Subjects' maximal oxygen consumption (VO₂max) was assessed as a baseline measurement and was used to confirm a difference between activity groups. Body fat, height, bone mineral density, and serum calcitonin and parathyroid also were baseline measurements. Subjects were measured at baseline and six months for the following: dietary intake, body weight, serum levels of 17-f-estradiol, progesterone, and testosterone, and plasma and urine levels of calcium, phosphorus, magnesium, and boron. Athletes had a Significantly greater VO₂max (p < 0.01) than did non-athletes. Subjects taking oral contraceptives had significantly lower serum estradiol (p < 0.05) as compared to subjects not taking oral contraceptives. Boron supplemented non-athletes had a significantly greater change in plasma calcium levels (p < 0.05) as compared to boron supplemented athletes, although the athletes had a significantly higher plasma calcium level (p < 0.05) at the baseline measurement. Control subjects (n=6) had a significantly greater change in dietary carbohydrate (p < 0.01) and protein intake (p < 0.05) as compared to subjects taking boron (n=23). Boron supplementation did not appear to significantly influence any of the parameters measured. However, boron supplementation combined with activity appeared to influence plasma calcium, while serum estradiol may be influenced by oral contraceptives.en
dc.description.degreeMaster of Scienceen
dc.format.extentxi, 248 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-01312009-063054en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01312009-063054/en
dc.identifier.urihttp://hdl.handle.net/10919/40828en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.W374.pdfen
dc.relation.isformatofOCLC# 31034663en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.W374en
dc.subject.lcshBoron -- Physiological effecten
dc.subject.lcshCollege athletes -- Physiologyen
dc.subject.lcshOral contraceptives -- Physiological effecten
dc.subject.lcshOsteoporosis -- Preventionen
dc.subject.lcshWomen college students -- Physiologyen
dc.titleThe effect of boron supplementation and oral contraceptives on mineral status and hormone status of college female athletes and non-atheletesen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineHuman Nutrition and Foodsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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