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Physical Activity and Breast Cancer Risk in Postmenopausal Women:the SHAPE Study
Physical Activity and Breast Cancer Risk in Postmenopausal Women: the SHAPE Study
Studie Overzicht
Gedetailleerde beschrijving
Physical activity has been associated with a decreased risk for breast cancer. The biological mechanism(s) underlying the association between physical activity and breast cancer is not clear. Most prominent hypothesis is that physical activity may protect against breast cancer through reduced lifetime exposure to endogenous hormones. Another hypothesis is that physical activity prevents overweight and abdominal adiposity.
In this intervention study, 189 sedentary postmenopausal women who are aged 50-69 years are randomly allocated to an intervention or a control group. The intervention consists of an 1-year moderate-to-vigorous intensity aerobic and strength training exercise programme. Participants allocated to the control group are requested to retain their habitual exercise pattern. Primary study parameters measured at baseline, at four months and at 12 months are: serum concentrations of endogenous estrogens, endogenous androgens, sex hormone binding globulin and insulin. Other study parameters include: amount of total and abdominal fat, weight, BMI, body fat distribution, physical fitness, blood pressure and lifestyle factors.
This study will contribute to the body of evidence relating physical activity and breast cancer risk and will provide insight into possible mechanisms through which physical activity might be associated with reduced risk of breast cancer in postmenopausal women.
Studietype
Inschrijving
Fase
- Fase 3
Contacten en locaties
Studie Locaties
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Utrecht, Nederland, 3508 GA
- University Medical Center Utrecht, Julius Center
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Women aged 50 -69 year
- > 12 months since last menses
- Non-smokers (at least 12 months)
- Sedentary
- Knowledge of the Dutch language
- Agreement to be randomly assigned to either the exercise intervention or control group
- Informed consent to participate in all screening and study activities
Exclusion Criteria:
- Use of hormone replacement or oral contraceptives in past 6 months
- Morbidly obese (BMI > 40)
- BMI < 22
- Currently on or planning to go on a strict diet
- Ever diagnosed with breast cancer
- Diagnosis of other types of cancer in the past 5 years
- Diabetes mellitus or other endocrine related diseases
- Disorders or diseases (locomotor, optical, neurological, mental) that might impede the participation in the exercise programme
- Alcohol or drug abuse
- Maintenance use of corticosteroids
- Use of beta blockers
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Preventie
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Enkel
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
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Gevoeligheid voor insuline
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Serum concentrations of endogenous estrogens: estradiol (total, free), estrone, estrone sulfate
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Serum concentrations of endogenous androgens: testosterone, androstenedione
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Serum concentrations of sex hormone binding globulin
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Serum concentrations of fasting insulin
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Secundaire uitkomstmaten
Uitkomstmaat |
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Bloeddruk
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Gewicht
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Lichaamsmassa-index (BMI)
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Medicatie gebruik
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Fysieke gezondheid
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Amount of total body fat and intra-abdominal fat
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Body fat distribution
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Waist to hip ratio
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Lifestyle parameters (covariates)
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Exercise behaviour (habitual physical activity, past week activity, physical activity in the past)
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Diet (daily caloric intake; percent daily calories from fat, carbohydrates and proteins)
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Alcohol consumption
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Reproductive factors
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Medical history
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Hoofdonderzoeker: Jantine Schuit, PhD, Dutch Institute of Public Health and the Environment
- Hoofdonderzoeker: Petra HM Peeters, PhD, University Medical Center Utrecht, Julius Center
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- UU 2003-2793
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