Effect of Exercise on Sex Hormones in Postmenopausal Women

This study has been completed.
Information provided by:
Fred Hutchinson Cancer Research Center
ClinicalTrials.gov Identifier:
First received: April 25, 2008
Last updated: November 26, 2012
Last verified: November 2012

The goals of the study are to examine the effect in postmenopausal women of a one-year moderate intensity exercise intervention, as compared with a sedentary pattern (low-level stretching program), on: serum estrogens, androgens, sex hormone binding globulin, insulin, triglycerides, glucose, aromatase, FSH, LH, as well as parameters of body fat mass.

Condition Intervention Phase
Breast Cancer Prevention
Behavioral: Exercise
Phase 2
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Prevention
Official Title: Physical Activity and Total Health Trial

Resource links provided by NLM:

Further study details as provided by Fred Hutchinson Cancer Research Center:

Primary Outcome Measures:
  • Serum total estrone concentration [ Time Frame: Baseline, 3 month, 12-month ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • serum total estradiol, free estradiol, estrone sulfate, testosterone, androstenedione, and sex hormone binding globulin (SHBG). [ Time Frame: baseline, 3 month, 12-month ] [ Designated as safety issue: No ]
  • Urinary estrogen metabolite ratio (2-OHE1:16alpha-OHE1). [ Time Frame: Basline, 3 month, 12-month ] [ Designated as safety issue: No ]
  • Adipose tissue stores: weight, body mass index, total fat mass, waist and hip circumferences and their ratio, and subcutaneous and intra-abdominal fat areas [ Time Frame: Baseline, 3 month, 12 month ] [ Designated as safety issue: No ]
  • Fasting serum concentrations of insulin, glucose, and triglycerides [ Time Frame: Baseline, 3 month, 12 month ] [ Designated as safety issue: No ]
  • Quality of life [ Time Frame: Baseline, 3 month, 12 month ] [ Designated as safety issue: No ]

Enrollment: 173
Study Start Date: January 1997
Study Completion Date: December 2004
Primary Completion Date: December 2003 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Behavioral: Exercise
Moderate intensity exercise, 5 days per week, 45 min per session, 50-70% max HR, divided into a 3-month individualized and 9-month maintenance period.
No Intervention: 2


Ages Eligible for Study:   50 Years to 75 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Ages 55-75 years at first group meeting
  • Physically able to undertake a moderate exercise program
  • Sedentary activity pattern (exercising < 2 times/week for 20 minutes at a level to produce sweating)
  • Postmenopausal (not experiencing menstrual periods for the previous 12 months or FSH >30 mIU/ml; for women who have had a hysterectomy, an FHS >30 mIU/ml will classify them as postmenopausal)
  • Body Mass Index (BMI) greater than 25.0
  • Able to follow directions and fill out questionnaires, and exercise diaries and logs in English
  • Agrees to be randomly assigned to either the exercise intervention or control group
  • Gives informed consent to participate in all screening and study activities
  • Able to come to the FHCRC for clinic visits and classes, to the UW Medical Center for CT scans, and to the UW NETT for measurements and instruction

Exclusion Criteria:

  • Plans to leave Western Washington within the follow-up period
  • Using hormone replacement, tamoxifen, or oral contraceptives in past 6 months
  • Currently having severe hot flashes (that might prompt participant to start hormone replacement therapy before the end of study)
  • Current unstable thyroid disease or unstable dose of thyroid medications or TSH >5.0 IU/ml or <0.5 IU/ml
  • Invasive cancer in the past 10 years (except nonmelanotic skin cancer)
  • Any other endocrinologic abnormality
  • Breast, endometrial, ovarian, or melanoma cancer or carcinoma-in-situ at any time
  • Morbidly obese (BMI > 40)
  • Current or planned use of corticosteroids
  • Currently on or planning to enter a structured weight loss program or to take diet drugs
  • Current use of certain other medications, such as any likely to interfere with adherence to an exercise program or likely to interfere with study outcomes
  • Moderate to high alcohol intake (more than 2 drinks per day)
  • Current smoker
  • Diabetes mellitus (fasting hyperglycemia)
  • Abnormal screening labs (hematocrit < 32 or > 48, white blood cells < 3.0 or > 15.0, potassium < 3.5 or > 5.0, fasting glucose > 140, creatinine > 2.0), or abnormalities on screening physical judged by study physicians to contraindicate participation in an exercise program
  • Contraindications for entry into a training program118 including: unstable angina, uncontrolled hypertension (systolic > 200, diastolic > 100), orthostatic hypotension (> 20), moderate/severe aortic stenosis, uncontrolled arrhythmia, uncontrolled congestive heart failure, third degree heart block, pericarditis, myocarditis, pulmonary/systemic embolism within the past 6 months, thrombophlebitis, ST displacement > 3 mm at rest, history of cardiac arrest)
  • Contraindications for exercise testing118 including: recent (within 6 months) cardiac event (MI, pulmonary edema, myocarditis, pericarditis), unstable angina, uncontrolled arrhythmia, third degree heart block, left bundle branch block, acute congestive failure, recent (within 6 months) pulmonary/systemic embolus, severe electrolyte abnormality
  • Meets criteria to stop screening exercise test118 as decided by overseeing physician (Dr. Schwartz or McTiernan)
  • volunteering in order to lose weight
  • alcohol or drug abuse, significant mental illness (as assessed by study staff impression)
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00668174

United States, Washington
Fred Hutchinson Cancer Research Center
Seattle, Washington, United States, 98102
Sponsors and Collaborators
Fred Hutchinson Cancer Research Center
  More Information


Responsible Party: Anne McTiernan, MD, PhD, Fred Hutchinson Cancer Research Center
ClinicalTrials.gov Identifier: NCT00668174     History of Changes
Other Study ID Numbers: PATH - CA/AG69334-01A2,, IR-4290
Study First Received: April 25, 2008
Last Updated: November 26, 2012
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases

ClinicalTrials.gov processed this record on April 21, 2014