The Testosterone Trials are a multi-center set of trials involving 12 clinical sites geographically distributed across the United States. The primary specific aims are to test the hypotheses that testosterone treatment of elderly men whose serum testosterone concentrations are unequivocally low - and who have symptoms and objectively measured abnormalities in at least one of five areas that could be due to low testosterone (physical or sexual function, vitality, cognition, and anemia) - will result in more favorable changes in those abnormalities than placebo treatment. Two additional trials have been incorporated into the T Trial. Only men enrolled in the T Trial are eligible to participate in these trials. * The Cardiovascular Trial will examine if testosterone treatment results in more favorable changes in cardiovascular risk factors, compared to placebo. * The Bone Trial will test the hypothesis that testosterone treatment will increase volumetric trabecular bone mineral density (vBMD) of the lumbar spine as measured by quantitative computed tomography (QCT), compared with placebo treatment. A Pharmacokinetic (PK) Study is also being conducted within the context of the interventional T Trial. It will examine the variability of the serum testosterone (T) concentration after application of testosterone gel or placebo, four months after the start of treatment.
Age range
65 Years
Sex
MALE
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The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Sexual Function Trial - Change in Psychosexual Daily Questionnaire Question 4 (PDQ-Q4) From Baseline to Month 12
Timeframe: 1 year (change from baseline to month 3, 6, 9 and 12)
Physical Function Trial - The 6-Minute Walk Test - no./Total no. (%)
Timeframe: 1 year (Number of participants who increased walk distance > or = 50 meters, change from baseline to month 3, 6, 9 and 12)
Vitality Trial - Increase in Functional Assessment of Chronic Illness Therapy (FACIT) - Fatigue Score Greater Than or Equal to 4 - no./Total no. (%)
Timeframe: 1 year (Number of participants who increased FACIT-Fatigue score > or = to 4, change from baseline to month 3, 6, 9 and 12)
Cardiovascular Trial - Assess Impact of Testosterone Treatment in Older Men on Noncalcified Plaque Volume
Timeframe: 1 year (change in plaque volume measurement from baseline to month 12)
Bone Trial - Volumetric Bone Mineral Density (BMD) of Spine Trabecular Bone by Quantitative Computed Tomography (QCT) in Older Men With Low Testosterone
Timeframe: 1 year (QCT measurement of BMD change between baseline and month 12)
Cognitive Function Trial - Delayed Paragraph Recall Wechsler Memory Scale Revised Logical Memory II (WMS-R LMII)
Timeframe: 1 year (change from baseline to month 6 and month 12)
Anemia Trial - Effect of Testosterone on Hemoglobin Levels - Unexplained Anemia
Timeframe: 1 year (change in hemoglobin g/dL from baseline to month 3, 6, 9 and 12)