ExcelMale
Menu
Home
What's new
Latest activity
Forums
New posts
Search forums
What's new
New posts
Latest activity
Videos
Lab Tests
Doctor Finder
Buy Books
About Us
Men’s Health Coaching
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
Testosterone Replacement, Low T, HCG, & Beyond
Testosterone and Men's Health Articles
The association between serum testosterone and insulin resistance: a longitudinal study
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="madman" data-source="post: 132912" data-attributes="member: 13851"><p><strong>Abstract</strong></p><p>The objective of this study was to investigate whether there is a bidirectional association between testosterone concentrations and insulin resistance, in a prospective population study. A random population sample of 1400 men, aged 30–74, was examined in 2002–2005 in southwestern Sweden and followed up in 2012–2014 (N = 657). After excluding subjects without information on sex hormones and insulin resistance, 1282 men were included in the baseline study. Fasting measurements of plasma glucose, insulin and hormones were performed. Insulin resistance was defined using HOMA-Ir. Mean age at baseline was 47.3 ± 11.4 years. From the follow-up survey 546 men were included, mean age 57.7 ± 11.6 years. Low concentrations of total testosterone at baseline were significantly associated with high logHOMA-Ir at follow-up in a multivariable model including age, waist–hip ratio, physical activity, alcohol intake, smoking, LDL, CRP, hypertension, diabetes and logHOMA-Ir at baseline as covariates (β = −0.096, P = 0.006). Similar results were observed for bioavailable testosterone. Men within the lowest quartile of total testosterone at baseline had significantly higher logHOMA-Ir at follow-up than other quartiles (Q1 vs Q2 P = 0.008, Q1 vs Q3 P = 0.001, Q1 vs Q4 P = 0.052). Multivariable analysis of the impact of insulin resistance at baseline on testosterone levels at follow-up revealed no significant associations regarding testosterone concentrations (β = −0.003, P = 0.928) or bioavailable testosterone (β = −0.006, P = 0.873), when adjusting for baseline concentrations of total testosterone, age, waist–hip-ratio, LDL, CRP, physical activity, alcohol intake, smoking, hypertension and diabetes. <strong><span style="color: rgb(184, 49, 47)">Low testosterone concentrations at baseline predicted higher insulin resistance at follow-up, but high insulin resistance at baseline could not predict low testosterone at follow-up.</span></strong></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p><strong>Conclusion</strong></p><p></p><p>We observed a robust association between low testosterone concentrations and insulin resistance, both cross sectionally and longitudinally, but this relationship was not bidirectional. <strong><span style="color: rgb(184, 49, 47)">While low concentrations of testosterone independently predicted the increase in insulin resistance, no significant impact of insulin resistance on testosterone concentrations was observed during the follow-up time.</span></strong> Further studies including sex hormone-binding globulin and estradiol may provide more insight into the role of sex hormones on the deterioration of insulin resistance</p></blockquote><p></p>
[QUOTE="madman, post: 132912, member: 13851"] [B]Abstract[/B] The objective of this study was to investigate whether there is a bidirectional association between testosterone concentrations and insulin resistance, in a prospective population study. A random population sample of 1400 men, aged 30–74, was examined in 2002–2005 in southwestern Sweden and followed up in 2012–2014 (N = 657). After excluding subjects without information on sex hormones and insulin resistance, 1282 men were included in the baseline study. Fasting measurements of plasma glucose, insulin and hormones were performed. Insulin resistance was defined using HOMA-Ir. Mean age at baseline was 47.3 ± 11.4 years. From the follow-up survey 546 men were included, mean age 57.7 ± 11.6 years. Low concentrations of total testosterone at baseline were significantly associated with high logHOMA-Ir at follow-up in a multivariable model including age, waist–hip ratio, physical activity, alcohol intake, smoking, LDL, CRP, hypertension, diabetes and logHOMA-Ir at baseline as covariates (β = −0.096, P = 0.006). Similar results were observed for bioavailable testosterone. Men within the lowest quartile of total testosterone at baseline had significantly higher logHOMA-Ir at follow-up than other quartiles (Q1 vs Q2 P = 0.008, Q1 vs Q3 P = 0.001, Q1 vs Q4 P = 0.052). Multivariable analysis of the impact of insulin resistance at baseline on testosterone levels at follow-up revealed no significant associations regarding testosterone concentrations (β = −0.003, P = 0.928) or bioavailable testosterone (β = −0.006, P = 0.873), when adjusting for baseline concentrations of total testosterone, age, waist–hip-ratio, LDL, CRP, physical activity, alcohol intake, smoking, hypertension and diabetes. [B][COLOR=rgb(184, 49, 47)]Low testosterone concentrations at baseline predicted higher insulin resistance at follow-up, but high insulin resistance at baseline could not predict low testosterone at follow-up.[/COLOR][/B] [B]Conclusion[/B] We observed a robust association between low testosterone concentrations and insulin resistance, both cross sectionally and longitudinally, but this relationship was not bidirectional. [B][COLOR=rgb(184, 49, 47)]While low concentrations of testosterone independently predicted the increase in insulin resistance, no significant impact of insulin resistance on testosterone concentrations was observed during the follow-up time.[/COLOR][/B] Further studies including sex hormone-binding globulin and estradiol may provide more insight into the role of sex hormones on the deterioration of insulin resistance [/QUOTE]
Insert quotes…
Verification
Post reply
Share this page
Facebook
Twitter
Reddit
Pinterest
Tumblr
WhatsApp
Email
Share
Link
Sponsors
Forums
Testosterone Replacement, Low T, HCG, & Beyond
Testosterone and Men's Health Articles
The association between serum testosterone and insulin resistance: a longitudinal study
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top