health

Obstructive sleep apnea and grip strength

Obstructive sleep apnea and grip strength

Associations of OSA and Nocturnal Hypoxemia with Strength and Body Composition in Community Dwelling Middle Aged and Older Men
Stevens D, Appleton S, Vincent AD, Melaku Y, Martin S, Gill T, Hill C, Vakulin A, Adams R, Wittert G. Nat Sci Sleep. 2020;12:959-968. https://doi.org/10.2147/NSS.S276932
Contact: David Stevens

Link between grip strength and diabetes risk

Link between grip strength and diabetes risk

Association of metabolic phenotypes, grip strength and diabetes risk: The 15-year follow-up of The North West Adelaide Health Study, Australia
Beleigoli AM, Appleton SL, Gill TK, Hill CL, Adams RJ. Obes Res Clin Pract. 2020 Oct 8:S1871-403X(20)30583-4. doi: 10.1016/j.orcp.2020.09.006.
Contact: Alline Beleigoli

Time to rethink the link between testosterone and masculinity

New research by the Freemasons Centre for Male Health and Wellbeing has shown the public perception that ‘too much testosterone’ increases stereotypical masculine traits in men might not be true at all.

The Australian-first study analysed testosterone levels of more than 500 men aged 35 and older and assessed their self-perceptions of masculinity through a questionnaire that rated six different indicators of masculinity.

Research leader and endocrinologist, Professor Gary Wittert, said the results showed no relationship between testosterone and masculinity.

“Masculinity traditionally tends to be characterised by traits such as toughness, emotional control, physical strength, competitiveness and sexual competency,” Professor Wittert said.

“The six areas of self-perceived masculinity evaluated in this study were physical strength, optimism, sexuality, self-reliability, family responsibility and ability to take action. We found there was no link between the participants’ self-perceptions of these traits and their testosterone concentration.”

Professor Wittert said the study clearly showed that psychosocial factors and physical disorders are the variants underpinning self-perceived masculinity.

“The key factors negatively impacting scores included a history of anxiety, being without a partner and most significantly living with moderate to severe erectile dysfunction,” he said.

Men with bigger waistlines and varying levels of erectile dysfunction were less confident sexually and less optimistic, while males with partners viewed themselves as physically stronger and more responsible than those who had been widowed or divorced.

“The notion that typical traits of masculinity are linked to testosterone and are risk factors for poor health no longer stand up to scrutiny,” Prof Wittert said.

“Accumulating evidence suggests that aspects of typical masculinity might be associated with better health and health outcomes for men,” Prof Wittert said.

Enquiries to: Professor Gary Wittert

Key reference: Peel, A., Martin, S., Vincent, A., Turnbull, D., Wang, X., McGee, M., Jesudason, D., Chambers, S., & Wittert, G. (2020). Relationship between Testosterone and Self-Perceived Masculinity in an Australian Cohort of Community-Dwelling Men. Journal of Men’s Health, 16(4), e28-e44. https://doi.org/10.31083/jomh.v16i4.252

Pre-conception health, sperm health and child health outcomes

Pre-conception health, sperm health and child health outcomes

The responsibilities of fatherhood start well before conception. Our research examines the biology of how disease risk is transferred via sperm and use this knowledge to develop tests of risk and interventions targeting men at the family planning stage.

The Robinson Research Institute, The University of Adelaide, and South Australian Health and Medical Research Institute (SAHMRI)
Contact:
Dr Nicole McPherson