Behavioural effects of androgen in men and women

Christiansen, Kerrin

doi:10.1677/joe.0.1700039

Cited by 85 publications

(39 citation statements)

References 30 publications

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“…Likewise, the lower MMI in females is probably due to their lower serum TC [7] and IS [14,17,34]. In fact, numerous previous studies have constantly reported that TC is significantly positively associated with IS in vivo [24,38,40,46,54], and both of them can be improved with MMIs, muscle mass indexes, were expressed as mean ± SD exercise [3,5,11,20,36,37,42,48].…”

Section: Discussionmentioning

confidence: 96%

The differences of sarcopenia-related phenotypes: effects of gender and population

Zhong

Lei

Yang

et al. 2011

Eur Rev Aging Phys Act

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Sarcopenia is a serious condition especially in the elderly population mainly characterized by the loss of skeletal muscle mass and strength with aging. Extremity skeletal muscle mass index (EMMI) (sum of skeletal muscle mass in arms and legs/height 2 ) is gaining popularity in sarcopenia definition (less than two standard deviations below the mean of a young adult reference group), but little is known about the gender-and population-specific differences of EMMI. This study aimed at investigating the differences of EMMI, arm muscle mass index (AMMI), and leg muscle mass index (LMMI) between gender groups and populations (Chinese vs. Caucasians). The participants included 1,809 Chinese and 362 Caucasians with normal weight aged from 19 to 45 years old. Extremity muscle mass, arm muscle mass, and leg muscle mass were measured by using dual energy x-ray absorptiometry. Independent sample t tests were used to analyze the differences in muscle mass indexes between the studied groups. All the study parameters including EMMIs, AMMIs, and LMMIs were significantly higher (P≤0.0003) in the Caucasian group than in the Chinese group and also higher in the male group than in the female group, and these significant differences (P≤0.0005) remained after adjusting for age by simple regressions. The detected differences of muscle mass indexes between different gender and ethnic groups may provide important implications in their different risk of future sarcopenia.

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Section: Discussionmentioning

confidence: 96%

The differences of sarcopenia-related phenotypes: effects of gender and population

Zhong

Lei

Yang

et al. 2011

Eur Rev Aging Phys Act

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“…In the last few years, several investigators have attempted to identify the possible role of gonadal steroid hormones in human cognition (Christiansen, 2001;Davison & Davis, 2003;Greene & Dixon, 2002;Hausmann et al, 2000;Liben et al, 2002;McEwen, 1998;McEwen, Alves, Bulloch, & Weiland, 1997;O'Connor et al, 2001;Rubinow & Schmidt, 1996;Sherwin, 2003;Slabbekoorn, Van Goozen, Megens, Gooren, & Cohen-Kettenis, 1999;Wolf, 2003), but to our knowledge, this is the first study that applies this indicator of prenatal as well as actual saliva levels of T simultaneously in order to clarify the possible role of T on cognitive factors. Future studies investigating the association between cognitive ability and hormone concentrations should therefore include biological markers for both, prenatal as well as postnatal or actual hormone concentrations.…”

Section: Discussionmentioning

confidence: 99%

Second-to-fourth digit length, testosterone and spatial ability

et al. 2005

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“…Previous studies have concluded that testosterone levels are low in patients with both dysthymic disorder and depression (Barrett- Connor et al 1999;Christiansen 2001;Heuser 2002;Seidman et al 2002;Almeida et al 2004;Ebinger et al 2009). …”

Section: Mood and Testosterone Levelmentioning

confidence: 99%

Testosterone dynamics during encounter: role of emotional factors

et al. 2012

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This study attempts to develop a new theory to explain the varying dynamics of testosterone levels in dominant (winners) and subordinate (losers) males, both pre- and post-encounter. The crux of our new theory consists of the following four theses: (1) the strengthening of testosterone synthesis is a result of not only the existence of challenges, but also of a positive mood before an encounter that is associated with the anticipation of a victory; (2) in situations where the anticipation of victory is present but the positive mood is absent, no rise in testosterone levels will occur; (3) testosterone acts as a "pleasure" hormone and usually releases in situations where the individual achieves or anticipates possible satisfaction; (4) an increased release of testosterone to the blood not only decreases anxiety but also elevates the mood, which increases animal's/human's assertiveness and consequently aggressiveness.

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Behavioural effects of androgen in men and women

Cited by 85 publications

References 30 publications

The differences of sarcopenia-related phenotypes: effects of gender and population

The differences of sarcopenia-related phenotypes: effects of gender and population

Second-to-fourth digit length, testosterone and spatial ability

Testosterone dynamics during encounter: role of emotional factors

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