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Friday, October 16, 2020 | History

3 edition of Biological determinants of the sex difference in muscular strength found in the catalog.

Biological determinants of the sex difference in muscular strength

Biological determinants of the sex difference in muscular strength

  • 341 Want to read
  • 8 Currently reading

Published .
Written in English

    Subjects:
  • Muscle strength,
  • Sex differences,
  • Body composition

  • Edition Notes

    Statementby Phillip Anderson Bishop
    The Physical Object
    FormatMicroform
    Paginationvi, 164 leaves
    Number of Pages164
    ID Numbers
    Open LibraryOL14416833M

      In addition to the chapters by Money and by Kagan, there are others which deal with determinants of sex differences and which can profitably be compared with Diamond’s treatment. In particular, Chapter 9 points up the difference between masculinization and defeminization in females, and between feminization and demasculinization in males. Sex differences in muscle quality (loss of lean mass and increase in fat mas) with advancing age may be one of the factors contributing to sex differences in GS decline. In our cohort, disease burden was a significant predictor of weaker GS initially in women, but not in men.

    Strength and muscle characteristics were examined in biceps brachii and vastus lateralis of eight men and eight women. Measurements included motor unit number, size and activation and voluntary strength of the elbow flexors and knee extensors. Fiber areas and type were determined from needle biopsies and muscle areas by computerized tomographical scanning. The women were approximately 52% and.   The difference between sex and gender is that sex is a biological concept based on biological characteristics, whereas gender deals with personal, societal and cultural perceptions of sexuality. For a very long time, the words "gender" and "sex" were used interchangeably, but that is not only no longer the case, but also nowhere close to the truth.

      Despite the large number of studies and reviews available, the evidence regarding the biological determinants of physical activity (PA) is inconclusive. In this umbrella review, we summarized the current evidence on the biological determinants of PA across the life course, by pooling the results of the available systematic literature reviews (SLRs) and meta-analyses (MAs). Anterior cruciate ligament (ACL) injuries have been a rising concern in the early years of the women’s Australian Football League (AFLW), eliciting headlines of a ‘knee crisis’ surrounding the league. There has been a focus on female biology as the primary factor driving the high rate of ACL injuries in the AFLW. Emphasising Australian football (AF) as being dangerous predominantly due.


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Biological determinants of the sex difference in muscular strength Download PDF EPUB FB2

It was concluded that for men and women similarly trained, the average sex difference in min run performance is primarily due to differences in percent fat and cardiorespiratory by: Get this from a library. Biological determinants of the sex difference in muscular strength.

[Phillip Anderson Bishop]. Sex-based differences in contractility. Testosterone is not typically associated with enhanced contractile function in that testosterone replacement is not associated with increased endurance.

For instance, hypogondal and eugonadal men exhibit similar limb muscle strength and endurance during exercise. The increase in strength associated with testosterone supplementation is thought to be due Cited by: For some of these task variables, the sex of the individual will influence the magnitude of muscle fatigue and the strength of the contributing mechanisms.

Sex-related differences within the neuromuscular system will impact physiological adjustments that occur during a fatiguing task performed by men and by:   Sex Differences in Physical Performance Tests. Physical performance measures have been routinely used in clinical assessments.

Because handgrip strength test, gait speed test, and physical performance battery test (standing balance, gait speed, and chair rises) are quick, inexpensive, and easy to administer and are shown to be valid and reliable tools for assessing muscle strength Cited by: Since these sex-specific differences occurred largely independent of the focus adopted, the aforementioned sex-specific combinations of biological, environmental, and sociocultural constraints.

As Dawkins stated in his book The Selfish Gene, males and females, by definition, differ by the size of their “sex cells or gametes,” and over evolutionary time, where there is an initial difference in gamete size, the effects of sexual selection appear to progress to maximize the specialities of the two sexes and it is then “possible to interpret all the other differences between the sexes as.

Aims and scope. Biology of Sex Differences considers manuscripts on all aspects of the effects of sex on biology and disease.

Sex has profound effects on physiology and the susceptibility to disease. The function of cells and organs depends on their sex, determined by the interplay among the genome and biological and social environments.

One study of muscle strength in the elbows and knees—in 45 and older males and females—found the strength of females to range from 42 to 63% of male strength. Another study found men to have significantly higher hand-grip strength than women, even when comparing untrained men with female athletes.

While a series of anatomical and strength differences in the hip and knee region (Quatman et al., ) appear to converge to produce a consistent sex difference in knee abduction (Carson and Ford, ), only a weak association of strength, power and body or joint structure with movement patterns has been observed for landing tasks (Mizner et.

Although the magnitude of the sex difference in muscular strength is well documented, the extent to which it reflects long-term behavioural differences in physical activity compared to innate biological differences in muscle mass or neuromuscular function is unclear.

The purposes of this study were to determine: (1) the magnitude of the sex difference in upper- and lower-body strength in groups of men and women with similar backgrounds of physical activity. The following is an excerpt from Roderick Kaine’s book Smart and SeXy. Though the focus of this work is not on differences in strength and endurance between genders, it is important to address this issue briefly because lack of acceptance of the greater physical ability of men has as much or more negative impact on the careers which require it as refusal to accept the innate cognitive.

Differences in muscle strength depend on age, gender and muscle functions Two-way analysis of variance where sex and age w ere factors and peak torque An important determinant of quality. Fully adjusted models revealed notable differences across sex, race and age categories in the pattern of the association between muscle strength and limitations.

Health and lifestyle factors such as BMI, number of comorbidities and engagement in physical activity were also important determinants of physical and IADL limitations independent of. Higher muscle strength in older adults is associated with lower prevalence of physical and functional limitation.

• Sex and ethnicity are important factors to consider for risk stratification and the development of effective grip strength training interventions for older adults at risk for ADL/IADL limitations.

When boys and girls are aligned on biological age, boys have been shown to have significantly greater bone bending strength (section modulus) at the femoral neck than girls at all biological ages.

It is not known whether a sex difference in bone strength is. The older participants in both sex groups exhibited lower levels of muscle strength than their younger counterparts for KE (males F (1, 40) =η 2 =p females F (1, 40) =η 2 =p.

It is commonly accepted that there are physiological and morphological gender differences. These differences become evident in the specific responses or magnitude of response to various training regimens. Very little difference is seen in the response to different modes of progressive resistance strength training.

Men and women experience similar relative strength gains when. This study examined the patterns and determinants of muscle strength change with aging in a healthy older male population.

sex differences in age-related grip strength decline and describe the. But, although there are a wealth of clinical reports 5 and several well-known books, both academic 6 and for the general audience, 7 with muscle testing as their topic, the fundamental question.

These large data sets were ripe for exploration of meaningful sex differences, and the Common Fund provided funding supplements to a number of researchers to consider sex as a biological variable (SABV) in their Common Fund-supported research.

Information on. Sparling, P.B. and Cureton, K.J.: Biological determinants of the sex difference in min, run performance. Medicine and Science in Sports and Exercise – (). PubMed.The mechanisms behind these sex-related differences in skeletal muscle are not known, but it appears likely that they are a consequence of different sex hormonal status.

The effects of estrogens on skeletal muscle function are unclear (6).