![]() ![]() (3) Lower Hb is important contributor to lower VO2Max in womenĬ) When comparing muscle difference across cross sectional area: (2) Lower arterial O2 content, reduced muscle oxidative potential (1) Due to lower Hb content (10% less than men) Iii) Women have less potential for increasing A-VO2 difference Ii) Fick Equation for reference □=□□2□□2 ![]() I) Similar, but met through higher HR and lower SV I) Approximately 25% lower in women compared to men Ii) In males this ratio of FFM to height can continue until age of 20Ģ) Body composition of the sexes begins to difference markedly during pubertyĪ) Primarily due to endocrine responses (increases in sex hormones respectively)ī) Prior to puberty the anterior pituitary gland does not secrete gonadotropic hormonesĤ) Distribution of muscle mass is different between the sexesĪ) Males have a higher percentage of muscle mass in the upper body compared to femalesĪ) Broadening the pelvis, stimulating breast development, increasing fat depositionĦ) With age, men and women both tend to accumulate fat and lose muscle and bone densityĪ) These changes are associated with decreased physical activity, free testosterone, and estrogenī) By age 65, muscle mass in humans drop around 25-30% this is mainly attributed to decreases around 20-30% in muscle fiber diameter and around 25% in total muscle fiber numberĬ) Motor unit remodeling, loss of myelination over time-less synapse activity results in decreases of 33% in twitch force and maximal voluntary contraction. I) At 12-13 years, the ratio of FFM to height begins to plateau in females Physiological Sex Differences Quick Guideġ) Body Composition/Structural DifferencesĪ) Major differences in and composition are not seen until puberty ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |