每天的能量消耗在男性中变化较大,在青春期发展到青春期
Lewis G Halsey1, Vincent Careau2, Philip N Ainslie3
1School of Life and Health Sciences, University of Roehampton, London SW15 4JD, UK.
Biology letters
|September 20, 2023
概括
在年轻成年期,男性的每日能量消耗 (EE) 变化较大,这与肌肉质量等特征有关. 这种更大的男性变异 (GMV) 随着年龄的增长而减少,这表明生殖生命阶段是EE变异性的关键.
科学领域:
- 代谢生理学 代谢生理学
- 人类生物学 人类生物学
- 进化生物学是进化的生物学.
背景情况:
- 代谢速率,包括基底,活动和总能耗 (EE),男性的变化比女性更大.
- 这种更大的男性变异 (GMV) 可能与男性性特征 (如肌肉和运动能力) 有关,这些特征在年轻成年期变化很大,达到顶峰.
- 该研究调查了EE变异模式是否与不同生命阶段的男性性特征的发育和高峰期保持一致.
研究的目的:
- 为了比较男性和女性在生活阶段的总体,活动和基本能量消耗 (EE) 的变化.
- 评估EE中更大的男性变异 (GMV) 是否在年轻成年期最突出,与男性性特征相关.
- 检查EE变异,形态特征和生殖生命阶段之间的关系.
主要方法:
- 对大型数据集的分析,比较了总EE,活动EE和基本EE的男性和女性变化.
- 在分析中包括身高,无脂肪质量和脂肪质量等形态特征.
- 通过不同生命阶段的变化模式进行比较,从年轻成人到老年人群.
主要成果:
- 总EE和某种程度上活动EE在年轻成年人中显示出更大的男性变异 (GMV),而在老年人群中这种变异下降.
- 基底EE和形态特征 (身高,脂肪质量,无脂肪质量) 并没有始终遵循随着年龄增长的GMV下降的模式.
- 这些发现表明,虽然个体男性的性特征可能不会在年轻成年期达到GMV的峰值,但影响总和活动EE的综合特征确实在生殖生命阶段显示GMV的峰值.
结论:
- 在总和活动能量消耗 (EE) 中,男性的更大变化 (GMV) 在生殖生命阶段,特别是年轻成年期最为明显.
- 这种模式表明,与男性生殖功能相关的形态和生理特征的联合影响推动了EE的变化.
- 虽然基底EE和基本形态学可能不会表现出这种与年龄相关的GMV模式,但男性的整体能量动态显示出与生命阶段和生殖状况相关的显著变化.
相关概念视频
01:27Signs of Puberty
409
Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
409
00:51Energy Budgets
9.3K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
9.3K
01:19Energy Balance
446
The human body gets energy from the three macronutrients: carbohydrates, proteins, and fats. Energy is released when the chemical bonds in the organic compounds present in the food are broken down. The energy content of food is measured in kilocalories (kcal), defined as the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius. This value is determined by measuring the temperature change of the water surrounding a calorimeter after the complete...
446
01:25Metabolic Rate
412
The human body is a powerhouse of energy, with every cell performing numerous functions that require energy. This energy production and consumption is measured by the metabolic rate, which quantifies the total heat generated by all the body's chemical reactions and mechanical work. This measurement helps to determine the rate of kilocalorie (kcal) consumption needed to fuel all ongoing activities.
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence...
The Basal Metabolic Rate (BMR) measures the energy expended at rest.
Several factors influence...
412
01:28Factors Affecting Body Temperature
4.4K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
4.4K
02:32Variation: Normal Distribution, Range, and Standard Deviation
22.3K
In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
22.3K