在生长过程中,中部胃角肌的肌肉结构
1Faculty of Sport Management, Department of Sport Management, Shobi University, 1-1-1, Toyoda-cho, Kawagoe, Saitama, 350-1110, Japan. y-mogi@s.shobi-u.ac.jp.
Journal of physiological anthropology
|December 30, 2024
概括
在男孩中,生长增加了中部胃角肌 (MG) 肌肉的大小和带长度. 青春期前期和青春期之间,角变化有所不同,影响肌肉功能发育.
科学领域:
- 人体生理学 人体生理学
- 生物力学 生物力学
- 发展生物学 发展生物学
背景情况:
- 肌肉结构显著影响肌肉功能.
- 了解肌肉结构中与生长相关的变化对于对人类运动和体育表现发展的洞察至关重要.
- 中部胃肌 (MG) 肌肉结构的特定生长模式在很大程度上仍然没有特征.
研究的目的:
- 调查生长对中部胃角肌肉结构 (MG) 的影响.
- 分析儿童和青少年时期肌肉厚度,角和带长度如何变化.
主要方法:
- 利用亮度模式超声波测量MG肌肉厚度,笔纹角和146名日本男孩 (年龄6.217.9岁) 的带长度.
- 计算的相对肌肉厚度 (绝对肌肉厚度除以体重<1/3>).
- 作为成熟度指数,从峰值身高速度开始使用几年,并在各年龄段和子组 (512和1219岁) 进行回归分析.
主要成果:
- 成熟度指数和时间学年龄都显示出与MG的相对肌肉厚度,笔纹角和带长度的正相关性.
- 在子组分析中,时间学年龄与笔纹角,束长度和绝对肌肉厚度有显著的相关性,除了512岁子组的笔纹角外.
- 指示肌肉缩和带长度延长发生在生长过程中.
结论:
- 肌肉缩和筋长度的延长是介质胃膜 (MG) 增长的关键组成部分.
- 在青春期前和青春期之间,MG笔角的发育轨迹有所不同.
- 这些发现为下肢肌肉结构的成熟变化提供了关键的见解,这与运动发育和运动潜力有关.
相关概念视频
Muscles of the Leg that Move the Foot and Toes
1.0K
The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles....
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles....
1.0K
Muscles that Move the Leg
989
The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed...
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed...
989
Changes in the Appendicular Skeleton with Age
1.8K
The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
1.8K
Bones of the Lower Limb: Femur and Patella
1.9K
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
1.9K
Muscles that Move the Thigh
684
The thigh's motion is primarily governed by muscles originating in the pelvic girdle and inserted into the femur. One crucial muscle, the iliopsoas, is a combination of the psoas major and the iliacus muscles, sharing a common insertion point on the lesser trochanter of the femur.
Three other significant muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus originates from the posterior surface of the ilium, sacrum, and coccyx, and the thoracolumbar...
Three other significant muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus originates from the posterior surface of the ilium, sacrum, and coccyx, and the thoracolumbar...
684
Formation of Muscle Fibers from Myoblasts
3.6K
De novo myogenesis, or the formation of muscle fibers, begins during the early embryonic stages. The skeletal muscle is formed from somites– blocks of embryonic cell layers. The somites are further divided into dermatomes, myotomes, sclerotomes, and syndetomes. Among these, the myotomes give rise to muscle fibers.
Muscle progenitor cells (MPCs) are formed from the myotomes. MPCs express genes that encode the transcription factors Pax3 and Pax7. Along with Pax 3/7, other transcription...
Muscle progenitor cells (MPCs) are formed from the myotomes. MPCs express genes that encode the transcription factors Pax3 and Pax7. Along with Pax 3/7, other transcription...
3.6K


