Axis of Rotation - ACE
2017年2月1日 · Axis of rotation can be a difficult concept to grasp because it is an imaginary entity. In reference to human anatomy, axis of rotation is an imaginary line that projects through the pivot/rotation point in a joint (for example, the axis of rotation for flexing and extending the arm projects through the elbow joint).
Muscles That Move the Arm - ACE
2017年2月23日 · External shoulder rotation. From a position of internal shoulder rotation, rotate your arm so that the elbow faces backward. Also, anatomical position requires the shoulders to be in external rotation. This action at the shoulder can occur when your arm is in different positions (flexion, abduction, etc.). Infraspinatus and teres minor
Core Anatomy | Learn About Core Muscles | ACE Blog
2013年10月11日 · Trunk rotation (ipsilateral and contralateral rotation) Twist to the left and right. Internal and external obliques. Lateral trunk flexion. Bend to the side. Obliques and one side of rectus abdominis and erector spinae. Compression of the abdomen. Draw your belly button into your spine. Transverse abdominis. Spinal stability. Holds your spine ...
Scapulae | Muscles That Make It Move | ACE Blog
2017年5月2日 · As a fitness professional, you need a good working knowledge of anatomy so you can design safe and effective exercise programs for your clients. As a result, you also need to know this information to be able to pass your exam as well. In the first of an ongoing series, we’ll look at the movements of numerous body parts, beginning with the muscles that move the …
Muscles That Move the Leg - ACE
2017年2月23日 · Because of the anatomical configuration of the hip, there are no true primary internal rotators of the hip. Muscles that play a role in internal rotation when the hip is first flexed to 90 degrees are the tensor fasciae latae, adductors longus and brevis, pectineus and the anterior fibers of gluteus medius and minimus. External Rotation of the Hip
Functional Anatomy Series: The Shoulders - ACE
Many common resistance-training exercises designed to isolate specific muscles don’t account for the separate skeletal structures and how they are designed to move as a single unit. In this fourth installment of our functional anatomy series, we examine the four joints that make up the shoulder complex. Learn how the separate joints are designed to function as an integrated unit and the ...
The Planes of Motion Explained - ACE
2017年8月1日 · Rotation- Internal (inward) or external (outward) turning about the vertical axis of the bone Pronation - Rotating the hand and wrist medially from the bone Supination -Rotating the hand and wrist laterally from the bone
Functional Anatomy Series: The Adductors - ACE
The purpose of this ongoing functional anatomy series is to help health and fitness professionals develop an understanding of how muscles actually function as a component of an integrated system. This second installment focuses on the adductors of the inner thigh, an area of the body that many clients are interested in targeting.
What is the Kinetic Chain? - ACE
2019年1月8日 · The concept of the kinetic chain regarding anatomy has been around since 1955 when Dr. Arthur Steindler adapted the theory of Franz Reuleaux, a mechanical engineer. Reuleaux proposed that a series of overlapping segments are connected via a pin joint, and these interlocking joints would create a system that allows movement of one joint to ...
Shoulder Exercises | Rotator Cuff External Rotation - ACE
Place a cable pulley at about waist-height and attach a single handle, holding it in the left hand so that the right side of the body is closest to the mac