Settling in the Latin dances

Posted on March 11, 2010
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Type settling hip movement in dances of Cuban origin

In literature published by the Latin-American Dance Imperial Society of Teachers of Dancing (ISTD) - the most important organization related to the development of dance sport in the UK and abroad-in the section reserved for dance Cha-cha-cha (or Rumba) are mentioned four types of motion of the hip:

Settling - weight is "placed" (to Settle = to sit, lie down, to file, etc.) of the leg (which sit = standing leg), leg stretched - this type of hip motion is used body begins to move;
Lateral - hips moving to the right and left with a minimum rotation (eg, Cuban Rocks);
Rotate - rotate hips in vertical axis represented the spine (in various degrees of rotation);
Twist - rotation is initiated only in balance (eg Hip Twist).

It also mentions also a correct position, right, high and natural

body must be kept in mind during these actions of the basin.

In what follows I intend to make further explanations useful (I hope) dancers - professionals or amateurs, or coaches, teachers, trainers, etc. in terms of settling movement.

Figure 1 - skeleton pool

For a better understanding will offer an introduction to the anatomy of the body pool.

Basin is a complex anatomical structures that connects the spine and legs - also called pelvic belt. Its main role is to provide weight to the legs and to support abdominal viscera. Pelvic skeleton consists of two bones, united by symphysis pubis and posteriorly above the sacro-coccigian segment of the spine, hip bones articulate with closely (see Fig. 1).

Sacred is a median and symmetrical bone, consisting of welding sacral vertebrae. He closes the upper basin. Base sacred look up and slightly forward and articulates with the fifth lumbar vertebra.

Basin can be considered as a whole without any problem because mobility between its segments is very low.

Femoral hip-joint (hip joint) is a type of cavity-nut joints, lubricated with a fluid with special properties - synovial fluid (the oil used in cars for example) in the human body. As the name scientific connects the hip bone (cavity) and the upper extremity of the femur (nut) or more precisely cotiloida cavity bounded by a rim (eyebrow) cotiloidiana articulate the joint head of the femur. Femur is a long bone, and unbalanced pair. Articular head is 2/3 of a sphere, is perfectly round and upwards, before and inside. Hip joint has three degrees of freedom - can work in all three spatial axes (x, y, z).

Joints, vertebral bodies are the upper and lower surfaces, slightly concave vertebral bodies between the discs found - formations fibro-cartilage, elastic. Compression of the latter in different areas (anterior, posterior, lateral) column run flexion (in front), extension (back), lateral bending, rotation.

Biomechanics settling movement.

Biomechanics is the science concerned with the study of movements of animals and human body in terms of mechanical laws. She studies the forms of motion, forces that produce motion, interactions between these forces and the forces that oppose motion. It is therefore a form of functional anatomical analysis of movements in mechanical terms. Etymologically, the term comes from Greek words, bios - life and mecha - car.

Fig.2	fig. 3

To simplify the physics that occurs we will consider moving levers varying bones, articulated in different areas, with points of support, etc.. Because of morphological irregularities of their bone longitudinal section usually does not overlap the simplified representation. A physical system thankful for what we have shown can be made up of four levers: column, basin and two femoral bones and joints associated (Fig. 2).

Send full spine weight (G) basin. Due to its symmetry is broken down equally weight (G / 2) and transmitted across the hip joint femoral bone. As a condition of the entire leg to be represented by a lever is stiff and right knee to be locked (pushed back) and the pad is completely on the floor (flat). Such forces are transmitted directly through a foot, inarticulately, the heel on the floor dancing.

Law no. 3 mechanics or Action and Reaction principle says that when a body acts on another body with a force (called task force), the second body with a force acts on the first (called the reaction force) equal and opposite force action. The floor acts so on foot with a force of reaction (R) equal to the task force (G / 2) but otherwise (R = G / 2). This consists in the pelvis and the mechanical system is in equilibrium. The system represented in Figure 2 schematizeaza split-weight position, feet slightly apart, weight distributed evenly on both feet.

In Figure 3 represent the same system but with feet together.

Disturbing the system by reducing contact with the floor at one leg bone transformation obsevam basin in a Grade 1 lever with unequal arms as a hip-femoral joint support and resistive force is applied extremity balance - it rises. (Fig. 4) .

fig. 4

Grade 1 lever principles are represented in Figure 5.

fig. 5

Dancer must show attention to maintaining verticality column, intervertebral discs compressing side is to neutralize the effect of counter-top area of the body (the chest). Be maintained and stretching the spine tone plays an important role because the do not want a trip down major segmetelor the upper spine (look fallen body, poor posture)

This movement is simple in that internal forces do not intervene body - muscle strength. It relies entirely on gravity, the blocking of the knee and foot relaxation of abdominal muscles to not oppose the lifting movement of the hip. While relaxing the abdominal muscles and buttocks should be done and release the weight of the leg that is going to move (in front of such a ride - walk forward). If position is not a lateral leg, but themselves to each other, then the balance will immediately describe a rotating natural back, which will weight before - thanks largely symmetrical shape of the femur.

Justin Istrate

Comments

4 Responses to "settling in the Latin dances"

ICSU on March 13th, 2010 11:21 am
dissertation gorgeous :) ... and yet I have is with settling in switchturn intrebare.cum sites in cha-cha.Cat relaxed is he ... or is entirely missing
hobbydance on March 14th, 2010 12:32 pm
There's settling in switchturn sites in cha-cha-cha, besides before initiating step during March, or if you want - at the end of time two
girbacea denis on March 16th, 2010 8:19 am
I love dancing and this is why I am enrolled the boy in the age of 9 years we are the salt of the sc rm # 5 and are coached by Denis and wife Irina
Dianette on April 27th, 2010 4:06 pm
This is by far the biggest story!