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Statics

Recommended Resources
Up Down All Around: Gymnastics Lesson Plans. (Series A, B, C). Ruschkin Publishing, 1994.
Statics [Video] (Gymnastics Series). Media House Productions, 1980.
Methodology [Video]. (Gymnastics Series). Media House Productions, 1980.

Introduction
The Basic Movement Pattern Statics is made up of hangs, supports, and balances. These three sub-concepts can be distinguished from each other by the location of the shoulders in relation to the base of support.

When performing a balance or a support, the shoulders are above the base of support. When hanging, the shoulders are located below the base of support (which is then referred to as the point of suspension).

In terms of the degree of stability, balances are less stable than supports and hangs. Hangs are inherently more stable than supports because for all hangs, the body's centre of gravity is located below the point of suspension.

All static positions are located on a continuum extending from very stable to very unstable. Balances are located near the unstable end of this continuum whereas hangs are nearer the other end. Supports may be anywhere on this continuum.



There is a simple way to help students determine whether a particular static position is stable or unstable. Student #1 holds a static position. Student #2 pushes against her or him. If only a light (weak) push is required to make student #1 "fall" (lose balance), then it is a balance; if a heavy (strong) push or pull is required to make the student "fall", it is a support. Falling occurs when the centre of gravity has moved outside the limits of the base of support.

The following table summarizes the Movement Principles associated with the concept of stability

More Stable Positions Less Stable Positions

Size of the base of support is larger.

Vertical distance between the centre of gravity and the base of support is shorter.

Horizontal distance between the centre of gravity and the limits of the base of support is longer.

Size of the base of support is smaller.

Vertical distance between the centre of gravity and the base of support is longer.

Horizontal distance between the centre of gravity and the limits of the base of support is shorter.

Sub-Concept : Supports
Focus : Body Awareness-Shapes


Front Support


Up Down All Around: Gymnastics Lesson Plans.
(Series A, Lesson 4). Ruschkin Publishing, 1994.
Reprinted with permission.



Back Support


Up Down All Around: Gymnastics Lesson Plans.
(Series A, Lesson 5). Ruschkin Publishing, 1994.
Reprinted with permission.


Supports are positions where a percentage of the weight of the body-usually 50-100%-is supported (born) by one or both arms or shoulders. Supports therefore contribute to the development of upper body muscular strength and endurance. They are usually categorized into front, back, side and cross supports, and are common to many gymnastics activities.

Supports may be stable (e.g., front support on the floor with hands and feet far apart) or unstable (e.g., front support on the floor with hands touching each other and feet together).


Physical Fitness
One of the primary reasons for having students perform supports is to provide them with opportunities to develop strength and endurance in the upper body-arm, shoulder, abdominal and back muscles. In order to develop muscular strength and endurance, opportunities must be provided for students to perform supports frequently, to remain in these positions for relatively long periods of time, and to support a greater percentage of their body weight while in support positions.



Less Development of Muscular Endurance and/or Strength

More Development of Muscular Endurance and/or Strength

Frequency

Students perform supports less often.

Duration

Students remain in the support positions for a short time.

Intensity

Students support a smaller percentage of their body weight while in the support positions.

Frequency

Students perform supports more often.

Duration

Students remain in the support positions for a longer time.

Intensity

Students support a larger percentage of their body weight while in the support positions.



Sample Learning Experiences

Adapt/Extend/Refine/Challenge/Apply


Vary the parts of the body.

Vary the actions of the body.

While in a front support, students flex their elbows and hold that position for a five-second count.

Vary the shapes of the body.

Vary the location or areas.

Vary the levels.

Vary the orientations.

Students perform supports where the body is horizontal... vertical ... inclined (feet are higher or lower than the shoulders).

Vary the force.

Students perform supports (front, back, side) where the arms bear 25...50...75...100 percent of the weight of the body.

Vary the time.

Students maintain support positions for different durations. Can you hold that support position for five seconds... while I count to 15... for 30 seconds?

Vary the relationships.

Vary elements of rhythm

(beat, tempo, accent, rhythmic pattern). Students maintain a support position for four beats, move into a different support during the next four beats and hold that position for four beats. This sequence is repeated a few times.

Vary several Movement Variables.

Students are challenged to solve movement problems such as the following.

Combine With Other Basic Movement Patterns.


Movement Sentences (Sequences)

. Students perform movement sentences that incorporate Supports, other Basic Movement Patterns and specified Movement Variables. The sequence content may be decided by the teacher, students and teacher, students in small groups, students individually. The sequence may be performed alone, with a partner, in small groups. For example:

Movement Analysis.

(See Movement Analysis Checklist on the next page).



Assessing Knowledge and Understanding of Movement Variables
A Sample Movement Analysis Checklist



Movement skill(s):
Front Support


Illustration(s) of the support
(may be drawn by students)

Movement Variables

Body
Part(s) (e.g., that support the weight of the body)
Action(s) of the body
Shape(s) of the body

Both hands and both feet
None
Narrow; angular (angle at the shoulder)

Space
Area(s) or Location(s)
Direction(s)
Level(s)
Orientation(s)
Pathway(s)
Range(s)

In self (personal) space
None
Low
The body as a whole is inclined; the arms are vertical
None
Medium

Effort
Force (e.g., percent of body weight supported by the arms)
Time (e.g., length of time the position is held)
Flow

A scale placed under the hands could be used to determine this percentage
None

Relationships
Of body parts (e.g., to each other; to equipment; to other persons)
To a partner or a group
To equipment
Other relationships

Arms parallel, arms at an 80 degree angle to the trunk
None
None

Sub-concept Balances
Focus Body Awareness


Not all balances are static , that is, balancing while the body is stationary. Some activities such as riding a bicycle, hopping on one foot and performing a series of cartwheels involve dynamic balancing-maintaining balance while traveling. The learning experiences in this section consist mainly of static balances.

Balancing involves keeping the body's center of gravity within the limits of the body's base of support. Losing one's balance or falling means that the centre gravity of the body is no longer above the base of support-it is outside the limits of the body's base of support.

Learning to balance prevents you from falling; learning to land prevents you from getting injured if you do fall!

When the body is kept tense it is easier to keep the center of gravity within the limits of the base of support. It is thus easier to maintain a balance position. When the body is relaxed, the center of gravity tends to move around. If the center of gravity moves outside the limits of the base of support, you fall. You "lose" your balance. The following activity will illustrate this principle. Balance a rigid object such as a broom vertically on one finger. Now try balancing a non-rigid object such as a length of flexible rubber hose, a sheet of paper.

Keeping the eyes focused on one spot-on the floor, the wall, the ceiling, the equipment-also helps to maintain balance by acting as an invisible "rope" connecting the body to the spot. Because of this visual connection, the body's center of gravity is more likely to remain still above the base of support.

In order to demonstrate control, students should be able to hold a balance position for at least five seconds (count of five-e.g., one Saskatchewan, two Saskatchewan... five Saskatchewan).


Refinement Cues




Sample Learning Experiences

Adapt/Extend/Challenge/Apply
Note: Unless indicated otherwise, all balances (unstable positions) are held for a count of five-approximately five seconds.

Vary the parts of the body.


Vary the actions of the body.


Vary the shapes of the body.



Vary the location or areas.

Vary the directions.

Lets see if you can hold unstable positions where the head points South and one foot points east...both arms point downward and one foot points upward...one hand points sideward to the left and one knee points upward...one body part points in a 0-degree direction, while another points in a 90-degee direction, a third body part points in a 180-degree direction, and a fourth points in a 270-degree direction.

Vary the levels.

Students hold different unstable positions at a low level...at a medium level...at a high level.

Vary the orientations.

Students hold unstable positions (balances) where the body is horizontal ... vertical... inclined... inverted (upside down).

Vary the pathways

(aerial). While in different unstable positions, students "draw" different pathways in the air.

Vary the time.


Vary the relationships.

Vary elements of rhythm

(beat, tempo, accent, rhythmic pattern).

Vary several movement variables.

Combine With Other Basic Movement Patterns.



Sub-concept Hangs
Focus Relationships-Body Parts
Hangs are static positions where the shoulders are below the equipment from which the body is hanging. They are very stable because the body's center of gravity is also below the point of suspension.
Many swings and locomotions can be performed while hanging.


Physical Fitness


Hangs contribute to the development of upper body muscular endurance, strength and flexibility.

While hanging, gravity exerts a downward pull on the body that stretches muscles and tendons. The muscular contractions required to counteract the force of gravity contribute to the development of muscular strength and endurance.

Hanging from the hands is one of the few activities that contribute substantially to the development of wrist (grip) strength that is needed when:

It is interesting to note that hanging from the hands with the body fully stretched is one of the few activities where the force of gravity works to take the pressure off the intervertebral disks. During most other activities, including sitting and walking, the disks are being compressed. The gymnastics "rings" were originally designed and commonly used for therapeutic and physical development purposes. It is only later that they evolved into the Olympic sport event that we know today.

Although hangs do contribute to the development of movement skills, their main function in elementary physical education is that of providing opportunities for students to increase their level of physical fitness.


Teaching Tips


In order to gain some of the physical benefits associated with hangs, students must be able to remain in hanging positions for some time. Some students, however, may not have the upper body strength required to perform hangs (from the hands) where they must bear their entire body weight. They could then keep the feet on the ground so the arms need bear only a portion of the weight of the body.

Students are sometimes deprived of opportunities to engage in hanging activities due to a lack of equipment from which they can hang. In some cases, it is not a lack of equipment that is the problem but rather the time required to set up, take down and put away the equipment.

One way to get around some of these problems is to use hockey sticks, hollow metal bars, broom ball sticks, etc. Standing on a mat, two students hold the stick or bar-one at each end-while a third student hangs in the middle. There are several advantages associated with this arrangement. The equipment is easily and rapidly taken out, distributed, and put away. It is also readily available, not costly, and can be used for a variety of other activities. The bar is usually held at waist level or shoulder level above a mat, thereby reducing the possibility of injury due to a fall. All three students are developing strength and endurance.



Sample Learning Experiences

Adapt/Extend/Challenge/Apply

Vary the parts of the body.

Vary the actions of the body.

While hanging from the hands, students:

Vary the shapes of the body.

Vary the areas/locations.

Vary the directions.

Let me see you hang by your hands with palms facing forward (overgrip)...with palms facing backward (undergrip)...with one palm forward and one backward (mixed grip).

Vary the level.

Students find different ways to hang at a low level...at a medium level...at a high level.

Vary the orientations.

Students find different ways to hang where the body is horizontal... vertical... inclined.

Vary the time.

Vary the relationships.

Vary the equipment.

Vary elements of rhythm

(beat, tempo, accent, rhythmic pattern). Students maintain a hang for four beats move into a different hang during the next four beats, and hold that position for four beats. This sequence is repeated a few times.

Combine With Other Basic Movement Patterns.


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