Cystic Fibrosis is caused by a genetic disorder involving the
CF gene, in which both mother and father must carry the gene in order for the
disorder to occur in the fetus.At birth,
the infant has meconium ileus, which causes obstruction of the small and large
intestine, making fecal excretion difficult.
CF is characterized primarily by excessive production of mucus in the lungs and pancreases. Pulmonary
infection is seen because the excess mucus provides a favorable environment for the
bacteria to grow, therefore making breathing difficult. It also cloggs the pancreases,
in turn affecting digestion.
Cystic Fibrosis cannot be cured and majority of the individuals
with the disease die before age 30. Babies with CF can
live a nearly normal life though, with life expectancy increasing as treatment
methods increase. It is the most common genetic disorders, with 1 in 3,300
caucasian babies affected.
Proper nutrition is vital because a child who is otherwise
strong, healthy, and well nourished gives the CF therapies a better chance to
provide some relief. The earlier it is caught, the more effective the therapy
will be.
It is sometimes hard to diagnose at birth, because babies
with CF seem fine at birth but then develop breathing problems 4-6 weeks after
birth. Health care providers should look for poor growth, as well as nagging
cough and wheezing.
Friday, October 14, 2011
Fundamental Object-Control Skills of Childhood
Introduction:
Once a child can
ambulate without assistance, the hands become free to explore the environment,
allowing for object-control skills to be developed. Object-control skills
include throwing, catching, kicking, punting, and striking.
Throwing:
Throwing is
considered the most complex of the object-control skills, and displays five
stages of development. The most evident changes are that the movement
progresses from an anterior-posterior plan to a horizontal plane, and the base
of support changes from stationary to shifting position.
Ø1st stage
oFeet stationary
oArm dominated throw
oFaces direction of intended throw
oNo trunk/hip rotation
Ø2nd stage
oBody moves in horizontal plane, instead
of an anterior-posterior plan
oSegmented motion
oFeet remain stationary
Ø3rd stage
oLead step is ipsilateral or unilateral to the
throwing arm
oElbow flexion seen
Ø4th stage
oLead step is contralateral to the throwing arm
oHigh wind up (Arm horizontally adducted in
forward swing)
Ø5th stage
oContralateral step
oFollow through observed
Figure 1. Immature thrower.
Catching
Catching
involves bringing an airborne object under control using the hands and arms.
Catching has five stages, which is for the two handed catching. One handed
catching exists as well, but it is less successful.
Ø1st stage
oPassive movement
oFeet stationary
oPalms face upward
oMinimal, if any, attempt to adjust body or arms
Ø2nd stage
oPalms facing each other
oElbows slightly bent
oBall is trapped against body or “hugged.”
oFeet stationary
Ø3rd stage
oInitial step towards the ball
o“Scooping” of the ball is seen
Ø4th stage
oUse of the hands to catch the object instead of
the body
oHand-eye coordination present
Ø5th stage
oEntire body adjusted to control the object with
only the hands
oThe elbows are flexed to absorb the shock
Figure 2. Palms facing each other as infant catches ball.
Kicking
Kicking
is a form of striking but with your foot. Place kicking involves the ball being
stationary during the approach of the kick, and is differentiated by the level
of kicking skills.
Beginner
level kicker
ØMay only push the
ball forward with their feet or not pull their leg back before kicking it
ØNo follow
through
Intermediate
level kicker
ØSome flexion of
the knee and
ØBackswing present
ØArms elevated
ØSome follow
through but not as complete as an advanced kicker.
Advanced
level kicker
ØRunning start
ØLeap step onto support foot prior to striking the
ball
ØKicking leg flexed at the knee and
hyper-extended at the hip
ØFoot thrust
forward to strike the ball
Figure 3. Child runs up to ball and pauses.
Punting
Punting is different from kicking because it a) uses a ball
that’s always stationary and b) is a more complex process. Three components of
punting include the ball release arm component, ball contact, and leg action
component. There are also four stages of punting.
ØStage 1
oStationary
preparatory position
oBall
is held with both hands
oFlexion
at the hip and knee of punting legs
ØStage 2
oStationary during preparatory phase
oBall held in both hands and usually dropped
forward or upward
oNon support leg flexed at the knee
oGenerally the force created is upward, causing
performer to take step backward after the strike
ØStage 3
oPerformer moves forward for one or more steps in
preparation for the punt
oBall generally released in forward and downward
direction
oFollow through of the punting leg will carry the
punter ahead of the point where the ball was hit
ØStage 4
oPunters approach is rapid, one or more steps
then usually ends in a leap just prior to contact
oBall is contacted at or below knee level
oMomentum of the swinging leg carries the
performer off the surface in an upward and forward direction
Figure 4. Stage 4 punter.
Striking
Striking
involves some sort of contact with an object with either one of your hands,
both, or a tool such as a racket.
Inexperienced
Striker
ØArms up and flexed
ØUpward-downward
swing
ØThey may take a step
forward once with the same arm they are striking with
Advanced
Striker
ØSwing becomes more horizontal
ØContralateral step
ØTrunk rotation
added onto motion.
Figure 5. Use of the hands as the striking implement.
Applied Section
Knowledge
of the object control skills has some important application to our future work
in the medical field. By understanding the normal from the abnormal
development, we can properly intervene and potentially solve the dilemma with
the proper intervention. Although it will be difficult to prescribe treatment
due to the many constraints, knowledge of the object control skill will aid us
to the right diagnosis.
Possible
constraints we may be looking for includes:
ØBall size
ØBall velocity
ØInstruction
ØKnowledge and experience of the skill
With the
proper diagnosis we could find ways to help a developing child become strong
enough to perform these tasks. Also, in order to test for certain diseases and
disorders, a child could be assessed using some of these skills.
Walking:
or upright bipedal locomotion, is a critical fundamental locomotion skill as
the hands become free to explore, and consists of two phases. These two
phases are the swing phase and the support phase, and makes up the gait cycle.
Balance consists of two types, static and dynamic, that are essential to the
development of walking. Static balance is the ability to maintain posture in a
stationary position. Dynamic balance is balance obtained when the body is
in motion. At the beginning of walking, the infant is said to have a dynamic base,
which is where the child's feet are widened to increase balance. Children
also have a high guard arm position which helps protect them if they fall and
increases their balance. In terms of the infants feet, they tend to have
a flat footed step where the toes are pointed laterally or away from the body’s
center line. As the child gains neuromuscular control and the muscles become
more developed, they walk with improved balance, arms lower to side and work in
opposition to the legs, and the toes point in a more forward direction.
Figure 1. Toes pointed outward from body
Running:
is
sometimes referred to as the extension of walking, and consists of an alternate
support phase and an airborne phase. The support phase consists of the absorption
of impact by the leg, body support, and maintaining forward motion. The flight phase
is where the body is projected through space by the thrust leg. Lastly, a
recovery phase is achieved where the leg that thrust the body into the air
(support leg) enters a period of recovery. As with walking and jumping, balance
and muscular strength are needed for the development of running.
Figure 2. Body is projected through space by the thrust leg
Jumping:
is different from running, in that the body is airborne from force generated by
one or both legs, and the body can also land on one or both feet. Jumping can
be accomplished in several ways, including hopping and leaping. To
differentiate between the two, the landing of a hop will be on the same leg it
propelled with while a leap would result in landing on the non-propelling
leg. Two other types of jumping are the
vertical and horizontal jump. A vertical jump is when the body is going upward
while horizontal is upward, as well as outward. Jumping usually occurs in 4 different phases
which include the preparatory phase, takeoff, flight, and landing. Two
constraints in jumping include the strength of the individual and their ability
to get their body in the air, as well as the muscular power.
Figure 3.Child displaying a vertical jump
The
gallop, slide, and skip: These more complex motor patterns
do not appear until after the development of the single motor skills. Gallop is
the first to develop after running, and involves a forward step followed by the
trailing foot. The lead foot is initially with the dominant leg, but leading
with the non-preferred leg appear several years later.
The
slide is very similar to the gallop, except instead of moving forward, one
moves horizontally in sliding. This skill is hard to grasp for children because
the child must face a different direction from the intended movement. Finally,
skipping is the most difficult, because it involves an uneven rhythmical
pattern. Both step and hop must be accomplished on the same foot before
alternating.
Figure 4. Child skipping
Applied
Section: The fundamental locomotion skills described have
some application to our future in the medical field. As healthcare providers,
it is critical to understand the normal from the abnormal in order for proper
diagnosis to be accomplished. Furthermore, girls typically develop the
fundamental locomotion skills earlier than boys, so if a concerned mother came
in with her boy not skipping at six to seven years of age, we could inform her
that it is a normal occurrence. We could also prescribe her with the proper
exercise module to increase her child’s locomotion skills.
It is also essential to understand the process of
how each fundamental motor skill is obtained. Working as a future
physical therapist, it would be essential to understand the sequence of motor
movement in a fundamental skill to teach a patient who may have a
disability how to walk again. Another example would be trying to help an
athlete who has had knee surgery to rehabilitate his/her knee in the most
efficient manner, so he/she could return to play as quickly as possible.