This document discusses postural control and balance. It defines key terms like static and dynamic balance, center of mass, center of gravity. It describes the different sensory systems, motor responses, and strategies involved in maintaining balance. Common balance impairments after stroke are described. Several clinical balance tests are mentioned. The principles of balance training include progressive challenge, use of feedback, and training functional tasks. Safety during balance training is also addressed.
This presentation give an upto date insightful information on balance/postural assessment and key domains of Occupational Therapy during assessment of balance using different scales.
BALANCE
BALANCE SYSTEM
TYPES OF BALANCE
MECHANISM
CORRELATION
BALANCE TRAINING
MANAGEMENT
STRATEGIES
PHYSIOTHERAPY INTERVENTION
BALANCE TRAINING IN ELDERLY
OUTCOME MEASURES
This presentation give an upto date insightful information on balance/postural assessment and key domains of Occupational Therapy during assessment of balance using different scales.
BALANCE
BALANCE SYSTEM
TYPES OF BALANCE
MECHANISM
CORRELATION
BALANCE TRAINING
MANAGEMENT
STRATEGIES
PHYSIOTHERAPY INTERVENTION
BALANCE TRAINING IN ELDERLY
OUTCOME MEASURES
NDT, BOBATH TECHNIQUE, BASIC IDEA OF BOBATH, CONCEPT OF BOBATH, NEUROPHYSIOLOGY OF NDT, ICF MODEL, PRINCIPLES OF TREATMENT OF NDT IN STROKE AND CP, AUTOMATIC AND EQUILIBRIUM REACTIONS, KEY POINTS OF CONTROL, FACILITATION, INHIBITION AND HANDLING IN NDT
Hierachical theory- says that higher centers control on lower center; but when higher center damage then this inhibitory control from the higher center is loss which leads to exageration of the movt.
In normal individual, these occur a smooth, rhythmic movt. Because there is a presence of control from higher center on lower center.
It is a technique developed by Janet H Carr and Roberta B Shepherd which provides physiotherapists and occupational therapists with an approach to stroke rehabilitation that is clear, relevant, and effective, building on the research-based model created by the authors
Retraining of motor control basing on understanding of normal movement & analysis of motor dysfunction.
Emphasis of MRP is on practice of specific activities, the training of cognitive control over muscles & movt. Components of activities & conscious elimination of unnecessary muscle activity.
In rehabilitation programme involve – real life activities included.
Introduction to Balance and its concepts, Impaired balance and then management of impaired balance.
Based on Therapeutic Exercise Foundations and Techniques
Gait, Phases of Gait, Kinamatics and kinetics of gaitSaurab Sharma
Intended for BPT 1st year undergraduate students.
Acknowledgement: Swathi Ganesh, my classmate during MPT prepared the slide which I modified for the purpose of teaching students.
NDT, BOBATH TECHNIQUE, BASIC IDEA OF BOBATH, CONCEPT OF BOBATH, NEUROPHYSIOLOGY OF NDT, ICF MODEL, PRINCIPLES OF TREATMENT OF NDT IN STROKE AND CP, AUTOMATIC AND EQUILIBRIUM REACTIONS, KEY POINTS OF CONTROL, FACILITATION, INHIBITION AND HANDLING IN NDT
Hierachical theory- says that higher centers control on lower center; but when higher center damage then this inhibitory control from the higher center is loss which leads to exageration of the movt.
In normal individual, these occur a smooth, rhythmic movt. Because there is a presence of control from higher center on lower center.
It is a technique developed by Janet H Carr and Roberta B Shepherd which provides physiotherapists and occupational therapists with an approach to stroke rehabilitation that is clear, relevant, and effective, building on the research-based model created by the authors
Retraining of motor control basing on understanding of normal movement & analysis of motor dysfunction.
Emphasis of MRP is on practice of specific activities, the training of cognitive control over muscles & movt. Components of activities & conscious elimination of unnecessary muscle activity.
In rehabilitation programme involve – real life activities included.
Introduction to Balance and its concepts, Impaired balance and then management of impaired balance.
Based on Therapeutic Exercise Foundations and Techniques
Gait, Phases of Gait, Kinamatics and kinetics of gaitSaurab Sharma
Intended for BPT 1st year undergraduate students.
Acknowledgement: Swathi Ganesh, my classmate during MPT prepared the slide which I modified for the purpose of teaching students.
Detailed explanation about balance and balance training.
Balance refers to an individuals ability to maintain their line of gravity within their Base of support (BOS). It can also be described as the ability to maintain equilibrium, where equilibrium can be defined as any condition in which all acting forces are cancelled by each other resulting in a stable balanced system.
BALANCE SYSTEMS:
The following systems provides input regarding the body's equilibrium and thus maintains balance.
Somatosensory / Proprioceptive System
Vestibular System
Visual System
The Central Nervous System receives feedback about the body orientation from these three main sensory systems and integrates this sensory feedback and subsequently generates a corrective, stabilizing torque by selectively activating muscles. In normal condition, healthy subjects rely 70% on somatosensory information and 20% Vestibular & 10% on Vision on firm surface but change to 60% vestibular information, 30% Vision & 10% somatosensory on unstable surface.
SOMATOSENSORY SYSTEM:
Proprioceptive information from spino-cerebellar pathways, processed unconsciously in the cerebellum, are required to control postural balance. Proprioceptive information has the shortest time delays, with monosynaptic pathways that can process information as quickly as 40–50 ms and hence the major contributor for postural control in normal conditions.
VESTIBULAR SYSTEM:
The vestibular system generates compensatory responses to head motion via:
Postural responses (Vestibulo-Spinal Reflex) - keep the body upright and prevent falls when the body is unexpectedly knocked off balance.
Ocular-motor responses (Vestibulo-Ocular Reflex) - allows the eyes to remain steadily focused while the head is in motion.
Visceral responses (Vestibulo-Colic Reflex) - help keep the head and neck centred, steady, and upright on the shoulders.
VISUAL SYSTEM:
For non-impaired individuals, under normal conditions the contribution of visual system to postural control is partially redundant as the visual information has longer time delays as long as 150-200 ms.
Friedrich et al. observed that adults with visual disorders were able to adapt peripheral, vestibular, somatosensory perception and cerebellar processing to compensate for their visual information deficit and to provide good postural control.
In addition, Peterka found that adults with bilateral vestibular deficits can enhance their visual and proprioceptive information even more than healthy adults in order to reach effective postural stability.
The influence of moving visual fields on postural stability depends on the characteristics of the visual environment, and of the support surface, including the size of the base of support, its rigidity or compliance.
TYPES OF BALANCE:
Balance can be classified in to :
Static Balance:
Dynamic Balance
Role of various systems to maintain balance.
Role of sensory systems-vision,proprioceptors,vestibular
Role of Musculoskeletal system
Biomechanics in balance
Contextual factors in balance
Role of nervous system
Strategies-ankle, hip,stepping
Posture - a perquisite for functional abilities in daily life. Posture is a combination of anatomy and physiology with inherent application of bio-mechanics and kinematics. Sitting, standing, walking are all functional activities depending on the ability of the body to support that posture to carry out each activity. Injuries and pathologies either postural or structural can massively change the bio-mechanics of posture and thus affect functional abilities.
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Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
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Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
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2. one of the most common problems treated
by physical therapists.
are thought to be common after stroke, and
they have been implicated in the poor
recovery of activities of daily living (ADL) and
mobility and an increased risk of falls.
3.
4. “…the ability to maintain the body’s center of
gravity over its base of support with minimal
sway or maximal steadiness.”
(Emery et.al, 2005)
a complex process involving the reception
and organization of sensory inputs and the
planning & execution of movement to
achieve a goal requiring upright posture
5. is the set of functions which maintains man’s
upright during stance and locomotion by
detecting and correcting displacement of the
line of gravity beyond the BOS.
6. Postural control – involves controlling the
body’s position in space for the dual purposes
of stability and orientation.
Postural orientation –The control of relative
positions of the body parts by skeletal
muscles with respect to gravity and each
other.
7. Center of mass. The COM is a point that corresponds to the
center of the total body mass and is the point where the body
is in perfect equilibrium. It is determined by finding the
weighted average of the COM of each body segment.
Center of gravity. The COG refers to the vertical projection
of the center of mass to the ground. In the anatomical position,
the COG of most adult humans is located slightly anterior to
the second sacral vertebra or approximately 55% of a person’s
height.
Terminologies…
8. Postural stability - The condition in which
all the forces acting on the body are balanced
such that the center of mass (COM)is with in
the stability limits or boundaries of BOS
Normal anterior/posterior sway – 12 degrees from
most posterior-anterior position.
Lateral sway - 16 degrees from side to side.
If sway exceeds boundaries, compensation is
employed to regain balance.
9. Static balance - the base of support (BOS)
remains stationary and only the body center
of mass (COM) moves.The balance task in
this case is to maintain the COM within the
BOS or the limit of stability (the maximal
estimated sway angle of the COM).
Maintaining a stable antigravity position
while at rest such as when standing and
sitting
10. Automatic postural reactions - maintaining
balance in response to unexpected external
perturbations, such as standing on a bus that
suddenly accelerates forward.
11. Dynamic balance - Maintaining balance
when a person is moving from point A to
point B, where both the BOS and COM are
moving, and the COM is never kept within the
BOS.
is stabilizing the body when the support
surface is moving or when the body is moving
on a stable surface such as sit-to-stand
transfers or walking
12. • Reactive control - in response to external
forces (perturbation).
• Proactive control – in anticipation of internal
forces imposed on the body’s own
movements.
13.
14. Balance control is very complex and involves
many different underlying systems.
Postural control results from a set of
interacting systems that work cooperatively
to control both orientation and stability of
the body.
16. Joint range of motion
Spinal flexibility
Muscle properties
Biomechanical relationships among linked
body segments
17. Motor processes (neuromuscular response
synergies)
Sensory processes ( visual, vestibular, and
somatosensory systems)
Higher-level integrative processes
• Mapping sensation to action
• Ensuring anticipatory and adaptive aspects of postural
control
18. ADAPTIVE POSTURAL
CONTROL
Involves modifying sensory
and motor systems in
response to changing task
and environmental
demands
ANTICIPATORY POSTURAL
CONTROL
Involves preparing the
sensory and motor systems
for postural demands
based on previous
experience and learning
21. Minimize the effect of gravitational forces,
which tend to pull us off center
The ideal alignment in stance allows the body
to be maintained in equilibrium with the least
expenditure of internal energy.
22. STANDING ALIGNMENT
Head balanced on level
shoulders
Upper body erect,
shoulders over hips
Hips in front of ankles
Feet a few cm (10 cm)
apart
SITTING ALIGNMENT
Head balanced on level
shoulders
Upper body erect
Shoulders over hips
Feet and knees a few cm
apart
23. The force with which a muscle resists being
lengthened (Basmajian and De Luca, 1985)
Keeps the body from collapsing in response
to the pull of gravity
24. Increased level of activity in antigravity
muscles
Activation of antigravity muscles during quiet
stance.
Muscles that are tonically active during quiet
stance: gastrocsoleus, tibialis anterior,
gluteus medius,TFL, iliopsoas, and erector
spinae
26. Used when displacements are small.
Displaces COG by rotation about the ankle joint.
Posterior displacement of COG – Dorsiflexion at
ankle, contraction of anterior tibialis, quadriceps,
abdominals.
Anterior COG displacement – Plantar flexion at
ankle, contraction of gastrocnemius, hamstring,
trunk extensors.
27. Employed when ankle motion is limited,
displacement is greater, when standing on
unstable surface that disallows ankle strategy.
Preferred when perturbation is rapid and near
limits of stability.
Post. Displacement COG – Backward sway,
activation of hamstring and paraspinals.
Ant Displacement COG – Forward sway,
activation of abdominal and quadricep muscles.
28. If displacement is large enough, a forward
or backward step is used to regain
postural control
29. The movement strategy utilized to control
mediolateral perturbations involves shifting
the body weight laterally from one leg to
other.
Hips are the key control points of weight shift
strategy. they move the COM in a lateral
plane primarily through activation of hip
abductor and adductor muscles.
30. This strategy is observed during balance tasks
when a person quickly lowers his or her body
COM by flexing the knees, causing associated
flexion of the ankles and hips.
31.
32.
33.
34.
35. The maintenance of balance is based on an
intrinsic cooperation between the
Vestibular system
Proprioceptive
Vision
Postural control does not only depends on
the integrity of the systems but also on
the sensory integration with in the CNS,
visual and spatial perception, effective
muscle strength and joint flexibility
36. Provides information regarding:
(1)The position of the head relative to the environment;
(2)The orientation of the head to maintain level gaze;
(3)The direction and speed of head movements because
as your head moves, surrounding objects move in the
opposite direction.
Provide a reference for verticality
Visual stimuli can be used to improve a person’s
stability when proprioceptive or vestibular inputs are
unreliable by fixating the gaze on an object.
37.
38. Since most individuals can keep their balance
when vision is occluded
In addition, visual inputs are not always an
accurate source of orientation information
about self-motion.
Visual system has difficulty distinguishing
between object motion, referred to as
exocentric motion, and self-motion, referred
to as egocentric motion.
39. Provides the CNS with position and motion
information about the body with reference to
supporting surfaces
Report information about the relationship of
body segments to one another
Receptors: muscle spindles, Golgi tendon
organs, joint receptors, and cutaneous
mechanoreceptors
40. A powerful source of information for postural
control
Provides the CNS with information about the
position and movement of the head with
respect to gravity and inertial forces,
providing a gravitoinertial frame of reference.
Distinguish exocentric and egocentric
motions
41. SEMICIRCULAR CANAL
Sense angular acceleration
of the head
Sensitive to fast head
movements ( those that
occur during gait or
imbalance such as slips,
trips, and stumbles)
OTOLITH ORGANS
Signal linear position and
acceleration
Source of information
about head position with
respect to gravity
Respond to slow head
movements (those that
occur during postural sway)
42. Vestibular, visual, and somatosensory inputs
are normally combined seamlessly to
produce our sense of orientation and
movement.
Incoming sensory information is integrated
and processed in the cerebellum, basal
ganglia, and supplementary motor area.
43. Somatosensory information has the fastest
processing time for rapid responses, followed
by visual and vestibular inputs
When sensory inputs from one system are
inaccurate the CNS must suppress the
inaccurate input and select and combine the
appropriate sensory inputs from the other
two systems.
44.
45.
46.
47.
48. Injury to or diseases of the structures (e.g. eyes,
inner ear, peripheral receptors, spinal cord,
cerebellum, basal ganglia, cerebrum)
Damage to Proprioceptors
Injury to or pathology of hip, knee, ankle, and
back have been associated with increases
postural sway and decreased balance
Lesions produced by tumor , CVA, or other
insults that often produced visual field losses
49. Patients with muscle weakness and poor control
lack effective anticipatory, ongoing, and
reactive postural adjustments and therefore
experience difficulty in:
Supporting the body mass over the paretic lower
limb
Voluntarily moving the body mass from one lower
limb to another
Responding rapidly to predicted and unpredicted
threats to balance
50. Changing the base of support
Restricting movement of body mass
Using hands for support
51. Wide BOS
Shuffling feet with inappropriate stepping
Shifting on the stronger leg
52. Stiffening the body with altered segmental alignment
Moving slowly
Changing segmental alignment to avoid large shifts in COG
standing reaching forward - flexing at hips instead of
dorsiflexing ankles
standing reaching sideways - flexing trunk sideways
instead of moving body laterally at hips and feet
sitting reaching sideways - flexing forward instead of to
the side
in standing - not taking a step when necessary.
56. Romberg tests: measure static balance while standing with
eyes open and eyes closed
Unipedal stance test: timed one-leg stance test that
provides simple measure of static balance; two conditions:
eyes open, eyes closed
Clinical test of sensory integration of balance: evaluates the
contributions of the visual, proprioception, and vestibular
sensory systems to balance
57. Functional reach tests: measure maximum distance one
can reach beyond an arm’s length without losing balance or
moving the feet
Timed up and go tests: assess dynamic balance and agility
of older adults
Star excursion balance test: provides a significant challenge
to athletes and physically active individuals
58.
59.
60.
61.
62. The clinical test of sensory integration on
balance test (CTSIB) also called as foam and
dome test.
63.
64. Balance cannot be trained in isolation from
the actions which must be relearned.
▪ In training walking, standing up and sitting
down, reaching and manipulation… postural
adjustments are also trained, since acquiring
skill involves in large part the fine tuning of
postural and balance control.
65. Postural adjustments are specific to each
action and the conditions under which it
occurs.
It cannot be assumed that practice of one action
will transfer automatically into improved
performance in another.
66. Progressive complexity is added by
increasing the difficulty under which goals
must be achieved, keeping in mind the
various complex situations in which the
patients will find themselves in the
environment in which they live, both inside
and outside their homes, and the precarious
nature of balance.
67. As control over balance and confidence
improves, tasks are introduced which require
a stepping response, and responses to
external constraints such as catching a
thrown object and standing on a moving
support surface
68. Use a gait belt any time the patient practices
exercises or activities that challenge or destabilize
balance.
Stand slightly behind and to the side of the patient
with one arm holding or near the gait belt and the
other arm on or near the top of the shoulder (on the
trunk, not the arm).
Perform exercises near a railing or in parallel bars to
allow patient to grab when necessary.
Do not perform exercises near sharp edges of
equipment or objects.
69. Have one person in front and one behind when
working with patients at high risk of falling or during
activities that pose a high risk of injury.
Check equipment to ensure that it is operating
correctly.
Guard patient when getting on and off equipment
(such as treadmills and stationary bikes).
Ensure that the floor is clean and free of debris.
70.
71. A variety of mode can be used to treat balance
impairment
Begin with weight shifts on a stable
surface
Gradually increase sway
Increase surface challenges (mini-tramp,
etc.)
72. Rehabilitation balls ,foam rollers ,foam
surfaces are often used to
• Provide uneven or unstable surface for
exercise
• Sitting balance ,trunk stability, and weight
distribution can be trained on a chair, table,
or therapeutic ball
Pool is an ideal palace for training balance
73. Awareness of posture and the position of the
body in space is fundamental to balance training
Begin in supine or seated position
Over sessions, use a variety of arm positions,
unstable surfaces, single leg stances, etc.
Training both Static posture & Dynamic
posture
Mirrors can provide postural feedback –Visual
feedback
74. Adding movement patterns to acquired stable
static postures increases balance challenge.
Add ant./post. sway to increase stability limits
Trunk rotations and altered head positions alter
vestibular input.
Stepping back/forward assists in re-stabilization
exercises.
75. From simple to complex involves
• BOS – Advance from wide to narrow base
• Posture – Stable to unstable posture (sway)
• Visual – Closing of the eyes
• COG – Greater disruption to elicit hip or stepping
strategy
Progress to more dynamic activities, unstable surfaces,
and complex movement patterns
Frequency,intensity,and duration
76.
77. Normal postural activity forms necessary
background for normal movement and for
functional skills
Flaccid stage – balance exercises in sitting
Stage of spasticity – practice symmetrical
weight bearing in standing, weight shifting,
bending of knees and hips
78. For stability
Combination of isotonics
Stabilizing reversals
Rhythmic stabilization
79. Analysis of task
• Individual
• Task
• Environment
Practice of missing components
• Strategy training
• Impairment and strategy level
Practice of whole task
• Functional level
Transference of learning
90. acute stage post-stroke
Head and trunk movements
Reaching actions
To progress:
Increasing distance to be reached
Varying speed
Reducing thigh support
Increasing object weight and size to involve both upper limbs
Adding an external timing constraint such as catching or
bouncing a ball
91. Head and body movements
Reaching actions
Single limb support
Sideways walking
Picking up objects
92.
93. The following main aspects should be developed:
Antigravity support or weight bearing on the feet
Postural fixation of the head on the trunk and on the
pelvis in the vertical
Control of anteroposterior weight shift of the child’s
COG
Control of lateral sway from one foot to the other.
Tilt reactions in standing
Saving from falling (strategies)
94. Training should check:
Equal distribution of weight on each foot
Correction of abnormal postures
Building up of the child’s stability by decreasing
support
Delay training in standing and walking if the child is
not ready
Weight shift leading to stepping
Training lateral sway
Training on different surfaces
96. Adler SA, Beckers D, & Buck M (1993). PNF in practice. Berlin, Springer-Verlag.
Carr JH & Shepherd RB (2003). Stroke rehabilitation: Guidelines for exercise and
training to optimize motor skill. Edinburgh, Butterworth-Heinemann.
Davies PM (1985). Steps to follow:A guide to the treatment of adult hemiplegia.
Berlin, Springer-Verlag.
Kisner C & Colby LA (2007).Therapeutic exercise: Foundations and techniques (5th
ed). Philadelphia, F. A. Davis Company.
Levitt S (2004).Treatment of cerebral palsy and motor delay (4th ed). Singapore,
McGraw-Hill Inc.
Sawner K & LaVigne J (1992). Brunnstrom’s MovementTherapy in hemiplegia:A
NeurophysiologicalApproach (2nd ed). Philadelphia, J.B. LippincottCompany.
Shumway-Cook, A &Woollacott, M. (2001). Motor control:Theory and practical
applications (2nd ed.). Philadelphia: LippincottWilliams &Wilkins.