Exercise a prescription for all or not
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Exercise- a prescription for all or not?. Susan Edwards FCSP SRP. Historical perspective. no possibility of neuronal recovery orthopaedic approach clinical practice - change was possible review of neurophysiological rationale impaired reciprocal innervation skill acquisition and training

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Exercise a prescription for all or not

Exercise- a prescription for all or not?

Susan Edwards

FCSP SRP


Historical perspective

Historical perspective

  • no possibility of neuronal recovery

  • orthopaedic approach

  • clinical practice - change was possible

  • review of neurophysiological rationale

  • impaired reciprocal innervation

  • skill acquisition and training

  • FUNCTION


Exercise a prescription for all or not

UMN lesion

Abnormal muscular contraction

Weakness

Immobilisation at

short muscle length

Dynamic

Static

  • spasticity

  • spastic dystonia

  • spasms

  • co-contraction

  • clonus

  • associated reactions

  • flexor withdrawal

Biomechanical changes

  • reduced compliance

  • contracture

Hypertonia

+

Reduced ROM

Abnormal postures

Sheean 2001

Impaired function


Nervous and musculo skeletal system cannot be separated

Nervous and musculo-skeletal system cannot be separated

Balanced view of neural control of movement, biomechanical requirements for the task and limitations of CNS damage on both of these systems


Which therapy approach

Which therapy approach?

  • Physiotherapy is of value in the treatment of stroke but does it matter what type?(Kwakkel et al 1999)

  • Lack of relevant literature

  • 88% of UK physiotherapists use Bobath(Davidson and Waters 2000)

    What is it?


Exercise a prescription for all or not

Bobath (1990) suggested that excessive co-contraction of agonists and antagonists resultedin stiffness and slow, difficult movement.

More likely to contribute to limb stiffness in children with CP but in adults with stroke, the primary problem seems to be in the inability to produce adequate force in the agonist (Davies et al 1996)


Biomechanical model

Biomechanical Model

Over-emphasis on the neural control of movement has led to a neglect of the importance of muscle strength, force production and movement velocity


Exercise a prescription for all or not

Muscle Stretch

6 hours for CP child

(Tardieu et al 1988)

half hour for neurologically intact mouse!

(Williams 1990)

biomechanical properties of muscle –

optimal force at mid range

(Rothwell 1994)


Exercise a prescription for all or not

Task-specific training or practice approach

is showing enhanced evidence over

impairment-focussed approaches

(National Clinical Guidelines for Stroke 2002)


Exercise a prescription for all or not

Repetition

Variety of movement patterns

How often can a therapist carry out movements?

Need for regular exercise / stretching programme


Task specific training

Task-specific training

  • Programmes using CIMT focus attention towards the weaker limb and use repeated and extensive practice for up to 6 hours a day.

    (Liepert et al 2000)

  • Treadmill training with supported body weight

    - incomplete spinal cord injury (Deitz 2003)

    - stroke (Hesse 1995, 1999)


Muscle strength and aerobic fitness

Muscle Strength and Aerobic Fitness

  • Potential health benefits from regular exercise:

    - improved fitness and muscle strength

    - improved mood and sense of well-being

    - weight control

    - improved bone density

    - improved co-ordination


Muscle strength and aerobic fitness1

Muscle Strength and Aerobic Fitness

“Individuals with physical impairments will need a great deal of encouragement to engage in regular intensive exercise. This encouragement may not always be forthcoming from therapists who have been led to believe that effortful activity is harmful to their patients and must be avoided. However, recent evidence shows that this is not the case and that exercise should be an integral part of an overall rehabilitation programme.”

(Haas and Jones 2004)


Muscle strength and aerobic fitness2

Muscle Strength and Aerobic Fitness

“There is a consensus that muscle weakness is a feature in many neurological pathologies. The notion that increased co-activation of antagonistic muscles rather than muscular weakness is responsible for motor control problems has not been confirmed by scientific evidence.”

(Haas and Jones 2004)


American college of sports medicine guidelines

American College of Sports Medicine Guidelines

  • Strengthening programme, 8-10 separate exercises for major muscle groups

  • 8-10 repetitions

  • At least twice a week

  • Concentric as well as eccentric exercise

  • Normal breathing should be maintained during the exercises

  • Most patients will require supervision

  • Exercises through as full a range as possible


Aerobic training

Aerobic Training

  • General health check

  • Gradually build up time from 10 minutes to 30 minutes

  • Patients have reduced exercise capacity

  • Physiological burnout

  • Walking has greatest potential for increasing overall activity levels


Summary

Summary

Therapists need to encourage perseverance with tasks which are meaningful and at a level sufficient to induce changes in strength and fitness.

This should include on-going management / exercise outside of the ‘neurogym’ with more active collaboration with agencies providing leisure and social pursuits.


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