Task-oriented intervention in chronic stroke: changes in clinical and laboratory measures of balance and mobility.
OBJECTIVE
The objective of this study was to evaluate whether, after a task-oriented exercise program, the changes in clinical measures of balance and mobility were paralleled by changes in biomechanical parameters in subjects with chronic stroke.


METHODS
Ten stroke subjects took part in an 8-wk exercise program aimed at improving balance and mobility through various functional tasks. Subjects were evaluated before and after the exercise intervention. Clinical measures included the Berg Balance Scale and the Timed-Up-and-Go and laboratory measures included ground reaction forces and center of pressure displacement during four functional tasks.


RESULTS
Stroke subjects showed significant improvements (P < 0.05) in the clinical measures after completing the exercise program. Significant improvements (P < 0.05) were also found in postural steadiness during tandem stance and stool touch and in force production through the paretic lower limb during sit-to-stand. This last result was strongly correlated (r = -0.93) with the improvements on the Timed-Up-and-Go after exercise intervention. In contrast, the increase in postural steadiness was poorly correlated with the improvements on the Berg Balance Scale.


CONCLUSIONS
A task-oriented exercise program might improve both clinical and laboratory measures of balance and mobility in stroke subjects. However, several correlations between the changes in clinical and laboratory measures after exercise intervention were generally weak, indicating that these outcome measures assessed different components of improvements.
Leroux
Alain
A
Department of Exercise Science, Concordia University, Montréal, Québec, Canada.
Pinet
Hélène
H
Nadeau
Sylvie
S
D000203:Activities of Daily Living; D002908:Chronic Disease; D005081:Exercise Therapy; D005260:Female; D006306:Health Surveys; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology*; D009142:Musculoskeletal Physiological Phenomena; D026741:Physical Therapy Modalities; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology; D011446:Prospective Studies; D011597:Psychomotor Performance / Q000502:physiology*; D012047:Rehabilitation Centers; D020521:Stroke / Q000175:diagnosis; D000071939:Stroke Rehabilitation; D011795:Surveys and Questionnaires; D016896:Treatment Outcome