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Standing balance and dynamic weight shifting were evaluated in 10 subjects with hemiplegia using a sensory organization balance test (SOT) and the Fugl-Meyer sensorimotor assessment (FMSA). The SOT is a timed balance test that evaluates somatosensory, visual, and vestibular function for maintenance of upright posture. In contrast, the FMSA is a functional(More)
The purpose of this study was to analyze the effects of prior instruction on automatic postural responses and voluntary postural sways measured about the ankle joint. Ten subjects with right hemiplegia resulting from a cerebrovascular accident (mean age = 56 +/- 14 years) and 5 healthy subjects (mean age = 47 +/- 6 years) stood symmetrically on a movable(More)
The purpose of this study was to describe the patterns of postural adjustments during induced body sway in healthy subjects and hemiplegic patients. Electromyograms were taken with surface electrodes from four lower extremity muscles that control ankle, knee, and hip motions. During postural adjustments in 10 healthy subjects, the ankle muscle and the(More)
The purpose of this study was to evaluate body-sway characteristics during anticipatory and reactive postural compensation. Mechanisms of postural control were studied during self-initiated rapid arm movements (RAMs) and unexpected support surface displacements (SSDs). Ten healthy subjects, 5 men and 5 women with a mean age of 28 years, were blindfolded and(More)
Standing balance was evaluated in ten subjects with hemiplegia using a sensory organization balance test (SOT). The SOT is a timed balance test which evaluates somatosensory, visual, and vestibular function for maintenance of upright posture. The duration of bilateral stance was assessed using combinations of three visual and two support surface conditions.(More)
Peripheral sensory modulation of balance behavior may require a "calibrated" mechanism which would maintain upright standing by a feedback control of torque at the ankle joint. The calibration of human balance was studied using a systematic presentation of perturbation excursions and velocities in normal freely standing subjects. All perturbations(More)
OBJECTIVE To assess dizziness handicap and postural recovery in 17 patients undergoing a vestibular ablative procedure. STUDY DESIGN Outcomes were compared between nine patients who underwent selective vestibular neurectomy and eight patients who underwent a transmastoid labyrinthectomy. SETTING Patients underwent ablative procedures at a tertiary care(More)
The symmetry and adaptability of long latency stretch responses was studied in a group of 4 adult hemiplegics and 5 normals of similar age. Subjects stood on a moveable platform which directly rotated the ankles unexpectedly during a series of horizontal anterioposterior (AP) translations. When the platform was rotated toes-up, long latency discharge of(More)
The onset latency and discharge amplitude of preprogrammed postural responses were evaluated in order to determine if the structure of synergistic activation could be altered by ligamentous laxity at the knee joint. Twelve subjects with unilateral and one subject with bilateral anterior cruciate ligament (ACL) insufficiency were tested while standing on a(More)
This retrospective study was undertaken to assess balance recovery and dizziness handicap in 32 patients after a vestibular and balance rehabilitation program. Outcomes were compared between 12 patients with peripheral vestibular disorders and 20 patients with central or mixed balance disorders. The patients were tested with posturography (sensory(More)