Biomedical subjects

W F Boyce

Publications and source records attributed to W F Boyce.

6 recordsLinked to original sources

PubMed1995

Reliability of the Gross Motor Performance Measure.

BACKGROUND AND PURPOSE: The reporting of reliability coefficients and the method of their determination is expected of test developers. The purpose of this study was to estimate the interrater, intrarater, and test-retest reliability of the Gross Motor Performance Measure, a measure of quality of movement designed to accompany the Gross Motor Function Measure. SUBJECTS: Subjects were 28 children (25 with cerebral palsy, 2 nondisabled, 1 with head injury) between the ages of 1 and 10 years. METHODS: Reliability data were obtained from assessments of 19 therapists. RESULTS: Intraclass correlation coefficients for reliability varied from .92 to .96 for the total scores and from .84 to .94 for the five attribute scores. CONCLUSION AND DISCUSSION: When the Gross Motor Performance Measure was administered by therapists who are familiar with the Gross Motor Function Measure and had a 1-day training workshop, reliability of the total scores was above recommended minimums. Scores of single attributes were less reproducible.

Cerebral Palsy↗

PubMed1995

The Gross Motor Performance Measure: validity and responsiveness of a measure of quality of movement.

BACKGROUND AND PURPOSE: This article presents the results of a study to validate a measure of gross motor performance for its capacity to detect changes in the quality of movement in children with cerebral palsy aged 0 to 12 years. SUBJECTS AND METHODS: On two occasions, 4 to 6 months apart, physical therapists from three children's treatment centers assessed 106 children with cerebral palsy, 18 children who had sustained an acute head injury, and 29 nondisabled children. Validity was demonstrated by comparing changes on the measure across diagnoses, severity, and age groups. RESULTS: Several a priori hypotheses were supported; however, relationships with parent and therapist ratings were not clearly demonstrated. CONCLUSION AND DISCUSSION: The measure was found to be differentially responsive to changes in "stable" and "responsive" groups.

Analysis of Variance↗

PubMed1994

Training users in the gross motor function measure: methodological and practical issues.

BACKGROUND AND PURPOSE: The Gross Motor Function Measure (GMFM) is a criterion-referenced observational measure for assessing change in gross motor function for children with cerebral palsy (CP). The purposes of this report are to present data on the effects of training pediatric developmental therapists to administer and score the GMFM and to discuss some practical and methodological issues associated with training. SUBJECTS AND METHODS: A weighted kappa estimate pretraining and posttraining workshop was used to determine participants' agreement of scoring a videotaped GMFM assessment against experts' scoring of the same videotaped assessment. Several children with CP, representing a spectrum of ages, severities, and levels of function, were shown on the videotape. RESULTS: There was a significant improvement in agreement from a mean kappa of .58 to .82 (t = 15.38, df = 75, P < .001) for the first group and from .81 to .92 (t = 10.91, df = 72, P < .001) for the second group following training. CONCLUSION AND DISCUSSION: Although there are a number of advantages to using videotapes to train test users and to assess scoring reliability, this method does not evaluate participants' ability to administer the measure. Further work is needed to determine whether reliability is maintained in a clinical situation in which it is necessary to both administer and score the GMFM.

Adolescent↗

PubMed1991

Measuring quality of movement in cerebral palsy: a review of instruments.

There is a lack of appropriate evaluation instruments in the area of quality of movement in cerebral palsy. Ten measures of quality of movement, or gross motor performance, published between 1965 and 1990, were reviewed according to established criteria. These criteria include the purpose of the measure, validity, reliability, responsiveness, range of items, and description of qualitative components. These measures provide a foundation for further instrument development in the area of quality of movement. [Boyce WF, Gowland C, Rosenbaum PL, et al. Measuring quality of movement in cerebral palsy: a review of instruments.

Cerebral Palsy↗

PubMed1991

Development of a quality-of-movement measure for children with cerebral palsy.

Development of a suitable measure of quality of movement, or gross motor performance, for children with cerebral palsy is a complex undertaking. A variety of conceptual, methodological, and practical issues inherent in such a project are discussed in this article. We report on the methodology used in the planning and construction of the Gross Motor Performance Measure. The measure has been developed by a multicenter, interdisciplinary group of therapists, methodologists, research staff, and international experts. Five attributes of gross motor performance have been defined, scaled, and operationalized. Results of content validity studies demonstrate that the measure has adequate completeness, clarity, and potential for evaluating change in quality of movement in children who have cerebral palsy. The measure is currently undergoing extensive testing to determine the reliability, validity, and responsiveness of the obtained scores. [Boyce WF, Gowland C, Hardy S, et al. Development of a quality-of-movement measure for children with cerebral palsy.

Cerebral Palsy↗

PubMed1990

Work and power in hemiplegic cerebral palsy gait.

The purpose of this descriptive study was to quantify the work that is accomplished by major muscle groups of the affected limb of 10 children with spastic hemiplegia secondary to cerebral palsy during walking. Cinematographic film and force-plate data were used in a biomechanical link-segment model to calculate the positive and negative work performed by the muscles around each joint. The results revealed that the ankle plantar flexors produced just over a third of the positive work for the affected limb instead of the normal two thirds. The greatest proportion of positive work was performed by the hip muscles. More research using work and power analyses will assist in prescribing and determining the effectiveness of treatments.

Ankle↗