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Biomedical subjects

M M Lusardi

Publications and source records attributed to M M Lusardi.

2 recordsLinked to original sources

Development of a scale to assess concern about falling and applications to treatment programs.

This study used Rasch methodology to pursue three goals. First, we sought to demonstrate the psychometric limitations of the Falls Efficacy Scale (Tinetti, Richman, & Powell, 1990). Second, we addressed these limitations using a simultaneous calibration of the Falls Efficacy Scale and Mobility Efficacy Scale items. Third, we review previous explorations of the self-efficacy construct in relationship to health behaviors and discuss a possible treatment program based on the simultaneous calibrated items and Social Cognitive Theory. Results indicate that responses from the Falls Efficacy Scale fail to assess the higher ends of the self-efficacy continuum. Simultaneous calibration of items improved this lack of scale definition. This initial work in assessing self-efficacy perceptions provides a theoretical framework for planning treatment programs that may be more cost effective than collecting performance measures.

Accidental Falls↗

Modified sphygmomanometer versus strain gauge hand-held dynamometer.

The purpose of this study was to compare measurements of elbow flexor muscle strength obtained with a modified sphygmomanometer (MS) and a strain gauge hand-held dynamometer (HHD). Thirty-two healthy subjects performed two isometric contractions of about five seconds against each device. Repeated measurements with each device did not differ significantly and were correlated (r greater than .960) and reliable (intraclass correlation coefficients greater than .960). The means of two measurements obtained with each device were related in a curvilinear manner (R = .882), with MS measurements above 210 mmHg rising more slowly than corresponding HHD measurements. Although supporting the reliability of each device, the results suggest that the devices do not provide comparable measurements throughout the range of the MS. The MS may not be the best choice for obtaining accurate strength measurements of stronger individuals.

Adult↗