Biomedical subjects

G E Garrett

Publications and source records attributed to G E Garrett.

8 recordsLinked to original sources

PubMed1999

Kinematic analysis of obstacle clearance during locomotion.

This study investigated the effect of obstacles of different heights on the locomotion of 15 healthy subjects. The following parameters were studied: (1) the distance of the toe and heel markers from the obstacle during toe-off and heel contact, respectively, (2) the minimum clearance distance of the toe and heel markers, and (3) the angular displacements and velocities of the hip, knee, and ankle. Results show significant differences in joint angular kinematics and clearance distances as obstacle height increased. The kinematic and distance differences exhibited both strong linear and non-linear trends. Toe-off distance and heel contact distance did not change significantly with changes in obstacle height.

Adult↗

PubMed1997

Assessing lumbar stabilization from point-light and normal video displays of manual lifting.

Routinely, physical therapists use visual observation to assess qualitatively a patient's performance. The literature, however, indicates that assessments of gait and lumbar stabilization from visual observation are at best only moderately reliable. Point-light video displays have been used to study the visual perception of human motion. The present purpose was to examine the reliability of assessments made by a physical therapist when viewing point light and normal video displays of subjects performing a lifting task. Three physical therapists assessed lumbar stabilization by viewing normal and point-light displays of 25 subjects who lifted an 8-lb. milkcrate from floor to waist height. Greater agreement of the therapists' ratings of lumbar stabilization was achieved on assessments made from point-light displays than on those made from normal displays. This finding suggests that the use of point-light displays may improve the reliability of qualitative assessments of performance on motor tasks.

Biomechanical Phenomena↗

PubMed1979