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Older adults were tested to clarify findings of an earlier examination of movement responses to shifting task requirements (Williams et al., 1993). Eleven participants (average age = 77 years) were evaluated on form and velocity as they performed overarm throws for force and accuracy. Significant gender and force-accuracy differences occurred for resultant velocity. Although no statistically significant differences occurred for force-accuracy comparisons of movement form, there were trends toward change in most movement components. Additionally, many individuals displayed change in one or more components as they shifted from force to accuracy throws. Results of this study point to the importance of examining developmental status and task requirements simultaneously.
Kathleen Williams is with the Department of Exercise and Sport Science, University of North Carolina at Greensboro, Greensboro, NC 27412-5001. Kathleen Haywood is with the Department of Physical Education, University of Missouri-St. Louis, St. Louis, MO 63121-4499. Ann VanSant is with the Division of Physical Therapy, Temple University, Philadelphia, PA 19122.