Purpose: This study examined body-scaled information that specifies the reach patterns of children with hemiplegic cerebral palsy and children with typical development.
Methods: Nine children with hemiplegic cerebral palsy (3-5 years) and 9 age-matched children with typical development participated in the study. They were required to reach and grasp 10 different pairs of cubes. Reach data were coded as either a 1-handed reach or a 2-handed reach. Dimensionless ratios were calculated by dividing the cube size by the maximal aperture between the index finger and thumb. A critical ratio was used to establish the shift from a 1-handed to an exclusive 2-handed reach.
Results: The critical ratio was not significantly different for either preferred or nonpreferred arms within and between groups. All children used an exclusive 2-handed reach at a similar dimensionless ratio.
Conclusion: Our study provides evidence of the “fit” between environment (cube size) and the individual's capabilities (finger aperture) for reaching for both groups.
This study of 18 children, 9 with hemiplegia and 9 in an age-matched control group, gives evidence that both groups show that the &#x201C;fit&#x201D; between cube size and the individual&#x0027;s finger aperture control reaching in both groups.
Department of Occupational Therapy and Graduate Institute of Behavioral Sciences, Healthy Aging Research Center (Dr Huang), Chang Gung University, Tao-Yuan, Taiwan; Department of Physical Therapy and Athletic Training (Drs Huang, Ellis, and Wagenaar), College of Health and Rehabilitation Sciences: Sargent, Boston University, Boston, Massachusetts; Division of Biokinesiology and Physical Therapy (Drs Huang and Fetters), University of Southern California, Los Angeles, California; Department of Pediatrics (Dr Fetters), Keck School of Medicine, University of Southern California, Los Angeles, California.
Correspondence: Hsiang-han Huang, ScD, OT, Department of Occupational Therapy and Graduate Institute of Behavioral Sciences, Healthy Aging Research Center, Chang Gung University, 259 Wen-Hwa 1st Rd, Kwei-Shan Tao-Yuan, Taiwan (firstname.lastname@example.org).
At the time this article was written, Hsiang-han Huang was a student at the Department of Physical Therapy and Athletic Training, College of Health and Rehabilitation Sciences: Sargent, Boston University, Boston, Massachusetts.
The authors declare no conflicts of interest.