Factor analysis of the functional limitations test in healthy individuals.

The NeuroCom's Functional Limitations test evaluates motor performances on various dynamic movements but it is not known how the outcome variables among these movements might be related to each other. An exploratory factor analysis was conducted in healthy young individuals to identify the dimensions that contribute to the overall variance associated with the variables in the test items. Six factors comprising 18 out of 24 variables explained 76% of the overall variance. Variables from within a test item tended to be grouped in the same factor, suggesting that each item evaluates a particular set of motor skills that is required to execute the movement. The results suggest that all six items of the Functional Limitations test should to be used to estimate the overall functional motor control performance of an individual. The normative data gathered in this study using healthy individuals will allow us to compare individuals with movement limitations.

[1]  D. Winter,et al.  Unified theory regarding A/P and M/L balance in quiet stance. , 1996, Journal of neurophysiology.

[2]  R. Chong,et al.  Comparison of Muscle Functions during Three Contrasting Abdominal Exercises , 2006, Perceptual and motor skills.

[3]  Marie-H Monfils,et al.  In Search of the Motor Engram: Motor Map Plasticity as a Mechanism for Encoding Motor Experience , 2005, The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry.

[4]  S. Keele,et al.  Toward a Functional Analysis of the Basal Ganglia , 1998, Journal of Cognitive Neuroscience.

[5]  James F. Parker,et al.  Bioastronautics data book , 1972 .

[6]  S. Nadeau,et al.  Frontal and sagittal plane analyses of the stair climbing task in healthy adults aged over 40 years: what are the challenges compared to level walking? , 2003, Clinical biomechanics.

[7]  J. Ramalho-Santos,et al.  Cronbach's alpha: a tool for assessing the reliability of scales , 1999 .

[8]  Gregor Schöner,et al.  The uncontrolled manifold concept: identifying control variables for a functional task , 1999, Experimental Brain Research.

[9]  R. Chong,et al.  Initial evidence for the mixing and soft assembly of the ankle, suspensory, and hip muscle patterns , 2000, Experimental Brain Research.

[10]  S W Keele,et al.  Force control and its relation to timing. , 1987, Journal of motor behavior.

[11]  F. Plum.  Handbook of Physiology. , 1960 .

[12]  L. Nashner,et al.  The organization of human postural movements: A formal basis and experimental synthesis , 1985, Behavioral and Brain Sciences.

[13]  James F. Parker,et al.  Bioastronautics Data Book: Second Edition. NASA SP-3006. , 1973 .

[14]  J. Sheppard,et al.  Agility literature review: Classifications, training and testing , 2006, Journal of sports sciences.

[15]  Wim G. M. Janssen,et al.  Determinants of the sit-to-stand movement: a review. , 2002, Physical therapy.

[16]  D. Streiner.  Starting at the Beginning: An Introduction to Coefficient Alpha and Internal Consistency , 2003, Journal of personality assessment.