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An experiment was conducted to study the effects of surface and vision on balance. The balance of subjects were observed for two different surfaces and for restricted and unrestricted vision. Balance was assessed qualitatively on an ordinal four-point scale based on observation by the experimenter. Forty subjects were studied, twenty males and twenty females ranging in age from 18 to 38, with heights given in cm and weights in kg. The subjects were tested while standing on foam or a normal surface and with their eyes closed or open or with a dome placed over their head. Each subject was tested twice in each of the surface and eye combinations for a total of 12 measures per subject.
A data frame with 480 observations on the following 8 variables.
an indicator
a factor
with levels female
male
in years
in cm
in kg
a factor with levels foam
norm
a factor with levels closed
dome
open
a four point scale measuring balance
Steele, R. (1998). Effect of surface and vision on balance. Ph. D. thesis, Depart- ment of Physiotherapy, University of Queensland.
OzDasl
data(ctsib) ## maybe str(ctsib) ; plot(ctsib) ...
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