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The ergoStool
data frame has 36 rows and 3 columns.
This data frame contains the following columns:
a numeric vector giving the effort (Borg scale) required to arise from a stool.
a factor with levels
T1
,
T2
,
T3
, and
T4
giving the stool type.
an ordered factor giving a unique identifier for the subject in the experiment.
Devore (2000) cites data from an article in Ergometrics (1993, pp. 519-535) on ``The Effects of a Pneumatic Stool and a One-Legged Stool on Lower Limb Joint Load and Muscular Activity.''
fm1 <-
lme(effort ~ Type, data = ergoStool, random = ~ 1 | Subject)
anova( fm1 )
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