The article “The Effects of a Pneumatic Stool and a One- Legged Stool on Lower Limb Joint Load and Muscular Activity During Sitting and Rising” (Ergonomics, 1993: 519–535) gives the accompanying data on the effort required of a subject to arise from four different types of stools (Borg scale). Perform an analysis of variance using α = .05, and follow this with a multiple comparisons analysis if appropriate.
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