Figure 2.

Time spent on the side of the box in which rats received noxious stimulation to paw on the side of muscle insult. In the inflammatory pain model, mice injected with carrageenan spent significantly less time on the side of the box where noxious stimulation was applied to the side of muscle insult (*, P<0.05). In the non-inflammatory muscle pain model (pH 4.0) and the exercise-enhanced pain model (pH 5.0 + exercise) there were no preferences in chamber. Data are mean ± S.E.M.